The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-497-4168, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-497-4168 |
| Primary Part Number | MS21043-06 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Lubrication | SOLUBLE LUBRICANT |
| Washer Outside Diameter | 0.244 INCHES MAXIMUM IN |
| Width Across Flats | 0.181 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Thread Series | UNJC |
| Temp Rating | 800.0 FAHRENHEIT MAXIMUM DEGF |
| Criticality Code Justification | AGAV |
| Washer Thickness | 0.010 INCHES MINIMUM IN |
| Material Document and Classification | AMS5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| MS21043-06 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| MS21043-06 | 5/9 Secondary reference Rolls Royce Corp |
NSN 5310-01-497-4168 is a Nut,plain,extended Washer,hexago, manufactured by Rolls-Royce Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-497-4168 has 1 manufacturer part number on file: MS21043-06 (Rolls-Royce Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-663-9015. Verify interchangeability with system specifications before substitution.
Key specifications for MS21043-06: Lubrication: SOLUBLE LUBRICANT; Overall Height: 0.115 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN; Washer Outside Diameter: 0.244 INCHES MAXIMUM IN; Width Across Flats: 0.181 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN. 14 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.