The Nut,self-Locking,castellated,dou, cataloged under National Stock Number 5310-01-496-7142, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 13 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 | 5310-01-496-7142 |
| Primary Part Number | 61170D-524 |
| Item Name | Nut,self-Locking,castellated,dou |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.531 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TYPE II CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 900.0 FAHRENHEIT MAXIMUM DEGF |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Nut Height | 0.385 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | CASTELLATED, DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | IRON ALLOY 660 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 |
|---|---|
| 61170D-524 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
NSN 5310-01-496-7142 is a Nut,self-Locking,castellated,dou, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-496-7142 has 1 manufacturer part number on file: 61170D-524 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 61170D-524: Width Across Flats: 0.531 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TYPE II CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Temp Rating: 900.0 FAHRENHEIT MAXIMUM DEGF. 13 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.