The Nut,self-Locking,assembled Washe, cataloged under National Stock Number 5310-00-181-6250, 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 16 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-181-6250 |
| Primary Part Number | HW17-9 |
| Item Name | Nut,self-Locking,assembled Washe |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Washer Outside Diameter | 1.000 INCHES MAXIMUM IN |
| Width Across Flats | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Nut Counterbore Depth | 0.082 INCHES MINIMUM AND 0.097 INCHES MAXIMUM NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.562 INCHES IN |
| Counterbore Diameter | 0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | FLAT WITH TURNED UP EDGE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 4140 WASHER |
| Material | STEEL COMP E4340 OR STEEL COMP 8740 NUT |
| 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 |
|---|---|
| HW17-9 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| C389-9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| C389-9 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| TLN1000-9 | 5/9 Secondary reference U.S. Government activity |
| C389-9 | 5/2 Secondary reference U.S. Government activity |
| TLN1000-9 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| TLN1000-9 | 5/9 Secondary reference U.S. Government activity |
| C389-9 | 7/2 Vendor item drawing reference U.S. Government activity |
| TLN1000-9 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| LH7610-9 | 3/9 Design control — primary reference Harvard Industries Inc |
| TLN1000-9 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-181-6250 is a Nut,self-Locking,assembled Washe, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-181-6250 has 3 manufacturer part numbers on file: HW17-9 (Howmet Global Fastening Systems Inc), C389-9 (Sps Technologies, Llc Dba PB Fasteners), C389-9 (Howmet Global Fastening Systems Inc).
Key specifications for HW17-9: Overall Height: 0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN; Washer Outside Diameter: 1.000 INCHES MAXIMUM IN; Width Across Flats: 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 16 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.