Collection: Washers - Flat - Commercial - Hardened Steel

Washers -> Flat -> Commercial -> Hardened Steel

There are 12 products in the sub-categories of Washers - Flat - Commercial - Hardened Steel. Browse the Washers - Flat - Commercial - Hardened Steel products table.

Category Details

A selection of Hardened Steel Commercial Flat Washers. Medium carbon steel through hardened to RC 43-49. Zinc dichromate finish. All dimensions shows are minimum.

  • Flat washers are available in many different materials, and can be used for spacing and shimming nuts and bolts, bearing shaft and all types of mechanical applications. An expanded range may be available on special order. Please enquire.
  • Flat plain washers distrubute the load of screws and other fasteners, which prevents the fastener from indenting the material being fastened. Commercial washers have wide tolerances, whilst precision washers have precise tolerances.
  • Washers also increase the surface area, reducing the risk of loosening. Note that the Nominal ID is the shaft, bolt or screw size that the washer is designed to fit over. The washer ID will have clearance on that size. See tolerances and standards listed.

Miniature Bearings Australia - MBA Minibearings

Additional resources:


A more concise listing may be found in the Washers - Flat - Commercial - Hardened Steel category on the Small Parts & Bearings online store.
Nominal Inside Diameter (d) Nominal Outside Diameter (D) Thickness (T) Other Indicative
Image
Nominal Inside Diameter (d)
6.35
mm
ASME / ANSI B18.22.1
(Equiv. 0.25 in.)
Nominal Outside Diameter (D)
15.74
mm
ASME / ANSI B18.22.1
(Equiv. 0.62 in.)
Thickness (T)
2.29
mm
ASME / ANSI B18.22.1
(Equiv. 0.09 in.)
Flat Washers - 6.35x15.74x2.29 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 7.01 mm   
Part Number: W0064-F-016-023-HS
Flat Washers - 6.35x15.74x2.29 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $1.41 AUD
Regular price Sale price $1.41 AUD
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Nominal Inside Diameter (d) Nominal Outside Diameter (D) Thickness (T) Other Indicative
Image
Nominal Inside Diameter (d)
6.35
mm
ASME / ANSI B18.22.1
(Equiv. 0.25 in.)
Nominal Outside Diameter (D)
15.74
mm
ASME / ANSI B18.22.1
(Equiv. 0.62 in.)
Thickness (T)
2.29
mm
ASME / ANSI B18.22.1
(Equiv. 0.09 in.)
Flat Washers - 6.35x15.74x2.29 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 7.01 mm   
Part Number: W0064-F-016-023-HS
Flat Washers - 6.35x15.74x2.29 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $1.41 AUD
Regular price Sale price $1.41 AUD
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Nominal Inside Diameter (d)
7.94
mm
ASME / ANSI B18.22.1
(Equiv. 0.313 in.)
Nominal Outside Diameter (D)
17.29
mm
ASME / ANSI B18.22.1
(Equiv. 0.681 in.)
Thickness (T)
2.29
mm
ASME / ANSI B18.22.1
(Equiv. 0.09 in.)
Flat Washers - 7.94x17.29x2.29 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 8.61 mm   
Part Number: W0079-F-017-023-HS
Flat Washers - 7.94x17.29x2.29 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $1.77 AUD
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Nominal Inside Diameter (d)
7.94
mm
ASME / ANSI B18.22.1
(Equiv. 0.313 in.)
Nominal Outside Diameter (D)
17.29
mm
ASME / ANSI B18.22.1
(Equiv. 0.681 in.)
Thickness (T)
2.29
mm
ASME / ANSI B18.22.1
(Equiv. 0.09 in.)
Flat Washers - 7.94x17.29x2.29 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 8.61 mm   
Part Number: W0079-F-017-023-HS
Flat Washers - 7.94x17.29x2.29 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $1.77 AUD
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Nominal Inside Diameter (d)
9.53
mm
ASME / ANSI B18.22.1
(Equiv. 0.375 in.)
Nominal Outside Diameter (D)
20.44
mm
ASME / ANSI B18.22.1
(Equiv. 0.805 in.)
Thickness (T)
2.79
mm
ASME / ANSI B18.22.1
(Equiv. 0.11 in.)
Flat Washers - 9.53x20.44x2.79 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 10.18 mm   
Part Number: W0095-F-020-028-HS
Flat Washers - 9.53x20.44x2.79 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $2.23 AUD
Regular price Sale price $2.23 AUD
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Nominal Inside Diameter (d)
9.53
mm
ASME / ANSI B18.22.1
(Equiv. 0.375 in.)
Nominal Outside Diameter (D)
20.44
mm
ASME / ANSI B18.22.1
(Equiv. 0.805 in.)
Thickness (T)
2.79
mm
ASME / ANSI B18.22.1
(Equiv. 0.11 in.)
Flat Washers - 9.53x20.44x2.79 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 10.18 mm   
Part Number: W0095-F-020-028-HS
Flat Washers - 9.53x20.44x2.79 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $2.23 AUD
Regular price Sale price $2.23 AUD
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Nominal Inside Diameter (d)
11.11
mm
ASME / ANSI B18.22.1
(Equiv. 0.437 in.)
Nominal Outside Diameter (D)
23.24
mm
ASME / ANSI B18.22.1
(Equiv. 0.915 in.)
Thickness (T)
2.79
mm
ASME / ANSI B18.22.1
(Equiv. 0.11 in.)
Flat Washers - 11.11x23.24x2.79 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 11.78 mm   
Part Number: W0111-F-023-028-HS
Flat Washers - 11.11x23.24x2.79 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $2.50 AUD
Regular price Sale price $2.50 AUD
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Nominal Inside Diameter (d)
11.11
mm
ASME / ANSI B18.22.1
(Equiv. 0.437 in.)
Nominal Outside Diameter (D)
23.24
mm
ASME / ANSI B18.22.1
(Equiv. 0.915 in.)
Thickness (T)
2.79
mm
ASME / ANSI B18.22.1
(Equiv. 0.11 in.)
Flat Washers - 11.11x23.24x2.79 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 11.78 mm   
Part Number: W0111-F-023-028-HS
Flat Washers - 11.11x23.24x2.79 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $2.50 AUD
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Nominal Inside Diameter (d)
12.70
mm
ASME / ANSI B18.22.1
(Equiv. 0.5 in.)
Nominal Outside Diameter (D)
26.79
mm
ASME / ANSI B18.22.1
(Equiv. 1.055 in.)
Thickness (T)
4.83
mm
ASME / ANSI B18.22.1
(Equiv. 0.19 in.)
Flat Washers - 12.7x26.79x4.83 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 13.36 mm   
Part Number: W0127-F-027-048-HS
Flat Washers - 12.7x26.79x4.83 mm Commercial - Carbon Spring Steel Self Finish Washer
10 Available Now | Further orders can be expected around Sun, Sep 21, 2025
Regular price $3.05 AUD
Regular price $5.36 AUD Sale price $3.05 AUD
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Nominal Inside Diameter (d)
12.70
mm
ASME / ANSI B18.22.1
(Equiv. 0.5 in.)
Nominal Outside Diameter (D)
26.79
mm
ASME / ANSI B18.22.1
(Equiv. 1.055 in.)
Thickness (T)
4.83
mm
ASME / ANSI B18.22.1
(Equiv. 0.19 in.)
Flat Washers - 12.7x26.79x4.83 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 13.36 mm   
Part Number: W0127-F-027-048-HS
Flat Washers - 12.7x26.79x4.83 mm Commercial - Carbon Spring Steel Self Finish Washer
10 Available Now | Further orders can be expected around Sun, Sep 21, 2025
Regular price $3.05 AUD
Regular price $5.36 AUD Sale price $3.05 AUD
Each
Quantity Required

10 Available Now. Backorder if more than 10.
Nominal Inside Diameter (d)
14.30
mm
ASME / ANSI B18.22.1
(Equiv. 0.563 in.)
Nominal Outside Diameter (D)
29.48
mm
ASME / ANSI B18.22.1
(Equiv. 1.161 in.)
Thickness (T)
4.27
mm
ASME / ANSI B18.22.1
(Equiv. 0.168 in.)
Flat Washers - 14.3x29.48x4.27 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 14.96 mm   
Part Number: W0143-F-029-043-HS
Flat Washers - 14.3x29.48x4.27 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $8.86 AUD
Regular price Sale price $8.86 AUD
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Nominal Inside Diameter (d)
14.30
mm
ASME / ANSI B18.22.1
(Equiv. 0.563 in.)
Nominal Outside Diameter (D)
29.48
mm
ASME / ANSI B18.22.1
(Equiv. 1.161 in.)
Thickness (T)
4.27
mm
ASME / ANSI B18.22.1
(Equiv. 0.168 in.)
Flat Washers - 14.3x29.48x4.27 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 14.96 mm   
Part Number: W0143-F-029-043-HS
Flat Washers - 14.3x29.48x4.27 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $8.86 AUD
Regular price Sale price $8.86 AUD
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Nominal Inside Diameter (d)
15.88
mm
ASME / ANSI B18.22.1
(Equiv. 0.625 in.)
Nominal Outside Diameter (D)
33.14
mm
ASME / ANSI B18.22.1
(Equiv. 1.305 in.)
Thickness (T)
5.23
mm
ASME / ANSI B18.22.1
(Equiv. 0.206 in.)
Flat Washers - 15.88x33.14x5.23 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 16.48 mm   
Part Number: W0159-F-033-052-HS
Flat Washers - 15.88x33.14x5.23 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $11.77 AUD
Regular price Sale price $11.77 AUD
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Quantity Required

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Nominal Inside Diameter (d)
15.88
mm
ASME / ANSI B18.22.1
(Equiv. 0.625 in.)
Nominal Outside Diameter (D)
33.14
mm
ASME / ANSI B18.22.1
(Equiv. 1.305 in.)
Thickness (T)
5.23
mm
ASME / ANSI B18.22.1
(Equiv. 0.206 in.)
Flat Washers - 15.88x33.14x5.23 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 16.48 mm   
Part Number: W0159-F-033-052-HS
Flat Washers - 15.88x33.14x5.23 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $11.77 AUD
Regular price Sale price $11.77 AUD
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Nominal Inside Diameter (d)
19.05
mm
ASME / ANSI B18.22.1
(Equiv. 0.75 in.)
Nominal Outside Diameter (D)
36.93
mm
ASME / ANSI B18.22.1
(Equiv. 1.454 in.)
Thickness (T)
5.23
mm
ASME / ANSI B18.22.1
(Equiv. 0.206 in.)
Flat Washers - 19.05x36.93x5.23 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 20.52 mm   
Part Number: W0191-F-037-052-HS
Flat Washers - 19.05x36.93x5.23 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $15.95 AUD
Regular price Sale price $15.95 AUD
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Nominal Inside Diameter (d)
19.05
mm
ASME / ANSI B18.22.1
(Equiv. 0.75 in.)
Nominal Outside Diameter (D)
36.93
mm
ASME / ANSI B18.22.1
(Equiv. 1.454 in.)
Thickness (T)
5.23
mm
ASME / ANSI B18.22.1
(Equiv. 0.206 in.)
Flat Washers - 19.05x36.93x5.23 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 20.52 mm   
Part Number: W0191-F-037-052-HS
Flat Washers - 19.05x36.93x5.23 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $15.95 AUD
Regular price Sale price $15.95 AUD
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Quantity Required

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Nominal Inside Diameter (d)
22.23
mm
ASME / ANSI B18.22.1
(Equiv. 0.875 in.)
Nominal Outside Diameter (D)
44.27
mm
ASME / ANSI B18.22.1
(Equiv. 1.743 in.)
Thickness (T)
5.97
mm
ASME / ANSI B18.22.1
(Equiv. 0.235 in.)
Flat Washers - 22.23x44.27x5.97 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 23.64 mm   
Part Number: W0222-F-044-060-HS
Flat Washers - 22.23x44.27x5.97 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $18.05 AUD
Regular price Sale price $18.05 AUD
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Nominal Inside Diameter (d)
22.23
mm
ASME / ANSI B18.22.1
(Equiv. 0.875 in.)
Nominal Outside Diameter (D)
44.27
mm
ASME / ANSI B18.22.1
(Equiv. 1.743 in.)
Thickness (T)
5.97
mm
ASME / ANSI B18.22.1
(Equiv. 0.235 in.)
Flat Washers - 22.23x44.27x5.97 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 23.64 mm   
Part Number: W0222-F-044-060-HS
Flat Washers - 22.23x44.27x5.97 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $18.05 AUD
Regular price Sale price $18.05 AUD
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Nominal Inside Diameter (d)
25.40
mm
ASME / ANSI B18.22.1
(Equiv. 1 in.)
Nominal Outside Diameter (D)
50.62
mm
ASME / ANSI B18.22.1
(Equiv. 1.993 in.)
Thickness (T)
5.97
mm
ASME / ANSI B18.22.1
(Equiv. 0.235 in.)
Flat Washers - 25.4x50.62x5.97 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 26.79 mm   
Part Number: W0254-F-051-060-HS
Flat Washers - 25.4x50.62x5.97 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $24.32 AUD
Regular price Sale price $24.32 AUD
Each
Quantity Required

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Nominal Inside Diameter (d)
25.40
mm
ASME / ANSI B18.22.1
(Equiv. 1 in.)
Nominal Outside Diameter (D)
50.62
mm
ASME / ANSI B18.22.1
(Equiv. 1.993 in.)
Thickness (T)
5.97
mm
ASME / ANSI B18.22.1
(Equiv. 0.235 in.)
Flat Washers - 25.4x50.62x5.97 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 26.79 mm   
Part Number: W0254-F-051-060-HS
Flat Washers - 25.4x50.62x5.97 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $24.32 AUD
Regular price Sale price $24.32 AUD
Each
Quantity Required

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Nominal Inside Diameter (d)
31.80
mm
ASME / ANSI B18.22.1
(Equiv. 1.252 in.)
Nominal Outside Diameter (D)
62.67
mm
ASME / ANSI B18.22.1
(Equiv. 2.467 in.)
Thickness (T)
5.97
mm
ASME / ANSI B18.22.1
(Equiv. 0.235 in.)
Flat Washers - 31.8x62.67x5.97 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 34.54 mm   
Part Number: W0318-F-063-060-HS
Flat Washers - 31.8x62.67x5.97 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $32.95 AUD
Regular price Sale price $32.95 AUD
Each
Quantity Required

Backorder: Out of Stock.
Nominal Inside Diameter (d)
31.80
mm
ASME / ANSI B18.22.1
(Equiv. 1.252 in.)
Nominal Outside Diameter (D)
62.67
mm
ASME / ANSI B18.22.1
(Equiv. 2.467 in.)
Thickness (T)
5.97
mm
ASME / ANSI B18.22.1
(Equiv. 0.235 in.)
Flat Washers - 31.8x62.67x5.97 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 34.54 mm   
Part Number: W0318-F-063-060-HS
Flat Washers - 31.8x62.67x5.97 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $32.95 AUD
Regular price Sale price $32.95 AUD
Each
Quantity Required

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Nominal Inside Diameter (d)
38.10
mm
ASME / ANSI B18.22.1
(Equiv. 1.5 in.)
Nominal Outside Diameter (D)
76.20
mm
ASME / ANSI B18.22.1
(Equiv. 3 in.)
Thickness (T)
6.35
mm
ASME / ANSI B18.22.1
(Equiv. 0.25 in.)
Flat Washers - 38.1x76.2x6.35 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 41.27 mm   
Part Number: W0381-F-076-064-HS
Flat Washers - 38.1x76.2x6.35 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $365.14 AUD
Regular price Sale price $365.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
Nominal Inside Diameter (d)
38.10
mm
ASME / ANSI B18.22.1
(Equiv. 1.5 in.)
Nominal Outside Diameter (D)
76.20
mm
ASME / ANSI B18.22.1
(Equiv. 3 in.)
Thickness (T)
6.35
mm
ASME / ANSI B18.22.1
(Equiv. 0.25 in.)
Flat Washers - 38.1x76.2x6.35 mm - Carbon Spring Steel Self Finish
Material: Carbon Spring Steel Self Finish    Actual ID (Ref): 41.27 mm   
Part Number: W0381-F-076-064-HS
Flat Washers - 38.1x76.2x6.35 mm Commercial - Carbon Spring Steel Self Finish Washer
Out of Stock | Backorder Now | Orders can be expected around Sun, Sep 21, 2025
Regular price $365.14 AUD
Regular price Sale price $365.14 AUD
Each
Quantity Required

Backorder: Out of Stock.