The Washer,flat, cataloged under National Stock Number 5310-01-490-3137, 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8 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-490-3137 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM OR 45.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS5596 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5597 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.384 INCHES MINIMUM AND 1.394 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | NICKEL ALLOY 718 OVERALL |
| Hole Diameter | 0.078 INCHES MINIMUM AND 0.793 INCHES MAXIMUM IN |
| Thickness | 0.099 INCHES MINIMUM AND 0.119 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 |
|---|---|
| NASM14183 | 3/1 Design control — primary reference U.S. Government activity |
| 5310PL2178597 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| MS14183L-C12 | 3/2 Design control — primary reference U.S. Government activity |
| MS14183L-C12 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-490-3137 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-490-3137: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 36.0 ROCKWELL C MINIMUM OR 45.0 ROCKWELL C MAXIMUM; Material Document and Classification: AMS5596 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5597 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.384 INCHES MINIMUM AND 1.394 INCHES MAXIMUM IN. 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.