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Malleable cast iron round washers are used in dock and wood construction. These oversized washers have a large bearing surface designed to prevent bolt heads and nuts from pulling into the wood.
Diameters: 3/8" - 1"
Origin: Domestic and Import
Finish: Black and hot-dip galvanized
| Bolt Size | A | T | Weight In Pounds Per 100 Pieces |
|---|---|---|---|
| Outside Diameter | Thickness Gauge | ||
| 3/8 | 2-1/2 | 1/4 | 18 |
| 1/2 | 2-1/2 | 1/4 | 2 |
| 5/8 | 2-3/4 | 5/16 | 32 |
| 3/4 | 3 | 7/16 | 42 |
| 7/8 | 3-1/2 | 7/16 | 55 |
| 1 | 4 | 1/2 | 69 |
| 1-1/8 | 4-1/2 | 1/2 | 96 |
| 1-1/4 | 5 | 9/16 | 121 |
| 1-1/2 | 6 | 3/4 | 187 |
Reference ASTM A47 for general casting information
