The Washer,key, cataloged under National Stock Number 5310-00-458-1627, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-458-1627 |
| Primary Part Number | 65370-04128-101 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Finish | 90.0 MICROINCHES ALL SURFACES |
| Surface Treatment Document and Classification | MIL-C-1324,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 1.900 INCHES NOMINAL IN |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.470 INCHES NOMINAL IN |
| Material Thickness | 0.090 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN |
| External Straight Key Width | 0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN |
| External Key Quantity | 4 |
| Surface Treatment | OXIDE FILM OVERALL |
| Minimum Tensile Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Material | STEEL OVERALL |
| Hole Diameter | 1.200 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 |
|---|---|
| 65370-04128-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5310-00-458-1627 is a Washer,key, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-458-1627 has 1 manufacturer part number on file: 65370-04128-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 65370-04128-101: Surface Finish: 90.0 MICROINCHES ALL SURFACES; Surface Treatment Document and Classification: MIL-C-1324,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Distance Including Keys: 1.900 INCHES NOMINAL IN; Hardness Rating: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM. 14 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.