The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-179-3740, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-179-3740 |
| Primary Part Number | 9970M89P02 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Washer Outside Diameter | 1.050 INCHES MINIMUM AND 1.054 INCHES MAXIMUM IN |
| Width Across Flats | 0.803 INCHES MINIMUM AND 0.814 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS2510 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Thickness | 0.208 INCHES NOMINAL IN |
| Material Document and Classification | AMS5646 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.5625 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | SILVER OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| 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 |
|---|---|
| 9970M89P02 PRIMARY | General Electric Company (USA) |
NSN 5310-01-179-3740 is a Nut,self-Locking,extended Washer, manufactured by General Electric Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-179-3740 has 1 manufacturer part number on file: 9970M89P02 (General Electric Company).
Key specifications for 9970M89P02: Overall Height: 0.535 INCHES NOMINAL IN; Washer Outside Diameter: 1.050 INCHES MINIMUM AND 1.054 INCHES MAXIMUM IN; Width Across Flats: 0.803 INCHES MINIMUM AND 0.814 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS2510 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 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.