The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-059-4677, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-01-059-4677 |
| Primary Part Number | DHPQ-7900-6A2.5 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Width Across Flats | 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN |
| Drive Type | CROSS RECESS |
| Stud Head Height | 0.082 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN |
| Turnlock Stud Head Style | STUD HEAD |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL OVERALL |
| Stud Thread Size and Series/type Designator | 0.138-32 UNIFIED NATIONAL COARSE (UNC) |
| Grip Length | 0.141 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 583R580J01 | Northrop Grumman Support Services Corp (USA) |
| DHPQ-7900-6A2.5 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 583R580J01 | 5/9 Secondary reference U.S. Government activity |
| DHPQ-7900-6A2.5 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5325-01-059-4677 is a Stud,turnlock Fastener, manufactured by Huck International, Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-059-4677 has 2 manufacturer part numbers on file: 583R580J01 (Northrop Grumman Support Services Corp), DHPQ-7900-6A2.5 (Huck International, Inc).
Key specifications for DHPQ-7900-6A2.5: Width Across Flats: 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN; Drive Type: CROSS RECESS; Stud Head Height: 0.082 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN; Turnlock Stud Head Style: STUD HEAD. 8 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.