The Washer,flat, cataloged under National Stock Number 5310-01-680-2374, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-680-2374 |
| Primary Part Number | AEW31X250A00SA7LP1 |
| 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 | SAE-AMS-QQ-P-35 TYPE VI NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.992 INCHES MINIMUM AND 1.029 INCHES MAXIMUM IN |
| Material Document and Classification | 301,S30100 ANNEALED SST PER ASME B18.24-2015 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 05047-ASME B18.24-2015 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.275 INCHES MINIMUM AND 0.295 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 |
|---|---|
| AEW31X250A00SA7LP1 PRIMARY | The American Society of Mechanical Engineers (USA) |
| Reference | Meaning |
|---|---|
| ANSI B18.21.1 | 5/1 Secondary reference The American Society of Mechanical Engineers |
NSN 5310-01-680-2374 is a Washer,flat, manufactured by The American Society of Mechanical Engineers, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-680-2374 has 1 manufacturer part number on file: AEW31X250A00SA7LP1 (The American Society of Mechanical Engineers).
6 possible matches (shared part number, not a government interchangeability claim): 5310-01-681-3235, 5310-01-681-3242, 5310-01-681-3247. Verify interchangeability with system specifications before substitution.
Key specifications for AEW31X250A00SA7LP1: Surface Treatment Document and Classification: SAE-AMS-QQ-P-35 TYPE VI NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.992 INCHES MINIMUM AND 1.029 INCHES MAXIMUM IN; Material Document and Classification: 301,S30100 ANNEALED SST PER ASME B18.24-2015 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.