The Nut,self-Locking,double Hexagon, cataloged under National Stock Number 5310-01-322-7557, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. The record lists 5 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-322-7557 |
| Primary Part Number | ST2623-10 |
| Item Name | Nut,self-Locking,double Hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| 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 |
|---|---|
| ST2623-10 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| ST2745-10 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 84892-428 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST2624-10 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| H53308-4 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| ST2622-10 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| VN4758WP048 | 5/9 Secondary reference U.S. Government activity |
| 5310PL1866873 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| HS3308-4 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| LH13291-4 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-322-7557 is a Nut,self-Locking,double Hexagon, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-322-7557 has 5 manufacturer part numbers on file: ST2623-10 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), ST2745-10 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 84892-428 (Sps Technologies, Llc Dba PB Fasteners), ST2624-10 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), H53308-4 (Howmet Global Fastening Systems Inc).
Key specifications for ST2623-10: Special Features: USED ON F100PW0229 ENGINE. 0 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.