The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-974-0582, 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. Government technical data includes 14 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-974-0582 |
| Primary Part Number | BACF34D4B3S |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Drive Type | SOCKET |
| Material Accommodated Thickness | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Extension Length | 0.361 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.358 INCHES NOMINAL IN |
| Stud Head Height | 0.0194 INCHES MINIMUM AND 0.0240 INCHES MAXIMUM IN |
| Securing Device Type | RING |
| Turnlock Stud Head Style | FLAT FILLISTER |
| Stud Shank Major Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 431 OVERALL |
| Stud Thread Size and Series/type Designator | 0.164-32 UNIFIED NATIONAL COARSE (UNC) |
| Grip Length | 0.177 INCHES MINIMUM AND 0.197 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 |
|---|---|
| BACF34D4B3S | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 1920S4-3 | 5/9 Secondary reference U.S. Government activity |
| BACF34D4B3S | 5/2 Secondary reference U.S. Government activity |
| BACF34D4B3S | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-974-0582 is a Stud,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-974-0582 has 1 manufacturer part number on file: BACF34D4B3S (Howmet Global Fastening Systems Inc).
Key specifications for BACF34D4B3S: Drive Type: SOCKET; Material Accommodated Thickness: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK; Extension Length: 0.361 INCHES NOMINAL IN. 14 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.