The Washer,flat, cataloged under National Stock Number 5310-01-697-0473, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-697-0473 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 0.870 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-PRF-85582,YPE I,CLASS C1,C2 OR N(TWO COATS) MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5501 ASSN STD 1ST MATERIAL RESPONSE OR AMS 0347 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5517,5518 OR 5519 ASSN STD 3RD MATERIAL RESPONSE OR AMS 5516 ASSN STD 4TH MATERIAL RESPONSE OR AMS 5513 ASSN STD 5TH MATERIAL RESPONSE OR AMS 5524 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 80205-NAS1401 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | PRIMER 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 | 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN |
| Thickness | 0.090 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 |
|---|---|
| NAS1401-8C3G | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-697-0473 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-697-0473: Width Across Flats: 0.870 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-PRF-85582,YPE I,CLASS C1,C2 OR N(TWO COATS) MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: AMS 5501 ASSN STD 1ST MATERIAL RESPONSE OR AMS 0347 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5517,5518 OR 5519 ASSN STD 3RD MATERIAL RESPONSE OR AMS 5516 ASSN STD 4TH MATERIAL RESPONSE OR AMS 5513 ASSN STD 5TH MATERIAL RESPONSE OR AMS 5524 ASSN STD ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 11 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.