The Washer,key, cataloged under National Stock Number 5310-01-280-6769, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Pcx Aerosystems Enfield, Llc Dba Pcx Aerosystems Enfield Llc. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-280-6769 |
| Primary Part Number | 61350-24056-101 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Pcx Aerosystems Enfield, Llc Dba Pcx Aerosystems Enfield Llc |
| Status | ACTIVE |
| Internal Straight Key Width | 0.220 INCHES NOMINAL IN |
| Distance From Centerline to Top of Internal Key | 0.447 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.559 INCHES MINIMUM AND 1.561 INCHES MAXIMUM IN |
| Material Thickness | 0.092 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN |
| External Straight Key Width | 0.220 INCHES NOMINAL IN |
| External Key Quantity | 1 |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE OVERALL |
| Test Data Document | 78286-SS8805 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL COMP 4340 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 1.170 INCHES NOMINAL 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 |
|---|---|
| 61350-24056-101 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 61350-24056-101 PRIMARY | Pcx Aerosystems Enfield, Llc Dba Pcx Aerosystems Enfield Llc (USA) |
NSN 5310-01-280-6769 is a Washer,key, manufactured by Pcx Aerosystems Enfield, Llc Dba Pcx Aerosystems Enfield Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-280-6769 has 2 manufacturer part numbers on file: 61350-24056-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 61350-24056-101 (Pcx Aerosystems Enfield, Llc Dba Pcx Aerosystems Enfield Llc).
Key specifications for 61350-24056-101: Internal Straight Key Width: 0.220 INCHES NOMINAL IN; Distance From Centerline to Top of Internal Key: 0.447 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM. 16 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.