The Washer,key, cataloged under National Stock Number 5310-00-032-6985, 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 10 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 | 5310-00-032-6985 |
| Primary Part Number | S10-10-5378 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| External Straight Key Length | 0.281 INCHES NOMINAL IN |
| Overall Distance Including Keys | 1.312 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Peening Key Length | 0.281 INCHES NOMINAL IN |
| Material Thickness | 0.035 INCHES NOMINAL IN |
| External Straight Key Width | 0.218 INCHES MAXIMUM IN |
| External Key Quantity | 5 |
| Hole Diameter | 0.640 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 |
|---|---|
| S10-10-5378 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5310-00-032-6985 is a Washer,key, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-032-6985 has 1 manufacturer part number on file: S10-10-5378 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for S10-10-5378: External Straight Key Length: 0.281 INCHES NOMINAL IN; Overall Distance Including Keys: 1.312 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 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.