The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-005-5760, 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 14 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-005-5760 |
| Primary Part Number | ST2162-09 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Washer Outside Diameter | 0.330 INCHES MAXIMUM IN |
| Width Across Flats | 0.243 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.025 INCHES MINIMUM IN |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Countersink Angle | 90.0 DEGREES NOMINAL NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL 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 |
|---|---|
| ST2161-10 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| ST2162-09 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 4066226 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| ST2160-10 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| ST2160-10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST2161-10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST2162-09 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| H29164-3 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| 5310PL1731287 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 74735-1032 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 5310PL0739863 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| E11520-3 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-005-5760 is a Nut,self-Locking,extended Washer, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-005-5760 has 7 manufacturer part numbers on file: ST2161-10 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), ST2162-09 (Howmet Global Fastening Systems Inc), 4066226 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), ST2160-10 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), ST2160-10 (Sps Technologies, Llc Dba PB Fasteners) and 2 more.
Key specifications for ST2162-09: Overall Height: 0.188 INCHES MAXIMUM IN; Washer Outside Diameter: 0.330 INCHES MAXIMUM IN; Width Across Flats: 0.243 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 14 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.