The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-598-8901, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Nd Defense Llc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-598-8901 |
| Primary Part Number | 3931486C1 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Nd Defense Llc |
| Status | ACTIVE |
| Washer Outside Diameter | 11.8 MILLIMETERS NOMINAL MM |
| Width Across Flats | 8.0 MILLIMETERS NOMINAL MM |
| Thread Series | M |
| Thread Pitch in Millimeters | 0.8 |
| Temp Rating | 250.0 FAHRENHEIT MAXIMUM DEGF |
| Hardness Rating | 28.0 ROCKWELL C NOMINAL |
| Washer Thickness | 1.0 MILLIMETERS NOMINAL MM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 5.0 MILLIMETERS MM |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Surface Treatment | ZINC OVERALL EXCEPT INSERT |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Material | STEEL OVERALL EXCEPT INSERT |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-01-598-8901 is a Nut,self-Locking,extended Washer, manufactured by Nd Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-598-8901 has 2 manufacturer part numbers on file: 92461A200 (Mcmaster-Carr Supply Co), 3931486C1 (Nd Defense Llc).
Key specifications for 3931486C1: Overall Height: 7.1 MILLIMETERS NOMINAL MM; Washer Outside Diameter: 11.8 MILLIMETERS NOMINAL MM; Width Across Flats: 8.0 MILLIMETERS NOMINAL MM; Thread Series: M. 15 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.