Flat Washer: For Screw Size M20, Steel, Not Graded, Black Oxide, 21 mm In Dia, 37 mm Out Dia, 10 PK
Item: 25DK78, MFR: M38100.200.0001, Brand: GRAINGER APPROVED
| System of Measurement | Metric |
| For Screw Size | M20 |
| Material Type | Steel |
| Material | Steel |
| Material Grade/Class | Not Graded, Grade 2 |
| Finish Type | Black Oxide |
| Bolt Compatibility | Grade 2 |
| Inside Diameter | 21 mm |
| Outside Diameter | 37 mm |
| Maximum Thickness | 3 mm |