The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-589-7140, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-589-7140 |
| Primary Part Number | BH00528-4L |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bristol Industries, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE II, CLASS 2 OR 8 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS5639 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5697 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5685 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5686 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.107 INCHES MINIMUM AND 0.117 INCHES MAXIMUM OVERALL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.284 INCHES MINIMUM AND 0.288 INCHES MAXIMUM OVERALL IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.340 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 304 OR STEEL COMP 305 OR IRON ALLOY 660 OVERALL |
| Bearing Surface Type | CHAMFERED |
| 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 |
|---|---|
| BACN10YT4CD | Boeing Defence Australia Ltd (AUS) |
| BH00528-4L PRIMARY | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| BACN10YT4CD | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-589-7140 is a Nut,self-Locking,hexagon, manufactured by Bristol Industries, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-589-7140 has 2 manufacturer part numbers on file: BACN10YT4CD (Boeing Defence Australia Ltd), BH00528-4L (Bristol Industries, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-652-9122, 5310-01-669-4521. Verify interchangeability with system specifications before substitution.
Key specifications for BH00528-4L: Width Across Flats: 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416, TYPE II, CLASS 2 OR 8 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Material Document and Classification: AMS5639 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5697 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5685 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5686 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.