The Washer,key, cataloged under National Stock Number 5310-01-080-5749, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Whittet-Higgins Company. Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-080-5749 |
| Primary Part Number | 951B335-1 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Whittet-Higgins Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 1,OILED MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 1.200 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| External Key Quantity | 16 |
| Surface Treatment | OXIDE FILM OVERALL |
| Material | STEEL COMP 1010 OR STEEL COMP 1035 OVERALL |
| 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 |
|---|---|
| 951B335-1 | Whittet-Higgins Company (USA) |
| Reference | Meaning |
|---|---|
| 951B335-1 | 3/2 Design control — primary reference U.S. Government activity |
| 951B335 | 5/9 Secondary reference U.S. Government activity |
| 951B335-1 | 5/9 Secondary reference U.S. Government activity |
| 951B335 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-080-5749 is a Washer,key, manufactured by Whittet-Higgins Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-080-5749 has 1 manufacturer part number on file: 951B335-1 (Whittet-Higgins Company).
Key specifications for 951B335-1: Surface Treatment Document and Classification: MIL-C-13924,CLASS 1,OILED MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Distance Including Keys: 1.200 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL. 7 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.