Telephone 01202 478899
Facsimile 01202 474222
sales@nutsaboutbolts.org
We supply form B Washers in mild steel, Stainless Steel grades A2 (304) & A4 (316),
& Brass.
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Form A, Form B,
Form C,
Form D ,
Form G/DIN9021 ,
DIN440R
Dimensions for Form B Washers
| Bolt Size |
Inside Diameter |
Outside Diameter |
Thickness |
| M5 |
5.3mm |
10mm |
0.8mm |
| M6 |
6.4mm |
12.5mm |
0.8mm |
| M8 |
8.4mm |
17mm |
1.0mm |
| M10 |
10.5mm |
21mm |
1.25mm |
| M12 |
13mm |
24mm |
1.25mm |
| M14 |
15mm |
28mm |
1.6mm |
| M16 |
17mm |
30mm |
2.0mm |
| M18 |
19mm |
34mm |
2.0mm |
| M20 |
21mm |
37mm |
2.0mm |
| M22 |
23mm |
39mm |
2.0mm |
| M24 |
25mm |
44mm |
2.5mm |
| M27 |
28mm |
50mm |
2.5mm |
| M30 |
31mm |
56mm |
2.5mm |
| M33 |
34mm |
60mm |
3.0mm |
| M36 |
37mm |
66mm |
3.0mm |
| M39 |
40mm |
72mm |
3.0mm |
