The Washer,key, cataloged under National Stock Number 5310-00-252-8179, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company Dba Raytheon Co. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-252-8179 |
| Primary Part Number | 440762 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-STD-171,FINISH 5.1.2 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 2.370 INCHES MINIMUM AND 2.400 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.000 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN |
| Material Thickness | 0.025 INCHES NOMINAL IN |
| External Key Quantity | 15 |
| Internal Prebent Key Length | 0.060 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.156 INCHES NOMINAL IN |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OVERALL |
| Hole Diameter | 1.500 INCHES MINIMUM AND 1.515 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 |
NSN 5310-00-252-8179 is a Washer,key, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-252-8179 has 2 manufacturer part numbers on file: 440762 (Raytheon Company), 440762 (Raytheon Company Dba Raytheon Co).
1 possible match (shared part number, not a government interchangeability claim): 1210-00-705-6076. Verify interchangeability with system specifications before substitution.
Key specifications for 440762: Surface Treatment Document and Classification: MIL-STD-171,FINISH 5.1.2 MIL STD SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Overall Distance Including Keys: 2.370 INCHES MINIMUM AND 2.400 INCHES MAXIMUM IN; Style Designator: KEY. 13 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.