The Nut,self-Locking,single Ball Sea, cataloged under National Stock Number 5310-01-340-8587, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bristol Industries, Llc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-340-8587 |
| Primary Part Number | BH001182A6 |
| Item Name | Nut,self-Locking,single Ball Sea |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bristol Industries, Llc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.645 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN |
| Width Across Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| Hardness Rating | 45.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.025 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR AMS6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Ball Seat Radius | 0.435 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 8740 OR STEEL COMP 4340 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 |
|---|---|
| BH001182A6 PRIMARY | Bristol Industries, Llc (USA) |
| HK51693-6 | Howmet Global Fastening Systems Inc (USA) |
| BH00182-6 | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| 3D0006-6 | 1/2 Source control — Government-approved source U.S. Government activity |
| E10980-6 | 5/9 Secondary reference Harvard Industries Inc |
| VN376A064 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-340-8587 is a Nut,self-Locking,single Ball Sea, manufactured by Bristol Industries, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-340-8587 has 3 manufacturer part numbers on file: BH001182A6 (Bristol Industries, Llc), HK51693-6 (Howmet Global Fastening Systems Inc), BH00182-6 (Bristol Industries, Llc).
Key specifications for BH001182A6: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN; Washer Outside Diameter: 0.645 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN; Width Across Flats: 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN. 17 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.