The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-974-6506, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Librascope Corporation. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-974-6506 |
| Primary Part Number | H549160801 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lockheed Martin Librascope Corporation |
| Status | ACTIVE |
| Width Across Flats | 0.346 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | MIL-P-20693 TY 3 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING INSERT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN OR PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.239 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 302 NUT |
| Material | PLASTIC LOCKING INSERT |
| 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 |
|---|---|
| H549160801 PRIMARY | Lockheed Martin Librascope Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1287424PC6 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5310-00-974-6506 is a Nut,self-Locking,hexagon, manufactured by Lockheed Martin Librascope Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-974-6506 has 1 manufacturer part number on file: H549160801 (Lockheed Martin Librascope Corporation).
Key specifications for H549160801: Width Across Flats: 0.346 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF; Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE NUT. 16 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.