The Washer,flat, cataloged under National Stock Number 5310-01-694-7629, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-694-7629 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 0.680 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS2700, METHOD 1, CLASS 4 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5510 NATIONAL STD/SPEC 1ST MATERIAL RESPONSE OR AMS 5512 NATIONAL STD/SPEC 2ND MATERIAL RESPONSE OR AMS 5517 NATIONAL STD/SPEC 3RD MATERIAL RESPONSE OR AMS 5518 NATIONAL STD/SPEC 3RD MATERIAL RESPONSE OR AMS 5519 NATIONAL STD/SPEC 3RD MATERIAL RESPONSE OR AMS 5516 NATIONAL STD/SPEC 4TH MATERIAL RESPONSE OR AMS 5513 NATIONAL STD/SPEC 5TH MATERIAL RESPONSE OR AMS 5524 NATIONAL STD/SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | SQUARE |
| Material | STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.390 INCHES NOMINAL IN |
| Thickness | 0.160 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 |
| Reference | Meaning |
|---|---|
| NAS1401-6C5G | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-694-7629 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-694-7629: Width Across Flats: 0.680 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS2700, METHOD 1, CLASS 4 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: AMS 5510 NATIONAL STD/SPEC 1ST MATERIAL RESPONSE OR AMS 5512 NATIONAL STD/SPEC 2ND MATERIAL RESPONSE OR AMS 5517 NATIONAL STD/SPEC 3RD MATERIAL RESPONSE OR AMS 5518 NATIONAL STD/SPEC 3RD MATERIAL RESPONSE OR AMS 5519 NATIONAL STD/SPEC 3RD MATERIAL RESPONSE OR AMS 5516 NATIONAL STD/SPEC 4TH MATERIAL RESPONSE OR AMS 5513 NATIONAL STD/SPEC 5TH MATERIAL RESPONSE OR AMS 5524 NATIONAL STD/SPEC ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.