The Nut,self-Locking,double Hexagon, cataloged under National Stock Number 5310-01-143-1767, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is National Aerospace Fasteners Corporation. Government technical data includes 15 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-143-1767 |
| Primary Part Number | HCG8KW08-5-S |
| Item Name | Nut,self-Locking,double Hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | National Aerospace Fasteners Corporation |
| Status | ACTIVE |
| Width Across Flats | 0.438 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Counterbore Depth | 0.060 INCHES NOMINAL FIRST END IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.313 INCHES IN |
| Counterbore Diameter | 0.340 INCHES NOMINAL FIRST END IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.400 INCHES NOMINAL IN |
| Surface Treatment | SILVER THREADS |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| HCG8KW08-5-S PRIMARY | National Aerospace Fasteners Corporation |
| H50587-5 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HCG8KW-5-S PRIMARY | National Aerospace Fasteners Corporation |
| Reference | Meaning |
|---|---|
| 10109790 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| LH12300-5 | 5/9 Secondary reference Harvard Industries Inc |
| 4061T20P03 | 3/2 Design control — primary reference U.S. Government activity |
| 4061T20P08 | 5/2 Secondary reference U.S. Government activity |
| 4061T20 | 1/2 Source control — Government-approved source U.S. Government activity |
| 4061T20P01 | 3/2 Design control — primary reference U.S. Government activity |
| 4061T20P02 | 3/2 Design control — primary reference U.S. Government activity |
| VN776WA054 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-143-1767 is a Nut,self-Locking,double Hexagon, manufactured by National Aerospace Fasteners Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-143-1767 has 3 manufacturer part numbers on file: HCG8KW08-5-S (National Aerospace Fasteners Corporation), H50587-5 (Howmet Global Fastening Systems Inc), HCG8KW-5-S (National Aerospace Fasteners Corporation).
Key specifications for HCG8KW08-5-S: Width Across Flats: 0.438 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Counterbore Depth: 0.060 INCHES NOMINAL FIRST END IN. 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.