The Washer,flat, cataloged under National Stock Number 5310-00-901-6787, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-901-6787 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.370 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN |
| Heat Treatment | F-AS FABRICATED |
| Material Document and Classification | QQ-A-250/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | OXIDE FILM AND ZINC AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 5052 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.149 INCHES NOMINAL IN |
| Reference Number Differentiating Characteristics | NAVORD OD41152 |
| Thickness | 0.0295 INCHES MINIMUM AND 0.0345 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 |
|---|---|
| 153-0048-008 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5310-00-901-6787 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-901-6787: Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE OVERALL; Overall Diameter: 0.370 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN; Heat Treatment: F-AS FABRICATED; Material Document and Classification: QQ-A-250/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 12 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.