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M12 Metric Washers in A4 Stainless Steel

This page lists all the various types of M12 Metric Washers in A4 Stainless Steel that we currently offer. Use this page to help select suitable washers for M12 metric bolts or screws.

The accompanying flat washer dimension table allows convenient comparison between the available M12 flat washer dimensions. The table only includes flat washers and, for completeness, may include washers only available in other materials.
M12 Flat Washer Dimensions ()
Type inner
diameter
outer
diameter
thickness
Form A
DIN 125
13.0 24.0 2.5
Form B
BS 4320
13.0 24.0 1.6
Form C
BS 4320
13 28 2.5
ISO 7089 13.0 24.0 2.5
ISO 7090 13.0 24.0 2.5
DIN 9021 13.0 37 3.0
For Cheesehead
DIN 433
13.0 20.0 2.0
Penny v1 12.5 30 1.3-1.5
Penny v2 12.5 35 1.3-1.5
Penny v3 12.5 40 1.3-1.5
Penny v4 12.5 50 1.3-1.5
Westfield Fasteners Ltd 2025
M12 Flat Washer Dimensions ()
Type inner
diameter
outer
diameter
thickness
Form A
DIN 125
13.0 24.0 2.5
Form B
BS 4320
13.0 24.0 1.6
Form C
BS 4320
13 28 2.5
ISO 7089 13.0 24.0 2.5
ISO 7090 13.0 24.0 2.5
DIN 9021 13.0 37 3.0
For Cheesehead
DIN 433
13.0 20.0 2.0
Penny v1 12.5 30 1.3-1.5
Penny v2 12.5 35 1.3-1.5
Penny v3 12.5 40 1.3-1.5
Penny v4 12.5 50 1.3-1.5
Westfield Fasteners Ltd 2025
Image Description Sale Qtys Qty Price Breakdown Despatch Estimate
M12 Conical Seat Washer (Type D) in A4 Stainless
WF51312 - 516 in stock
single washer for £2.79
or box of 25 for £14.53
or bulk of 125 for £71.16
£0.00  
M12 Countersunk Cup Washer Stamped in A4 Stainless Steel
WF78650 - 190 in stock
single washer for £3.07
or box of 20 for £17.04
or bulk of 100 for £59.45
£0.00  
M12 Washer for Wood Construction DIN 440 Type V in A4 Stainless
WF86212 - expected in 26 to 39 days
single washer for £3.33
or box of 15 for £19.38
or bulk of 75 for £79.70
£0.00  
M12 For Cheesehead Washer in A4 Stainless
WF14824 - 56 in stock
sachet of 2 for £1.27
or box of 200 for £15.71
or bulk of 1000 for £65.73
£0.00  
M12 Countersunk Washer in A4 Stainless
WF57596 - 308 in stock
single washer for £3.54
or box of 20 for £31.79
or bulk of 100 for £131.18
£0.00  
Form A Washer M12 in A4 Stainless
WF10894 - 259 in stock
sachet of 2 for £1.85
or box of 150 for £17.85
or bulk of 750 for £71.98
£0.00  
M12 Form B Washer in A4 Stainless
WF13308 - 1925 in stock
sachet of 2 for £1.31
or box of 200 for £16.58
or bulk of 1000 for £68.00
£0.00  
M12 Form C Washer in A4 Stainless
WF14843 - 44 in stock
single washer for £2.25
or box of 80 for £22.35
or bulk of 400 for £90.43
£0.00  
M12 Heavy Washer in A4 Stainless
WF51111 - 70 in stock
single washer for £3.21
or box of 30 for £34.74
or bulk of 150 for £132.24
£0.00  
M12 Square Taper Washer for I-Sections in A4 Stainless Steel
WF86292 - expected in 22 to 33 days
single washer for £3.22
or box of 10 for £18.07
or bulk of 50 for £76.32
£0.00  
M12 200HV Flat Plain Washer ISO 7089 in A4 Stainless
WF69660 - 334 in stock
single washer for £1.55
or box of 100 for £19.15
or bulk of 500 for £78.78
£0.00  
M12 Large Washer to DIN 9021 in A4 Stainless
WF14849 - 250 in stock
single washer for £2.49
or box of 50 for £18.98
or bulk of 250 for £75.83
£0.00  
30mm OD M12 Penny Washer in A4 Stainless
WF60239 - 475 in stock
single washer for £1.27
or box of 100 for £15.78
or bulk of 500 for £65.71
£0.00  
35mm OD M12 Penny Washer in A4 Stainless
WF10899 - 120 in stock
single washer for £2.45
or box of 80 for £25.99
or bulk of 400 for £105.63
£0.00  
50mm OD M12 Penny Washer in A4 Stainless
WF60243 - 227 in stock
single washer for £2.86
or box of 20 for £14.46
or bulk of 100 for £61.15
£0.00  
Shakeproof Lock Washer External Tooth M12 in A4 Stainless
WF56858 - 966 in stock
sachet of 3 for £1.24
or box of 400 for £20.37
or bulk of 2000 for £83.45
£0.00  
M12 Spherical Washer (Type C) in A4 Stainless
WF51300 - 53 in stock
single washer for £3.02
or box of 25 for £23.75
or bulk of 125 for £98.59
£0.00  
M12 Spring Washer (Rectangular) in A4 Stainless
WF20944 - 516 in stock
sachet of 3 for £1.47
or box of 300 for £19.15
or bulk of 1500 for £76.27
£0.00  
M12 Spring Washer (Square) in A4 Stainless
WF10913 - 899 in stock
sachet of 3 for £1.12
or box of 300 for £14.38
or bulk of 1500 for £59.53
£0.00  
M12 Square Plate Washer in A4 Stainless
WF39007 - 31 in stock
single washer for £1.67
or box of 25 for £19.36
or bulk of 125 for £77.56
£0.00  
Square Taper Washer U-sections M12 in A4 Stainless
WF57022 - expected in 17 to 26 days
single washer for £2.83
or box of 15 for £21.72
or bulk of 75 for £89.90
£0.00  
M12 Tab Washer to DIN 463 in A4 Stainless
WF66373 - 25 in stock
sachet of 2 for £1.18
or box of 80 for £16.48
or bulk of 400 for £68.43
£0.00  
M12 Washer for Wood Construction DIN 440 Type R in A4 Stainless
WF88356 - expected in 14 to 21 days
single washer for £2.80
or box of 30 for £21.16
or bulk of 150 for £86.09
£0.00  
single washer for £2.79
or box of 25 for £14.53
or bulk of 125 for £71.16
single washer for £3.07
or box of 20 for £17.04
or bulk of 100 for £59.45
single washer for £3.33
or box of 15 for £19.38
or bulk of 75 for £79.70
sachet of 2 for £1.27
or box of 200 for £15.71
or bulk of 1000 for £65.73
single washer for £3.54
or box of 20 for £31.79
or bulk of 100 for £131.18
sachet of 2 for £1.85
or box of 150 for £17.85
or bulk of 750 for £71.98
sachet of 2 for £1.31
or box of 200 for £16.58
or bulk of 1000 for £68.00
single washer for £2.25
or box of 80 for £22.35
or bulk of 400 for £90.43
single washer for £3.21
or box of 30 for £34.74
or bulk of 150 for £132.24
single washer for £3.22
or box of 10 for £18.07
or bulk of 50 for £76.32
single washer for £1.55
or box of 100 for £19.15
or bulk of 500 for £78.78
single washer for £2.49
or box of 50 for £18.98
or bulk of 250 for £75.83
single washer for £1.27
or box of 100 for £15.78
or bulk of 500 for £65.71
single washer for £2.45
or box of 80 for £25.99
or bulk of 400 for £105.63
single washer for £2.86
or box of 20 for £14.46
or bulk of 100 for £61.15
sachet of 3 for £1.24
or box of 400 for £20.37
or bulk of 2000 for £83.45
single washer for £3.02
or box of 25 for £23.75
or bulk of 125 for £98.59
sachet of 3 for £1.47
or box of 300 for £19.15
or bulk of 1500 for £76.27
sachet of 3 for £1.12
or box of 300 for £14.38
or bulk of 1500 for £59.53
single washer for £1.67
or box of 25 for £19.36
or bulk of 125 for £77.56
single washer for £2.83
or box of 15 for £21.72
or bulk of 75 for £89.90
sachet of 2 for £1.18
or box of 80 for £16.48
or bulk of 400 for £68.43
single washer for £2.80
or box of 30 for £21.16
or bulk of 150 for £86.09
Prices are subject to quantity discounts based on a sliding scale. Enter the desired quantity in the relevant box in the table above. This will automatically calculate a line price indicating the applicable rate for the quantities selected. All prices shown exclude VAT.
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