The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-505-2644, 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 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-505-2644 |
| Primary Part Number | MS21043-08 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls Royce Corp |
| Status | ACTIVE |
| Lubrication | SOLUBLE LUBRICANT |
| Washer Outside Diameter | 0.290 INCHES MAXIMUM IN |
| Width Across Flats | 0.213 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNJC |
| Temp Rating | 800.0 FAHRENHEIT NOMINAL DEGF |
| Washer Thickness | 0.015 INCHES MINIMUM IN |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE AND AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE AND AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | SILVER OVERALL |
| Precious Material and Location | EXTERNAL SURFACE SILVER |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| 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 |
|---|---|
| NSN SPECIFIC V-22 AE1107C ENGINE | Rolls Royce Corp (USA) |
| MS21043-08 PRIMARY | Rolls Royce Corp (USA) |
| Reference | Meaning |
|---|---|
| 5310PL1384354 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-01-505-2644 is a Nut,self-Locking,extended Washer, manufactured by Rolls Royce Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-505-2644 has 2 manufacturer part numbers on file: NSN SPECIFIC V-22 AE1107C ENGINE (Rolls Royce Corp), MS21043-08 (Rolls Royce Corp).
Key specifications for MS21043-08: Lubrication: SOLUBLE LUBRICANT; Overall Height: 0.125 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN; Washer Outside Diameter: 0.290 INCHES MAXIMUM IN; Width Across Flats: 0.213 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN. 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.