The Nut,self-Locking,round, cataloged under National Stock Number 5310-01-366-2817, 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 21 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-366-2817 |
| Primary Part Number | 82631-245 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Lubrication | WAX |
| Surface Treatment Document and Classification | QQ-P-416 TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNJS |
| Temp Rating | 75.0 FAHRENHEIT MINIMUM AND 100.0 FAHRENHEIT MAXIMUM DEGF |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | 66JGAAMS 6370 FED STD SINGLE MATERIAL RESPONSE OR AMS 6731 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | ZYTEL-103 CAGEC 81205 MFR REF SINGLE MATERIAL RESPONSE LOCKING INSERT |
| Drive Point Width | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.540 INCHES IN |
| Nut Diameter | 3.110 INCHES MINIMUM AND 3.130 INCHES MAXIMUM IN |
| Drive Point Depth | 0.078 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN |
| Undercut Thickness | 0.075 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Thickness | 0.366 INCHES MINIMUM AND 0.396 INCHES MAXIMUM IN |
| Small End Diameter | 3.015 INCHES MINIMUM AND 3.047 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE NUT |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| 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 |
|---|---|
| 82631-245 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BR9520-4118 | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| BACN10RF245 | 3/2 Design control — primary reference U.S. Government activity |
| SL2822-245 | 3/2 Design control — primary reference U.S. Government activity |
| BR9520-4118 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-366-2817 is a Nut,self-Locking,round, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-366-2817 has 2 manufacturer part numbers on file: 82631-245 (Sps Technologies, Llc Dba PB Fasteners), BR9520-4118 (Esna, Llc).
Key specifications for 82631-245: Lubrication: WAX; Surface Treatment Document and Classification: QQ-P-416 TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE NUT; Thread Series: UNJS; Temp Rating: 75.0 FAHRENHEIT MINIMUM AND 100.0 FAHRENHEIT MAXIMUM DEGF. 21 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.