The Washer,flat, cataloged under National Stock Number 5310-01-487-7451, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-487-7451 |
| Primary Part Number | 1674M68P03 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Width Across Flats | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Length | 2.110 INCHES MINIMUM AND 2.130 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5536 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | RECTANGULAR |
| Material | NICKEL ALLOY UNS N06002 OVERALL |
| Hole Width Across Flats | 0.320 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Thickness | 0.076 INCHES MINIMUM AND 0.084 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 |
|---|---|
| 1674M68P03 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 1674M68 | D/9 Drawing number reference only General Electric Company |
NSN 5310-01-487-7451 is a Washer,flat, manufactured by General Electric Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-487-7451 has 1 manufacturer part number on file: 1674M68P03 (General Electric Company).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-487-7469. Verify interchangeability with system specifications before substitution.
Key specifications for 1674M68P03: Width Across Flats: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN; Length: 2.110 INCHES MINIMUM AND 2.130 INCHES MAXIMUM IN; Material Document and Classification: AMS 5536 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.