The Washer,flat, cataloged under National Stock Number 5310-00-100-7796, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Peterson Spring a Peterson American Co Fastener and Special Products. 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 | 5310-00-100-7796 |
| Primary Part Number | 681667A1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Peterson Spring a Peterson American Co Fastener and Special Products |
| Status | ACTIVE |
| Overall Diameter | 2.122 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.389 INCHES NOMINAL IN |
| Thickness | 0.178 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 |
|---|---|
| 681667A1 PRIMARY | Peterson Spring a Peterson American Co Fastener and Special Products (USA) |
NSN 5310-00-100-7796 is a Washer,flat, manufactured by Peterson Spring a Peterson American Co Fastener and Special Products, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-100-7796 has 1 manufacturer part number on file: 681667A1 (Peterson Spring a Peterson American Co Fastener and Special Products).
Key specifications for 681667A1: Overall Diameter: 2.122 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT. 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.