The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-058-4376, 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 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-058-4376 |
| Primary Part Number | CA18161-3HS |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE RECEPTACLE |
| Drive Type | SOCKET |
| Turnlock Stud Shank Style | STUD SHANK |
| Extension Length | 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN |
| Diameter | 0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN |
| Securing Device Type | RING |
| Turnlock Stud Head Style | FILLISTER |
| Stud Shank Major Diameter | 0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE STUD |
| Surface Treatment | ANODIZE RECEPTACLE |
| Minor Diameter | 0.221 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING STUD |
| Material | ALUMINUM ALLOY 7075 RECEPTACLE |
| Stud Thread Size and Series/type Designator | 0.164-32 UNIFIED NATIONAL COARSE (UNC) |
| Grip Length | 0.291 INCHES MINIMUM AND 0.330 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 |
|---|---|
| CA18161-3HS PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| CA18161-3HS | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 7591031P4 | 5/9 Secondary reference U.S. Government activity |
| CA18161-3- | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc. Div Tridair Products |
| 7591031P0004 | 5/9 Secondary reference U.S. Government activity |
NSN 5325-01-058-4376 is a Stud,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-058-4376 has 1 manufacturer part number on file: CA18161-3HS (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for CA18161-3HS: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE RECEPTACLE; Drive Type: SOCKET; Turnlock Stud Shank Style: STUD SHANK. 16 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.