The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-417-5157, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 12 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 | 5310-01-417-5157 |
| Primary Part Number | 903-5912048PC8 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Washer Outside Diameter | 0.795 INCHES MINIMUM AND 0.805 INCHES MAXIMUM IN |
| Width Across Flats | 0.672 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Washer Thickness | 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-23284 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL 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 |
|---|---|
| 903-5912048PC8 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5310-01-417-5157 is a Nut,self-Locking,extended Washer, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-417-5157 has 1 manufacturer part number on file: 903-5912048PC8 (Naval Sea Systems Command).
Key specifications for 903-5912048PC8: Overall Height: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN; Washer Outside Diameter: 0.795 INCHES MINIMUM AND 0.805 INCHES MAXIMUM IN; Width Across Flats: 0.672 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN; Thread Series: UNF. 12 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.