The Nut,self-Locking,square, cataloged under National Stock Number 5310-01-580-6404, 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 16 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 | 5310-01-580-6404 |
| Primary Part Number | 8355304 |
| Item Name | Nut,self-Locking,square |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 1.230 INCHES NOMINAL IN |
| Hole Thread Quantity Per Inch | 24 |
| Surface Treatment Document and Classification | AMS QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Hole Configuration Style | CONFIGURATION D |
| Material Document and Classification | AMS-5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Nut Height | 0.450 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | SQUARE |
| Thread Class | 2B |
| Hole Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Quantity Per Inch | 24 |
| Material | IRON ALLOY 660 OVERALL |
| Bearing Surface Type | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-01-580-6404 is a Nut,self-Locking,square, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-580-6404 has 2 manufacturer part numbers on file: 8355304 (Raytheon Company), 8355304 (Naval Sea Systems Command).
Key specifications for 8355304: Width Across Flats: 1.230 INCHES NOMINAL IN; Hole Thread Quantity Per Inch: 24; Surface Treatment Document and Classification: AMS QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF. 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.