Collection: Screws - Thumb - Flat Key Head

Screws -> Thumb -> Flat Key Head
Thread Size (C) Thread Length (Tl) Overall Length (L) Head Diameter (D) Head Height (H) Indicative
Image
Thread Size (C)
1/4-20 UNC (6.35mm)

Thread Length (Tl)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L)
53.98
mm

(Equiv. 2.125 in.)
Head Diameter (D)
22.23
mm
Thumb Screws - 1/4-20 UNC - 6.35mm - 38.1x53.98 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064C-038-F-MI
Thumb Screws - 1/4-20 UNC - 6.35mm - 38.1x53.98 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $23.50 AUD
Regular price Sale price $23.50 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C) Thread Length (Tl) Overall Length (L) Indicative
Image
Thread Size (C)
1/4-20 UNC (6.35mm)

Thread Length (Tl)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L)
53.98
mm

(Equiv. 2.125 in.)
Thumb Screws - 1/4-20 UNC - 6.35mm - 38.1x53.98 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 22.23 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064C-038-F-MI
Thumb Screws - 1/4-20 UNC - 6.35mm - 38.1x53.98 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $23.50 AUD
Regular price Sale price $23.50 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 UNC (6.35mm)

Thread Length (Tl)
50.80
mm

(Equiv. 2 in.)
Overall Length (L)
66.68
mm

(Equiv. 2.625 in.)
Head Diameter (D)
20.64
mm
Head Height (H)
15.88
mm
Thumb Screws - 1/4-20 UNC - 6.35mm - 50.8x66.68 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Washer Face
Part Number: THS064C-051-F-CS-WF
Thumb Screws - 1/4-20 UNC - 6.35mm - 50.8x66.68 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $12.95 AUD
Regular price $15.55 AUD Sale price $12.95 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 UNC (6.35mm)

Thread Length (Tl)
50.80
mm

(Equiv. 2 in.)
Overall Length (L)
66.68
mm

(Equiv. 2.625 in.)
Thumb Screws - 1/4-20 UNC - 6.35mm - 50.8x66.68 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 20.64 mm    Head Height (H): 15.88 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Washer Face
Part Number: THS064C-051-F-CS-WF
Thumb Screws - 1/4-20 UNC - 6.35mm - 50.8x66.68 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $12.95 AUD
Regular price $15.55 AUD Sale price $12.95 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 UNC (6.35mm)

Thread Length (Tl)
50.80
mm

(Equiv. 2 in.)
Overall Length (L)
66.68
mm

(Equiv. 2.625 in.)
Head Diameter (D)
22.23
mm
Thumb Screws - 1/4-20 UNC - 6.35mm - 50.8x66.68 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064C-051-F-MI
Thumb Screws - 1/4-20 UNC - 6.35mm - 50.8x66.68 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $21.14 AUD
Regular price Sale price $21.14 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 UNC (6.35mm)

Thread Length (Tl)
50.80
mm

(Equiv. 2 in.)
Overall Length (L)
66.68
mm

(Equiv. 2.625 in.)
Thumb Screws - 1/4-20 UNC - 6.35mm - 50.8x66.68 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 22.23 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064C-051-F-MI
Thumb Screws - 1/4-20 UNC - 6.35mm - 50.8x66.68 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $21.14 AUD
Regular price Sale price $21.14 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 BSW (6.35mm)

Thread Length (Tl)
12.70
mm

(Equiv. 0.5 in.)
Thumb Screws - 1/4-20 BSW - 6.35mm - 12.7  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064W-013-F-CS (200 Pcs)
Thumb Screws - 1/4-20 BSW - 6.35mm - 12.7 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $149.05 AUD
Regular price $178.85 AUD Sale price $149.05 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 BSW (6.35mm)

Thread Length (Tl)
12.70
mm

(Equiv. 0.5 in.)
Thumb Screws - 1/4-20 BSW - 6.35mm - 12.7  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064W-013-F-CS (200 Pcs)
Thumb Screws - 1/4-20 BSW - 6.35mm - 12.7 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $149.05 AUD
Regular price $178.85 AUD Sale price $149.05 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 BSW (6.35mm)

Thread Length (Tl)
19.10
mm

(Equiv. 0.752 in.)
Thumb Screws - 1/4-20 BSW - 6.35mm - 19.1  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064W-019-F-CS (200 Pcs)
Thumb Screws - 1/4-20 BSW - 6.35mm - 19.1 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $153.50 AUD
Regular price $184.20 AUD Sale price $153.50 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 BSW (6.35mm)

Thread Length (Tl)
19.10
mm

(Equiv. 0.752 in.)
Thumb Screws - 1/4-20 BSW - 6.35mm - 19.1  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064W-019-F-CS (200 Pcs)
Thumb Screws - 1/4-20 BSW - 6.35mm - 19.1 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $153.50 AUD
Regular price $184.20 AUD Sale price $153.50 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 BSW (6.35mm)

Thread Length (Tl)
25.40
mm

(Equiv. 1 in.)
Thumb Screws - 1/4-20 BSW - 6.35mm - 25.4  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064W-025-F-CS (10 Pcs)
Thumb Screws - 1/4-20 BSW - 6.35mm - 25.4 - - Flat Key Head - Steel Screw
20 units (200 pcs) Available Now | Item Discontinued - Up to 20 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $3.56 AUD
Regular price $12.66 AUD Sale price $3.56 AUD
Excludes GST and overseas Taxes & Duties
Per 10
Quantity Required

20 units (200 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Thread Size (C)
1/4-20 BSW (6.35mm)

Thread Length (Tl)
25.40
mm

(Equiv. 1 in.)
Thumb Screws - 1/4-20 BSW - 6.35mm - 25.4  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064W-025-F-CS (10 Pcs)
Thumb Screws - 1/4-20 BSW - 6.35mm - 25.4 - - Flat Key Head - Steel Screw
20 units (200 pcs) Available Now | Item Discontinued - Up to 20 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $3.56 AUD
Regular price $12.66 AUD Sale price $3.56 AUD
Excludes GST and overseas Taxes & Duties
Per 10
Quantity Required

20 units (200 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Thread Size (C)
1/4-20 BSW (6.35mm)

Thread Length (Tl)
31.80
mm

(Equiv. 1.252 in.)
Thumb Screws - 1/4-20 BSW - 6.35mm - 31.8  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064W-032-F-CS (200 Pcs)
Thumb Screws - 1/4-20 BSW - 6.35mm - 31.8 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $169.77 AUD
Regular price $203.73 AUD Sale price $169.77 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 BSW (6.35mm)

Thread Length (Tl)
31.80
mm

(Equiv. 1.252 in.)
Thumb Screws - 1/4-20 BSW - 6.35mm - 31.8  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064W-032-F-CS (200 Pcs)
Thumb Screws - 1/4-20 BSW - 6.35mm - 31.8 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $169.77 AUD
Regular price $203.73 AUD Sale price $169.77 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 BSW (6.35mm)

Thread Length (Tl)
38.10
mm

(Equiv. 1.5 in.)
Thumb Screws - 1/4-20 BSW - 6.35mm - 38.1  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064W-038-F-CS (200 Pcs)
Thumb Screws - 1/4-20 BSW - 6.35mm - 38.1 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $178.32 AUD
Regular price $213.98 AUD Sale price $178.32 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
1/4-20 BSW (6.35mm)

Thread Length (Tl)
38.10
mm

(Equiv. 1.5 in.)
Thumb Screws - 1/4-20 BSW - 6.35mm - 38.1  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS064W-038-F-CS (200 Pcs)
Thumb Screws - 1/4-20 BSW - 6.35mm - 38.1 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $178.32 AUD
Regular price $213.98 AUD Sale price $178.32 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
12.70
mm

(Equiv. 0.5 in.)
Overall Length (L)
30.16
mm

(Equiv. 1.187 in.)
Head Diameter (D)
25.40
mm
Thumb Screws - 5/16-18 UNC - 7.94mm - 12.7x30.16 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-013-FL-MI (100 Pcs)
Thumb Screws - 5/16-18 UNC - 7.94mm - 12.7x30.16 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $1,187.86 AUD
Regular price Sale price $1,187.86 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
12.70
mm

(Equiv. 0.5 in.)
Overall Length (L)
30.16
mm

(Equiv. 1.187 in.)
Thumb Screws - 5/16-18 UNC - 7.94mm - 12.7x30.16 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 25.40 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-013-FL-MI (100 Pcs)
Thumb Screws - 5/16-18 UNC - 7.94mm - 12.7x30.16 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $1,187.86 AUD
Regular price Sale price $1,187.86 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
19.05
mm

(Equiv. 0.75 in.)
Overall Length (L)
36.51
mm

(Equiv. 1.437 in.)
Head Diameter (D)
25.40
mm
Thumb Screws - 5/16-18 UNC - 7.94mm - 19.05x36.51 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-019-F-MI (100 Pcs)
Thumb Screws - 5/16-18 UNC - 7.94mm - 19.05x36.51 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $1,116.86 AUD
Regular price Sale price $1,116.86 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
19.05
mm

(Equiv. 0.75 in.)
Overall Length (L)
36.51
mm

(Equiv. 1.437 in.)
Thumb Screws - 5/16-18 UNC - 7.94mm - 19.05x36.51 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 25.40 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-019-F-MI (100 Pcs)
Thumb Screws - 5/16-18 UNC - 7.94mm - 19.05x36.51 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $1,116.86 AUD
Regular price Sale price $1,116.86 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
19.05
mm

(Equiv. 0.75 in.)
Overall Length (L)
39.69
mm

(Equiv. 1.563 in.)
Head Diameter (D)
25.40
mm
Head Height (H)
20.64
mm
Thumb Screws - 5/16-18 UNC - 7.94mm - 19.05x39.69 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Washer Face
Part Number: THS079C-019-F-CS-WF
Thumb Screws - 5/16-18 UNC - 7.94mm - 19.05x39.69 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $17.86 AUD
Regular price $21.44 AUD Sale price $17.86 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
19.05
mm

(Equiv. 0.75 in.)
Overall Length (L)
39.69
mm

(Equiv. 1.563 in.)
Thumb Screws - 5/16-18 UNC - 7.94mm - 19.05x39.69 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 25.40 mm    Head Height (H): 20.64 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Washer Face
Part Number: THS079C-019-F-CS-WF
Thumb Screws - 5/16-18 UNC - 7.94mm - 19.05x39.69 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $17.86 AUD
Regular price $21.44 AUD Sale price $17.86 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 BSW (7.94mm)

Thread Length (Tl)
19.05
mm

(Equiv. 0.75 in.)
Thumb Screws - 5/16-18 BSW - 7.94mm - 19.05  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079W-019-F-CS (200 Pcs)
Thumb Screws - 5/16-18 BSW - 7.94mm - 19.05 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $223.86 AUD
Regular price $268.64 AUD Sale price $223.86 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 BSW (7.94mm)

Thread Length (Tl)
19.05
mm

(Equiv. 0.75 in.)
Thumb Screws - 5/16-18 BSW - 7.94mm - 19.05  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079W-019-F-CS (200 Pcs)
Thumb Screws - 5/16-18 BSW - 7.94mm - 19.05 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $223.86 AUD
Regular price $268.64 AUD Sale price $223.86 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 BSW (7.94mm)

Thread Length (Tl)
25.40
mm

(Equiv. 1 in.)
Thumb Screws - 5/16-18 BSW - 7.94mm - 25.4  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079W-025-F-CS (200 Pcs)
Thumb Screws - 5/16-18 BSW - 7.94mm - 25.4 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $253.14 AUD
Regular price $303.76 AUD Sale price $253.14 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 BSW (7.94mm)

Thread Length (Tl)
25.40
mm

(Equiv. 1 in.)
Thumb Screws - 5/16-18 BSW - 7.94mm - 25.4  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079W-025-F-CS (200 Pcs)
Thumb Screws - 5/16-18 BSW - 7.94mm - 25.4 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $253.14 AUD
Regular price $303.76 AUD Sale price $253.14 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
25.40
mm

(Equiv. 1 in.)
Overall Length (L)
42.86
mm

(Equiv. 1.687 in.)
Head Diameter (D)
25.40
mm
Thumb Screws - 5/16-18 UNC - 7.94mm - 25.4x42.86 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-025-F-MI
Thumb Screws - 5/16-18 UNC - 7.94mm - 25.4x42.86 mm Flat Key Head - Malleable Iron Screw
8 Available Now | Item Discontinued - Up to 8 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $7.68 AUD
Regular price $16.65 AUD Sale price $7.68 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

8 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
25.40
mm

(Equiv. 1 in.)
Overall Length (L)
42.86
mm

(Equiv. 1.687 in.)
Thumb Screws - 5/16-18 UNC - 7.94mm - 25.4x42.86 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 25.40 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-025-F-MI
Thumb Screws - 5/16-18 UNC - 7.94mm - 25.4x42.86 mm Flat Key Head - Malleable Iron Screw
8 Available Now | Item Discontinued - Up to 8 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $7.68 AUD
Regular price $16.65 AUD Sale price $7.68 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

8 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
31.75
mm

(Equiv. 1.25 in.)
Overall Length (L)
49.21
mm

(Equiv. 1.937 in.)
Head Diameter (D)
25.40
mm
Thumb Screws - 5/16-18 UNC - 7.94mm - 31.75x49.21 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-032-F-MI
Thumb Screws - 5/16-18 UNC - 7.94mm - 31.75x49.21 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $21.50 AUD
Regular price Sale price $21.50 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
31.75
mm

(Equiv. 1.25 in.)
Overall Length (L)
49.21
mm

(Equiv. 1.937 in.)
Thumb Screws - 5/16-18 UNC - 7.94mm - 31.75x49.21 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 25.40 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-032-F-MI
Thumb Screws - 5/16-18 UNC - 7.94mm - 31.75x49.21 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $21.50 AUD
Regular price Sale price $21.50 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 BSW (7.94mm)

Thread Length (Tl)
31.80
mm

(Equiv. 1.252 in.)
Thumb Screws - 5/16-18 BSW - 7.94mm - 31.8  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079W-032-F-CS (200 Pcs)
Thumb Screws - 5/16-18 BSW - 7.94mm - 31.8 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $266.05 AUD
Regular price $319.25 AUD Sale price $266.05 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 BSW (7.94mm)

Thread Length (Tl)
31.80
mm

(Equiv. 1.252 in.)
Thumb Screws - 5/16-18 BSW - 7.94mm - 31.8  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079W-032-F-CS (200 Pcs)
Thumb Screws - 5/16-18 BSW - 7.94mm - 31.8 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $266.05 AUD
Regular price $319.25 AUD Sale price $266.05 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 BSW (7.94mm)

Thread Length (Tl)
38.10
mm

(Equiv. 1.5 in.)
Thumb Screws - 5/16-18 BSW - 7.94mm - 38.1  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079W-038-F-CS (200 Pcs)
Thumb Screws - 5/16-18 BSW - 7.94mm - 38.1 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $280.32 AUD
Regular price $336.38 AUD Sale price $280.32 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 BSW (7.94mm)

Thread Length (Tl)
38.10
mm

(Equiv. 1.5 in.)
Thumb Screws - 5/16-18 BSW - 7.94mm - 38.1  Flat Key Head - Steel
Material: Steel    Finish: Zinc Plated   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079W-038-F-CS (200 Pcs)
Thumb Screws - 5/16-18 BSW - 7.94mm - 38.1 - - Flat Key Head - Steel Screw
Out of Stock | Backorder Now | Orders can be expected around Fri, Nov 07, 2025
Regular price $280.32 AUD
Regular price $336.38 AUD Sale price $280.32 AUD
Excludes GST and overseas Taxes & Duties
Per 200
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L)
55.56
mm

(Equiv. 2.187 in.)
Head Diameter (D)
25.40
mm
Thumb Screws - 5/16-18 UNC - 7.94mm - 38.1x55.56 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-038-F-MI
Thumb Screws - 5/16-18 UNC - 7.94mm - 38.1x55.56 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $21.50 AUD
Regular price Sale price $21.50 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L)
55.56
mm

(Equiv. 2.187 in.)
Thumb Screws - 5/16-18 UNC - 7.94mm - 38.1x55.56 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 25.40 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-038-F-MI
Thumb Screws - 5/16-18 UNC - 7.94mm - 38.1x55.56 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $21.50 AUD
Regular price Sale price $21.50 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L)
58.74
mm

(Equiv. 2.313 in.)
Head Diameter (D)
25.40
mm
Head Height (H)
20.64
mm
Thumb Screws - 5/16-18 UNC - 7.94mm - 38.1x58.74 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Washer Face
Part Number: THS079C-038-F-CS-WF (100 Pcs)
Thumb Screws - 5/16-18 UNC - 7.94mm - 38.1x58.74 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $1,287.23 AUD
Regular price Sale price $1,287.23 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L)
58.74
mm

(Equiv. 2.313 in.)
Thumb Screws - 5/16-18 UNC - 7.94mm - 38.1x58.74 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 25.40 mm    Head Height (H): 20.64 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Washer Face
Part Number: THS079C-038-F-CS-WF (100 Pcs)
Thumb Screws - 5/16-18 UNC - 7.94mm - 38.1x58.74 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $1,287.23 AUD
Regular price Sale price $1,287.23 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
50.80
mm

(Equiv. 2 in.)
Overall Length (L)
68.26
mm

(Equiv. 2.687 in.)
Head Diameter (D)
25.40
mm
Thumb Screws - 5/16-18 UNC - 7.94mm - 50.8x68.26 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-051-F-MI (100 Pcs)
Thumb Screws - 5/16-18 UNC - 7.94mm - 50.8x68.26 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $1,214.77 AUD
Regular price Sale price $1,214.77 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
5/16-18 UNC (7.94mm)

Thread Length (Tl)
50.80
mm

(Equiv. 2 in.)
Overall Length (L)
68.26
mm

(Equiv. 2.687 in.)
Thumb Screws - 5/16-18 UNC - 7.94mm - 50.8x68.26 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 25.40 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS079C-051-F-MI (100 Pcs)
Thumb Screws - 5/16-18 UNC - 7.94mm - 50.8x68.26 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $1,214.77 AUD
Regular price Sale price $1,214.77 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
3/8-16 UNC (9.53mm)

Thread Length (Tl)
12.70
mm

(Equiv. 0.5 in.)
Overall Length (L)
34.93
mm

(Equiv. 1.375 in.)
Head Diameter (D)
31.75
mm
Head Height (H)
22.23
mm
Thumb Screws - 3/8-16 UNC - 9.53mm - 12.7x34.93 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Washer Face
Part Number: THS095C-013-F-CS-WF (100 Pcs)
Thumb Screws - 3/8-16 UNC - 9.53mm - 12.7x34.93 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $1,543.68 AUD
Regular price Sale price $1,543.68 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
3/8-16 UNC (9.53mm)

Thread Length (Tl)
12.70
mm

(Equiv. 0.5 in.)
Overall Length (L)
34.93
mm

(Equiv. 1.375 in.)
Thumb Screws - 3/8-16 UNC - 9.53mm - 12.7x34.93 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 31.75 mm    Head Height (H): 22.23 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Washer Face
Part Number: THS095C-013-F-CS-WF (100 Pcs)
Thumb Screws - 3/8-16 UNC - 9.53mm - 12.7x34.93 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $1,543.68 AUD
Regular price Sale price $1,543.68 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
3/8-16 UNC (9.53mm)

Thread Length (Tl)
19.05
mm

(Equiv. 0.75 in.)
Overall Length (L)
38.10
mm

(Equiv. 1.5 in.)
Head Diameter (D)
26.99
mm
Thumb Screws - 3/8-16 UNC - 9.53mm - 19.05x38.1 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS095C-019-F-MI
Thumb Screws - 3/8-16 UNC - 9.53mm - 19.05x38.1 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $25.23 AUD
Regular price Sale price $25.23 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
3/8-16 UNC (9.53mm)

Thread Length (Tl)
19.05
mm

(Equiv. 0.75 in.)
Overall Length (L)
38.10
mm

(Equiv. 1.5 in.)
Thumb Screws - 3/8-16 UNC - 9.53mm - 19.05x38.1 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 26.99 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS095C-019-F-MI
Thumb Screws - 3/8-16 UNC - 9.53mm - 19.05x38.1 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $25.23 AUD
Regular price Sale price $25.23 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
3/8-16 UNC (9.53mm)

Thread Length (Tl)
25.40
mm

(Equiv. 1 in.)
Overall Length (L)
44.45
mm

(Equiv. 1.75 in.)
Head Diameter (D)
26.99
mm
Thumb Screws - 3/8-16 UNC - 9.53mm - 25.4x44.45 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS095C-025-F-MI
Thumb Screws - 3/8-16 UNC - 9.53mm - 25.4x44.45 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $25.59 AUD
Regular price Sale price $25.59 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
3/8-16 UNC (9.53mm)

Thread Length (Tl)
25.40
mm

(Equiv. 1 in.)
Overall Length (L)
44.45
mm

(Equiv. 1.75 in.)
Thumb Screws - 3/8-16 UNC - 9.53mm - 25.4x44.45 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 26.99 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Standard
Part Number: THS095C-025-F-MI
Thumb Screws - 3/8-16 UNC - 9.53mm - 25.4x44.45 mm Flat Key Head - Malleable Iron Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Sep 30, 2025
Regular price $25.59 AUD
Regular price Sale price $25.59 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
Thread Size (C)
3/8-16 UNC (9.53mm)

Thread Length (Tl)
25.40
mm

(Equiv. 1 in.)
Overall Length (L)
47.63
mm

(Equiv. 1.875 in.)
Head Diameter (D)
31.75
mm
Head Height (H)
22.23
mm
Thumb Screws - 3/8-16 UNC - 9.53mm - 25.4x47.63 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Washer Face
Part Number: THS095C-025-F-CS-WF
Thumb Screws - 3/8-16 UNC - 9.53mm - 25.4x47.63 mm Flat Key Head - Malleable Iron Screw
10 Available Now | Further orders can be expected around Tue, Sep 30, 2025
Regular price $13.50 AUD
Regular price $16.20 AUD Sale price $13.50 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Thread Size (C)
3/8-16 UNC (9.53mm)

Thread Length (Tl)
25.40
mm

(Equiv. 1 in.)
Overall Length (L)
47.63
mm

(Equiv. 1.875 in.)
Thumb Screws - 3/8-16 UNC - 9.53mm - 25.4x47.63 mm Flat Key Head - Malleable Iron
Material: Malleable Iron    Head Diameter (D): 31.75 mm    Head Height (H): 22.23 mm    Finish: Tumbled   
Category: Screws - Thumb - Flat Key Head - Washer Face
Part Number: THS095C-025-F-CS-WF
Thumb Screws - 3/8-16 UNC - 9.53mm - 25.4x47.63 mm Flat Key Head - Malleable Iron Screw
10 Available Now | Further orders can be expected around Tue, Sep 30, 2025
Regular price $13.50 AUD
Regular price $16.20 AUD Sale price $13.50 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

10 Available Now. Backorder if more than 10.