Inserts - Expansion - Press In - 303 Stainless - Flanged

Inserts -> Expansion -> Press In -> 303 Stainless -> Flanged

There are 6 products in the sub-categories of Inserts - Expansion - Press In - 303 Stainless - Flanged. Browse the Inserts - Expansion - Press In - 303 Stainless - Flanged products table.

Category Details

A selection of Flanged 303 Stainless Press In Expansion Inserts. Use for cored or drilled holes in plastics. Designed to replace molded in inserts and threads in plastic casings. Also known as threaded inserts.

  • Material : 303 Stainless Steel
  • Easiest inserts to install - simply push into a pre-moulded hole.
  • Used with plastics or other materials. Material must be strong enough to withstand the expansion of the insert.
  • The insertion of the screw locks the external knurls into the wall of the hole.
  • Provides excellent thread durability but where maximum strength is required other inserts shown in this catalogue should be preferred.

Miniature Bearings Australia - MBA Minibearings

Additional resources:


A more concise listing may be found in the Inserts - Expansion - Press In - 303 Stainless - Flanged category on the Small Parts & Bearings online store.
Internal Thread Rec. Hole Diameter Length (L) Recommended Hole Diameter (A) Knurled OD (B) Indicative
Image
Internal Thread
2-56 UNC (2.18mm)

Rec. Hole Diameter
3.175
mm

(Equiv. 0.125 in.)
Length (L)
3.96
mm

(Equiv. 0.156 in.)
Knurled OD (B)
3.429
mm
Expansion Inserts - 2-56 UNC - 2.18mm - 3.175x3.96 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Flange OD (A): 4.750   
Part Number: IN-EP-022C-039-FS3 (2 Pcs)
Expansion Inserts - 2-56 UNC - 2.18mm - 3.175x3.96 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
10 units (20 pcs) Available Now | Further orders can be expected around Mon, Sep 29, 2025
$5.86 AUD
$7.04 AUD $5.86 AUD
Excludes GST and overseas Taxes & Duties
Per 2
Quantity Required

10 units (20 pcs) Available Now. Backorder if more than 10.
Internal Thread Rec. Hole Diameter Length (L) Recommended Hole Diameter (A) Indicative
Image
Internal Thread
2-56 UNC (2.18mm)

Rec. Hole Diameter
3.175
mm

(Equiv. 0.125 in.)
Length (L)
3.96
mm

(Equiv. 0.156 in.)
Expansion Inserts - 2-56 UNC - 2.18mm - 3.175x3.96 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Knurled OD (B): 3.429 mm    Flange OD (A): 4.750   
Part Number: IN-EP-022C-039-FS3 (2 Pcs)
Expansion Inserts - 2-56 UNC - 2.18mm - 3.175x3.96 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
10 units (20 pcs) Available Now | Further orders can be expected around Mon, Sep 29, 2025
$5.86 AUD
$7.04 AUD $5.86 AUD
Excludes GST and overseas Taxes & Duties
Per 2
Quantity Required

10 units (20 pcs) Available Now. Backorder if more than 10.
Internal Thread
4-40 UNC (2.85mm)

Rec. Hole Diameter
3.962
mm

(Equiv. 0.156 in.)
Length (L)
4.78
mm

(Equiv. 0.188 in.)
Knurled OD (B)
4.216
mm
Expansion Inserts - 4-40 UNC - 2.85mm - 3.962x4.78 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Flange OD (A): 5.537   
Part Number: IN-EP-029C-048-FS3
Expansion Inserts - 4-40 UNC - 2.85mm - 3.962x4.78 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
10 Available Now | Further orders can be expected around Mon, Sep 29, 2025
$5.68 AUD
$5.68 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Internal Thread
4-40 UNC (2.85mm)

Rec. Hole Diameter
3.962
mm

(Equiv. 0.156 in.)
Length (L)
4.78
mm

(Equiv. 0.188 in.)
Expansion Inserts - 4-40 UNC - 2.85mm - 3.962x4.78 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Knurled OD (B): 4.216 mm    Flange OD (A): 5.537   
Part Number: IN-EP-029C-048-FS3
Expansion Inserts - 4-40 UNC - 2.85mm - 3.962x4.78 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
10 Available Now | Further orders can be expected around Mon, Sep 29, 2025
$5.68 AUD
$5.68 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Internal Thread
6-32 UNC (3.5mm)

Rec. Hole Diameter
4.750
mm

(Equiv. 0.187 in.)
Length (L)
6.35
mm

(Equiv. 0.25 in.)
Knurled OD (B)
5.055
mm
Expansion Inserts - 6-32 UNC - 3.5mm - 4.75x6.35 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Flange OD (A): 6.325   
Part Number: IN-EP-035C-064-FS3
Expansion Inserts - 6-32 UNC - 3.5mm - 4.75x6.35 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
10 Available Now | Further orders can be expected around Mon, Sep 29, 2025
$5.32 AUD
$5.32 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Internal Thread
6-32 UNC (3.5mm)

Rec. Hole Diameter
4.750
mm

(Equiv. 0.187 in.)
Length (L)
6.35
mm

(Equiv. 0.25 in.)
Expansion Inserts - 6-32 UNC - 3.5mm - 4.75x6.35 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Knurled OD (B): 5.055 mm    Flange OD (A): 6.325   
Part Number: IN-EP-035C-064-FS3
Expansion Inserts - 6-32 UNC - 3.5mm - 4.75x6.35 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
10 Available Now | Further orders can be expected around Mon, Sep 29, 2025
$5.32 AUD
$5.32 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Internal Thread
8-32 UNC (4.17mm)

Rec. Hole Diameter
5.537
mm

(Equiv. 0.218 in.)
Length (L)
7.95
mm

(Equiv. 0.313 in.)
Knurled OD (B)
5.842
mm
Expansion Inserts - 8-32 UNC - 4.17mm - 5.537x7.95 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Flange OD (A): 7.112   
Part Number: IN-EP-042C-079-FS3
Expansion Inserts - 8-32 UNC - 4.17mm - 5.537x7.95 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
10 Available Now | Further orders can be expected around Mon, Sep 29, 2025
$8.59 AUD
$8.59 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Internal Thread
8-32 UNC (4.17mm)

Rec. Hole Diameter
5.537
mm

(Equiv. 0.218 in.)
Length (L)
7.95
mm

(Equiv. 0.313 in.)
Expansion Inserts - 8-32 UNC - 4.17mm - 5.537x7.95 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Knurled OD (B): 5.842 mm    Flange OD (A): 7.112   
Part Number: IN-EP-042C-079-FS3
Expansion Inserts - 8-32 UNC - 4.17mm - 5.537x7.95 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
10 Available Now | Further orders can be expected around Mon, Sep 29, 2025
$8.59 AUD
$8.59 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Internal Thread
10-32 UNF (4.76mm)

Rec. Hole Diameter
6.350
mm

(Equiv. 0.25 in.)
Length (L)
9.53
mm

(Equiv. 0.375 in.)
Knurled OD (B)
6.655
mm
Expansion Inserts - 10-32 UNF - 4.76mm - 6.35x9.53 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Flange OD (A): 7.925   
Part Number: IN-EP-048F-095-FS3
Expansion Inserts - 10-32 UNF - 4.76mm - 6.35x9.53 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
10 Available Now | Further orders can be expected around Mon, Sep 29, 2025
$4.77 AUD
$5.73 AUD $4.77 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Internal Thread
10-32 UNF (4.76mm)

Rec. Hole Diameter
6.350
mm

(Equiv. 0.25 in.)
Length (L)
9.53
mm

(Equiv. 0.375 in.)
Expansion Inserts - 10-32 UNF - 4.76mm - 6.35x9.53 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Knurled OD (B): 6.655 mm    Flange OD (A): 7.925   
Part Number: IN-EP-048F-095-FS3
Expansion Inserts - 10-32 UNF - 4.76mm - 6.35x9.53 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
10 Available Now | Further orders can be expected around Mon, Sep 29, 2025
$4.77 AUD
$5.73 AUD $4.77 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Internal Thread
1/4-20 UNC (6.35mm)

Rec. Hole Diameter
7.938
mm

(Equiv. 0.313 in.)
Length (L)
12.70
mm

(Equiv. 0.5 in.)
Knurled OD (B)
8.280
mm
Expansion Inserts - 1/4-20 UNC - 6.35mm - 7.938x12.7 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Flange OD (A): 9.525   
Part Number: IN-EP-064C-127-FS3
Expansion Inserts - 1/4-20 UNC - 6.35mm - 7.938x12.7 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Out of Stock | Backorder Now | Orders can be expected around Wed, Oct 15, 2025
$10.68 AUD
$12.82 AUD $10.68 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

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

Rec. Hole Diameter
7.938
mm

(Equiv. 0.313 in.)
Length (L)
12.70
mm

(Equiv. 0.5 in.)
Expansion Inserts - 1/4-20 UNC - 6.35mm - 7.938x12.7 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Knurled OD (B): 8.280 mm    Flange OD (A): 9.525   
Part Number: IN-EP-064C-127-FS3
Expansion Inserts - 1/4-20 UNC - 6.35mm - 7.938x12.7 mm Press In - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Out of Stock | Backorder Now | Orders can be expected around Wed, Oct 15, 2025
$10.68 AUD
$12.82 AUD $10.68 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.