The Washer,keyway, cataloged under National Stock Number 5310-01-265-2102, 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 6 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 | 5310-01-265-2102 |
| Primary Part Number | 70400-08161-101 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Material Document and Classification | MIL-S-5059,COND A MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 1.307 INCHES MINIMUM AND 1.332 INCHES MAXIMUM IN |
| Material Thickness | 0.086 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 301 OR STEEL COMP 302 OVERALL |
| Hole Diameter | 0.938 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 |
|---|---|
| 70400-08161-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5310-01-265-2102 is a Washer,keyway, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-265-2102 has 1 manufacturer part number on file: 70400-08161-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 70400-08161-101: Material Document and Classification: MIL-S-5059,COND A MIL SPEC ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 1.307 INCHES MINIMUM AND 1.332 INCHES MAXIMUM IN; Material Thickness: 0.086 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN; Special Features: FOUR INTERNAL KEYWAYS WITH ROUND BOTTOM SURFACE. 6 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.