The Washer,flat, cataloged under National Stock Number 5310-01-722-5261, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-722-5261 |
| Primary Part Number | AEW31X375A50BD6MG1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM B633, TYPE VI, SC 3 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.492 INCHES MINIMUM AND 1.529 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM F436, TYPE 1 CARBON STEEL AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 05047-ASME B18.24-2023 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | ZINC OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN |
| Thickness | 0.047 INCHES MINIMUM AND 0.080 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 |
| Part Number | Manufacturer |
|---|---|
| AEW31X375A50BD6MG1 PRIMARY | The American Society of Mechanical Engineers (USA) |
NSN 5310-01-722-5261 is a Washer,flat, manufactured by The American Society of Mechanical Engineers, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-722-5261 has 1 manufacturer part number on file: AEW31X375A50BD6MG1 (The American Society of Mechanical Engineers).
Key specifications for AEW31X375A50BD6MG1: Surface Treatment Document and Classification: ASTM B633, TYPE VI, SC 3 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.492 INCHES MINIMUM AND 1.529 INCHES MAXIMUM IN; Material Document and Classification: ASTM F436, TYPE 1 CARBON STEEL AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE 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.