FinishBlack OxideInside Diameter (A)0.531 inJERGENS #31940MaterialC1010 SteelMori SeikiDURA VERTICAL 5060, DURA VERTICAL 5080, DURA VERTICAL 5100, NH4000Outside Diameter (B)1.125 inStud Size1/2Thickness (C)0.188 inTypeFlat WasherWeight per 100 pcs0.04 lb
| Finish | Black Oxide |
| Inside Diameter (A) | 0.531 in |
| JERGENS # | 31940 |
| Material | C1010 Steel |
| Mori Seiki | DURA VERTICAL 5060, DURA VERTICAL 5080, DURA VERTICAL 5100, NH4000 |
| Outside Diameter (B) | 1.125 in |
| Stud Size | 1/2 |
| Thickness (C) | 0.188 in |
| Type | Flat Washer |
| Weight per 100 pcs | 0.04 lb |