The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-196-3250, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-196-3250 |
| Primary Part Number | H51650-10 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Width Across Flats | 0.928 INCHES MINIMUM AND 0.940 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 NOMINAL DEGF |
| Material Document and Classification | AMS5525 ASSN STD ALL MATERIAL RESPONSES OR AMS5737 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.6250 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.407 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | IRON ALLOY 660 OVERALL |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| 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 |
|---|---|
| BACN10JC10CD | Sps Technologies, Llc Dba PB Fasteners (USA) |
| H51650-10 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BACN10JC10CD | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| BACN10JC10CD | Boeing Defence Australia Ltd (AUS) |
| 102LH9074-10 | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 102LH9074-10 | 5/9 Secondary reference Harvard Industries Inc |
| H51650-10BAC | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| BACN10JC10CD | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-196-3250 is a Nut,self-Locking,hexagon, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-196-3250 has 5 manufacturer part numbers on file: BACN10JC10CD (Sps Technologies, Llc Dba PB Fasteners), H51650-10 (Howmet Global Fastening Systems Inc), BACN10JC10CD (Boeing Defence Australia Ltd Div Defense, Space & Security), BACN10JC10CD (Boeing Defence Australia Ltd), 102LH9074-10 (Esna, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-669-7097. Verify interchangeability with system specifications before substitution.
Key specifications for H51650-10: Width Across Flats: 0.928 INCHES MINIMUM AND 0.940 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 NOMINAL DEGF. 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.