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ASTM F436
The ASTM F436 specification covers the chemical and mechanical requirements for hardened washers with diameters ranging from 1/4" to 4". These washers are most commonly used with ASTM A325 and ASTM A490 structural bolts, but are also used with other types as well.
| ASTM |
Type |
Material |
| F436 |
Type 1 |
Hardened Carbon Steel |
| F436 |
Type 2 |
Hardened Weathering Steel |
Dimensions
| Nominal Dia. |
ID |
OD |
Thickness |
| 1/2 | 17/32 | 1 1/16 | 0.097 - 0.177 |
| 5/8 | 11/16 | 1 5/16 | 0.122 - 0.177 |
| 3/4 | 13/16 | 1 15/32 | 0.122 - 0.177 |
| 7/8 | 15/16 | 1 3/4 | 0.136 - 0.177 |
| 1 | 1 1/16 | 2 | 0.136 - 0.177 |
| 1 1/8 | 1 3/16 | 2 1/4 | 0.136 - 0.177 |
| 1 1/4 | 1 3/8 | 2 1/2 | 0.136 - 0.177 |
| 1 3/8 | 1 1/2 | 2 3/4 | 0.136 - 0.177 |
| 1 1/2 | 1 5/8 | 3 | 0.136 - 0.177 |
| 1 5/8 | 1 3/4 | 3 1/4 | 0.178 - 0.280 |
| 1 3/4 | 1 7/8 | 3 3/8 | 0.178 - 0.280 |
| 1 7/8 | 2 | 3 1/2 | 0.178 - 0.280 |
| 2 | 2 1/8 | 3 3/4 | 0.178 - 0.280 |
| 2 1/4 | 2 3/8 | 4 | 0.240 - 0.340 |
| 2 1/2 | 2 5/8 | 4 1/2 | 0.240 - 0.340 |
| 2 3/4 | 2 7/8 | 5 | 0.240 - 0.340 |
| 3 | 3 1/8 | 5 1/2 | 0.240 - 0.340 |
| 3 1/4 | 3 3/8 | 6 | 0.240 - 0.340 |
| 3 1/2 | 3 5/8 | 6 1/2 | 0.240 - 0.340 |
| 3.75 | 3 7/8 | 7 | 0.240 - 0.340 |
| 4 | 4 1/8 | 7 1/2 | 0.240 - 0.340 |
