The Washer,flat, cataloged under National Stock Number 5310-00-995-8377, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-995-8377 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Diameter | 0.670 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Material Document and Classification | -AMS 4640 ASSN STD 1ST MATERIAL RESPONSE OR -MIL-B-6946 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY 630 OR COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.378 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN |
| Thickness | 0.057 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 66-17692-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-995-8377 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-995-8377: Overall Diameter: 0.670 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN; Material Document and Classification: -AMS 4640 ASSN STD 1ST MATERIAL RESPONSE OR -MIL-B-6946 MIL SPEC 2ND MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.