The Washer,flat, cataloged under National Stock Number 5310-01-657-1767, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-657-1767 |
| Primary Part Number | 22UG03 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Overall Diameter | 0.750 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL PROPERTY CLASS 18.8 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.34375 INCHES NOMINAL IN |
| Thickness | 0.047 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 22UG03 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
NSN 5310-01-657-1767 is a Washer,flat, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-657-1767 has 1 manufacturer part number on file: 22UG03 (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 22UG03: Overall Diameter: 0.750 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Special Features: FITS BOLT SIZES: 0.3125 INCH NOMINAL;MATERIAL: 18-8 STAINLESS STEEL;MEETS/EXCEEDS:ASME B18.22.1 IN; Peripheral Shape Style: ROUND. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.