The Washer,key, cataloged under National Stock Number 5310-01-124-1260, 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 11 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 | 5310-01-124-1260 |
| Primary Part Number | 65122-11335-101 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 2.940 INCHES NOMINAL IN |
| External Prebent Key Length | 0.115 INCHES NOMINAL IN |
| Overall Distance Including Keys | 6.275 INCHES NOMINAL IN |
| Small External Prebent Key Width | 0.440 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059,COND A MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 5.850 INCHES NOMINAL IN |
| Material Thickness | 0.063 INCHES NOMINAL IN |
| External Key Quantity | 19 |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 301 OR STEEL COMP 302 OVERALL |
| Hole Diameter | 5.125 INCHES MINIMUM AND 5.135 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 |
|---|---|
| 65122-11335-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5310-01-124-1260 is a Washer,key, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-124-1260 has 1 manufacturer part number on file: 65122-11335-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 65122-11335-101: Distance From Centerline to Inside of Prebent Key: 2.940 INCHES NOMINAL IN; External Prebent Key Length: 0.115 INCHES NOMINAL IN; Overall Distance Including Keys: 6.275 INCHES NOMINAL IN; Small External Prebent Key Width: 0.440 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN. 11 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.