The Nut,self-Locking,cap, cataloged under National Stock Number 5310-01-156-8997, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Muirhead Aerospace Ltd. Government technical data includes 12 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-156-8997 |
| Primary Part Number | 44586 |
| Item Name | Nut,self-Locking,cap |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Muirhead Aerospace Ltd |
| Status | ACTIVE |
| Width Across Flats | 0.307 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | BSS.A.181C66UP,FSCM K0062 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.233 INCHES NOMINAL IN |
| Nut Style | CAP |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Bearing Surface Type | CHAMFERED |
| 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 |
|---|---|
| 44586 PRIMARY | Muirhead Aerospace Ltd (GBR) |
NSN 5310-01-156-8997 is a Nut,self-Locking,cap, manufactured by Muirhead Aerospace Ltd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-156-8997 has 1 manufacturer part number on file: 44586 (Muirhead Aerospace Ltd).
3 possible matches (shared part number, not a government interchangeability claim): 5920-01-177-1138, 5920-01-181-4660, 7520-01-519-4372. Verify interchangeability with system specifications before substitution.
Key specifications for 44586: Width Across Flats: 0.307 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: BSS.A.181C66UP,FSCM K0062 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 12 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.