The Washer,flat, cataloged under National Stock Number 5310-01-361-3552, 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12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-361-3552 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.280 INCHES NOMINAL IN |
| Precious Material | SILVER |
| Material Document and Classification | QQ-W-321 FED SPEC SINGLE MATERIAL RESPONSE OR ASTMB121 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | SILVER OVERALL |
| Precious Material and Location | ALLSURFACES SILVER |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.172 INCHES NOMINAL IN |
| Thickness | 0.032 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 |
|---|---|
| 755017A8245-A | 5/9 Secondary reference Federal Screw Products, Inc. |
| 755017A8245-A | 7/2 Vendor item drawing reference L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications |
| 755017A8245-A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-361-3552 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-361-3552: Surface Treatment Document and Classification: QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.280 INCHES NOMINAL IN; Precious Material: SILVER; Material Document and Classification: QQ-W-321 FED SPEC SINGLE MATERIAL RESPONSE OR ASTMB121 ASSN STD 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.