The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-238-9979, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 13 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 | 5310-00-238-9979 |
| Primary Part Number | 2057053 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Width Across Flats | 1.345 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 171,FIN. 5.4.1 MIL STD SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.062 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.470 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE NUT |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 16 |
| Material | PLASTIC POLYAMIDE NYLON AND STEEL COMP 303 LOCKING INSERT |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| 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 |
|---|---|
| 2057053 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| L318000217 | Lockheed Martin Librascope Corporation (USA) |
NSN 5310-00-238-9979 is a Nut,self-Locking,hexagon, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-238-9979 has 2 manufacturer part numbers on file: 2057053 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), L318000217 (Lockheed Martin Librascope Corporation).
Key specifications for 2057053: Width Across Flats: 1.345 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN; Surface Treatment Document and Classification: 171,FIN. 5.4.1 MIL STD SINGLE TREATMENT RESPONSE NUT; Thread Series: UN; Thread Direction: RIGHT-HAND. 13 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.