The Nut,self-Locking,double Hexagon, cataloged under National Stock Number 5310-01-123-2159, 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 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-123-2159 |
| Primary Part Number | H50592-5 |
| Item Name | Nut,self-Locking,double Hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Counterbore Depth | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM FIRST END IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Counterbore Diameter | 0.335 INCHES MINIMUM AND 0.345 INCHES MAXIMUM FIRST END IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| H50592-5 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 10109401 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3020T62P13 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-123-2159 is a Nut,self-Locking,double Hexagon, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-123-2159 has 1 manufacturer part number on file: H50592-5 (Howmet Global Fastening Systems Inc).
Key specifications for H50592-5: Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Counterbore Depth: 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM FIRST END IN; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.312 INCHES IN. 9 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.