The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-151-8991, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-151-8991 |
| Primary Part Number | 39A74008 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Washer Outside Diameter | 0.290 INCHES MAXIMUM IN |
| Width Across Flats | 0.218 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Precious Material | SILVER |
| Washer Thickness | 0.035 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | SILVER OVERALL |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 39A74008 PRIMARY | Triumph Engine Control Systems Llc (USA) |
NSN 5310-00-151-8991 is a Nut,self-Locking,extended Washer, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-151-8991 has 1 manufacturer part number on file: 39A74008 (Triumph Engine Control Systems Llc).
Key specifications for 39A74008: Overall Height: 0.188 INCHES NOMINAL IN; Washer Outside Diameter: 0.290 INCHES MAXIMUM IN; Width Across Flats: 0.218 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC). 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.