The Washer,flat, cataloged under National Stock Number 5310-00-264-1390, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Arquus (ex Panhard General Defense). Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-264-1390 |
| Primary Part Number | 541024 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Arquus (ex Panhard General Defense) |
| Status | CANCELLED |
| Overall Diameter | 0.432 INCHES MINIMUM AND 0.457 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-B-611 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | SILVER OR TIN OVERALL |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Thickness | 0.022 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 541024 | Arquus (ex Panhard General Defense) (FRA) |
| AN961-10 | Leach International Europe (FRA) |
| 5M00541024 | Arquus (ex Panhard General Defense) (FRA) |
| Reference | Meaning |
|---|---|
| MS45901-4 | 2/2 Government specification standardization U.S. Government activity |
| 4197410-53 | 5/1 Secondary reference Raytheon Company Div Rmd Strategic |
| 4197410-53 | 5/1 Secondary reference U.S. Government activity |
| 8168220 | 5/1 Secondary reference Us Army Aviation and Missile Command |
| 5310002641390 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| AN961-10 | 4/1 Identification reference U.S. Government activity |
| 812358 | 5/9 Secondary reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament |
| 5310002641390 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5310-00-264-1390 is a Washer,flat, manufactured by Arquus (ex Panhard General Defense), classified under FSC 5310, Nuts and Washers. Status: cancelled.
NSN 5310-00-264-1390 has 3 manufacturer part numbers on file: 541024 (Arquus (ex Panhard General Defense)), AN961-10 (Leach International Europe), 5M00541024 (Arquus (ex Panhard General Defense)).
2 possible matches (shared part number, not a government interchangeability claim): 4940-01-032-6779, 5310-01-420-4536. Verify interchangeability with system specifications before substitution.
Key specifications for 541024: Overall Diameter: 0.432 INCHES MINIMUM AND 0.457 INCHES MAXIMUM IN; Material Document and Classification: QQ-B-611 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: SILVER OR TIN OVERALL. 9 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.
NSN 5310-00-264-1390 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.