The Nut,self-Locking,assembled Washe, cataloged under National Stock Number 5310-01-463-8943, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rolls Royce Corp. Government technical data includes 17 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 | 5310-01-463-8943 |
| Primary Part Number | MS21224-4 |
| Item Name | Nut,self-Locking,assembled Washe |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls Royce Corp |
| Status | ACTIVE |
| Washer Outside Diameter | 0.520 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Width Across Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Bearing Surface Finish | 125.0 MICROINCHES |
| Surface Treatment Document and Classification | QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 250.0 FAHRENHEIT MAXIMUM DEGF |
| Nut Counterbore Depth | 0.172 INCHES MINIMUM AND 0.192 INCHES MAXIMUM NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.299 INCHES MINIMUM AND 0.309 INCHES MAXIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Surface Treatment | CADMIUM AND CHROMATE NUT |
| Surface Treatment | CHROMATE WASHER |
| Nut Style | FLAT WITH TURNED BACK EDGE |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1137 OR STEEL COMP 11L37 OR STEEL COMP 8740 NUT |
| Material | PLASTIC NYLON LOCKING INSERT |
| 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 |
|---|---|
| MS21224-4 PRIMARY | Rolls Royce Corp (USA) |
NSN 5310-01-463-8943 is a Nut,self-Locking,assembled Washe, manufactured by Rolls Royce Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-463-8943 has 1 manufacturer part number on file: MS21224-4 (Rolls Royce Corp).
Key specifications for MS21224-4: Overall Height: 0.365 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN; Washer Outside Diameter: 0.520 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN; Width Across Flats: 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN; Bearing Surface Finish: 125.0 MICROINCHES. 17 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.