The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-258-6091, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-258-6091 |
| Primary Part Number | 39S01-1-1AA |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Width Across Flats | 0.564 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.770 INCHES NOMINAL IN |
| Material Accommodated Thickness | 1.340 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Stud Head Height | 0.330 INCHES NOMINAL IN |
| Securing Device Type | SPRING |
| Turnlock Stud Head Style | STUD HEAD |
| Stud Shank Major Diameter | 0.431 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Grip Length | 1.340 INCHES MINIMUM AND 1.380 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 |
|---|---|
| 39S01-1-1AA PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| 5054799-1 | 5/9 Secondary reference Signals Warfare Project Manager |
NSN 5325-01-258-6091 is a Stud,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-258-6091 has 1 manufacturer part number on file: 39S01-1-1AA (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for 39S01-1-1AA: Width Across Flats: 0.564 INCHES NOMINAL IN; Extended Washer Diameter: 0.770 INCHES NOMINAL IN; Material Accommodated Thickness: 1.340 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK. 11 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.