The Washer,keyway, cataloged under National Stock Number 5310-00-385-9835, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-385-9835 |
| Primary Part Number | 20J910PC281 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Distance From Centerline to Bottom of Internal Keyway | 1.219 INCHES NOMINAL IN |
| Internal Keyway Width | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-20166 GR M MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.250 INCHES NOMINAL IN |
| Internal Keyway Quantity | 1 |
| Material Thickness | 0.250 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 2.156 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 |
|---|---|
| 20J910PC281 PRIMARY | Westinghouse Electric Corp (USA) |
| 1387058 PRIMARY | Westinghouse Electric Corp (USA) |
NSN 5310-00-385-9835 is a Washer,keyway, manufactured by Westinghouse Electric Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-385-9835 has 2 manufacturer part numbers on file: 20J910PC281 (Westinghouse Electric Corp), 1387058 (Westinghouse Electric Corp).
Key specifications for 20J910PC281: Distance From Centerline to Bottom of Internal Keyway: 1.219 INCHES NOMINAL IN; Internal Keyway Width: 0.250 INCHES NOMINAL IN; Material Document and Classification: MIL-S-20166 GR M MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 3.250 INCHES NOMINAL IN. 8 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.