The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-133-7341, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-133-7341 |
| Primary Part Number | CA20018-6 |
| 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 | 0.187 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Drive Type | SOCKET |
| Turnlock Stud Shank Style | STUD SHANK |
| Extension Length | 0.125 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-81506,COMP 17-4PH MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Stud Head Height | 0.187 INCHES NOMINAL IN |
| Turnlock Stud Head Style | STUD HEAD |
| Stud Shank Major Diameter | 0.184 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Stud Thread Size and Series/type Designator | 0.112-40 UNIFIED NATIONAL COARSE (UNC) |
| Grip Length | 0.428 INCHES MINIMUM AND 0.500 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 |
|---|---|
| CA20018-6 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| 951352-2 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
NSN 5325-01-133-7341 is a Stud,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-133-7341 has 1 manufacturer part number on file: CA20018-6 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for CA20018-6: Width Across Flats: 0.187 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Extended Washer Diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN; Drive Type: SOCKET. 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.