Malleable cast iron round washers are used primarily in wood and dock construction. These washers appear oversized and they have a comparatively larger bearing surface that is designed to check bolt heads & nuts from pulling into the timber.
Stock
Diameters: 1/2″ – 1″
Origin: Domestic (no keyhole) and Import (keyhole)
Finish: Plain and hot-dip galvanized
Dimensions
| Bolt Size | A | T | Weight (lbs.) Per 100 Pieces | Part Numbers | |||
|---|---|---|---|---|---|---|---|
| Outside Diameter | Thickness Gauge | Domestic | Import | ||||
| Plain | Galvanized | Plain | Galvanized | ||||
| 1⁄2 | 21⁄2 | 1⁄4 | 22 | 19728 | 19729 | 11983 | 11984 |
| 5⁄8 | 23⁄4 | 5⁄16 | 32 | 19730 | 19731 | 11985 | 11986 |
| 3⁄4 | 3 | 7⁄16 | 42 | 19732 | 19733 | 11987 | 11988 |
| 7⁄8 | 31⁄2 | 7⁄16 | 55 | 19734 | 19735 | 11989 | 11990 |
| 1 | 33⁄4 | 1⁄2 | 63 | 19736 | 19737 | 11991 | 11992 |
| 11⁄8 | 41⁄2 | 1⁄2 | 96 | – | – | 18404 | 18406 |
| 11⁄4 | 5 | 9⁄16 | 121 | – | – | 11995 | 11996 |
| 11⁄2 | 6 | 3⁄4 | 187 | – | – | 15751 | 15752 |
| Reference ASTM A47 for general casting information. | |||||||
Slight variations in thickness and outside diameter dimensions may exist from one lot of washers to another. If these dimensions are critical, ask your Baseline Bolt sales representative to check the dimensions of current inventory prior to ordering.