Washers provide a smooth bearing surface and are used under the head of a bolt and/or a nut. Flat washers are covered under the ASTM specification F844. These washers are unhardened and intended for general use.
Stock
Diameters: 1/2″ – 3″
Origin: Import
Finish: Plain and hot-dip galvanized
Manufacturing
Portland Bolt has the ability to manufacture or provide nonstandard square, rectangular, or round washers meeting the requirements of ASTM A36, A572 Grade 50, or F436.
Dimensions
| Bolt Size | A | B | C | Weight (lbs.) Per 100 Pieces | Part numbers | |
|---|---|---|---|---|---|---|
| Inside Diameter | Outside Diameter | Thickness | Import | |||
| Plain | Galvanized | |||||
| 1⁄2 | 9⁄16 | 13⁄8 | 0.109 | 4 | 19794 | 19795 |
| 5⁄8 | 11⁄16 | 13⁄4 | 0.134 | 8 | 19796 | 19797 |
| 3⁄4 | 13⁄16 | 2 | 0.148 | 11 | 19798 | 19799 |
| 7⁄8 | 15⁄16 | 21⁄4 | 0.165 | 15 | 19800 | 19801 |
| 1 | 11⁄16 | 21⁄2 | 0.165 | 19 | 19802 | 19803 |
| 11⁄8 | 11⁄4 | 23⁄4 | 0.165 | 22 | 19804 | 19805 |
| 11⁄4 | 13⁄8 | 3 | 0.165 | 26 | 19806 | 19807 |
| 13⁄8 | 11⁄2 | 31⁄4 | 0.180 | 33 | 19808 | 19809 |
| 11⁄2 | 15⁄8 | 31⁄2 | 0.180 | 38 | 19810 | 19811 |
| 15⁄8 | 13⁄4 | 33⁄4 | 0.180 | 43 | - | - |
| 13⁄4 | 17⁄8 | 4 | 0.180 | 50 | 19812 | 19813 |
| 17⁄8 | 2 | 41⁄4 | 0.180 | 57 | - | - |
| 2 | 21⁄8 | 41⁄2 | 0.180 | 63 | 19814 | 19815 |
| 21⁄4 | 23⁄8 | 43⁄4 | 0.220 | 83 | 16434 | 16435 |
| 21⁄2 | 25⁄8 | 5 | 0.238 | 96 | 16436 | 16437 |
| 23⁄4 | 27⁄8 | 51⁄4 | 0.259 | 110 | 16670 | 16671 |
| 3 | 31⁄8 | 51⁄2 | 0.284 | 130 | 16438 | 16439 |
| Dimensions per ASME B18.21.1 | ||||||