The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-470-1981, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Department of Defense Project Manager-Mobile Electric Power. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-470-1981 |
| Primary Part Number | 88-20568-1 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Department of Defense Project Manager-Mobile Electric Power |
| Status | ACTIVE |
| Width Across Flats | 0.428 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | ASTM A 380 ASSN STD SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | ASTM A 276 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.212 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE NUT |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING NUT |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Bearing Surface Type | 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 |
|---|---|
| 88-20568-1 PRIMARY | Department of Defense Project Manager-Mobile Electric Power (USA) |
| Reference | Meaning |
|---|---|
| 88-20568 | D/9 Drawing number reference only Department of Defense Project Manager-Mobile Electric Power |
NSN 5310-01-470-1981 is a Nut,self-Locking,hexagon, manufactured by Department of Defense Project Manager-Mobile Electric Power, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-470-1981 has 1 manufacturer part number on file: 88-20568-1 (Department of Defense Project Manager-Mobile Electric Power).
5 possible matches (shared part number, not a government interchangeability claim): 5310-01-470-1998, 5310-01-470-2044, 5310-01-470-2776. Verify interchangeability with system specifications before substitution.
Key specifications for 88-20568-1: Width Across Flats: 0.428 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN; Surface Treatment Document and Classification: ASTM A 380 ASSN STD SINGLE TREATMENT RESPONSE NUT; Thread Series: UNIFIED NATIONAL COARSE (UNC); Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF. 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.