The Washer,key, cataloged under National Stock Number 5310-00-010-9916, 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 13 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-010-9916 |
| Primary Part Number | S6135-20714-1 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Finish | 100.0 MICROINCHES ALL SURFACES |
| External Keyway Width | 0.150 INCHES NOMINAL IN |
| External Straight Key Length | 0.375 INCHES NOMINAL IN |
| Overall Distance Including Keys | 1.750 INCHES NOMINAL IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.045 INCHES MINIMUM AND 1.051 INCHES MAXIMUM IN |
| Material Thickness | 0.063 INCHES NOMINAL IN |
| External Straight Key Width | 0.370 INCHES NOMINAL IN |
| Material | STEEL COMP 1095 OVERALL |
| Angle Between External Keys | 180.0 DEGREES NOMINAL |
| Hole Diameter | 0.750 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 |
|---|---|
| S6135-20714-1 | Leonardo Uk Ltd (GBR) |
| S6135-20714-1 | Rotair Aerospace Corp (USA) |
| S6135-20714-1 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| S6135-20714-1 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-010-9916 is a Washer,key, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-010-9916 has 3 manufacturer part numbers on file: S6135-20714-1 (Leonardo Uk Ltd), S6135-20714-1 (Rotair Aerospace Corp), S6135-20714-1 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for S6135-20714-1: Surface Finish: 100.0 MICROINCHES ALL SURFACES; External Keyway Width: 0.150 INCHES NOMINAL IN; External Straight Key Length: 0.375 INCHES NOMINAL IN; Overall Distance Including Keys: 1.750 INCHES NOMINAL IN. 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.