The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-243-7371, 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 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-243-7371 |
| Primary Part Number | CA1733-3 |
| 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,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE BARREL |
| Drive Type | SOCKET |
| Material Accommodated Thickness | 0.344 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Extension Length | 0.190 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE STUD |
| Material Document and Classification | QQ-A-200/8,T6 FED SPEC SINGLE MATERIAL RESPONSE BARREL |
| Diameter | 0.615 INCHES NOMINAL IN |
| Securing Device Type | RING |
| Turnlock Stud Head Style | FILLISTER |
| Stud Shank Major Diameter | 0.373 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE BARREL |
| Surface Treatment | PASSIVATE STUD |
| Material | STEEL CORROSION RESISTING STUD |
| Material | ALUMINUM ALLOY 6061 BARREL |
| Stud Thread Size and Series/type Designator | 0.190-32 UNF |
| Grip Length | 0.344 INCHES MINIMUM AND 0.437 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 |
|---|---|
| CA1733-3 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| 5223431-2 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 721602-41 | 7/2 Vendor item drawing reference Raytheon Company Div Rmd Strategic |
NSN 5325-01-243-7371 is a Stud,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-243-7371 has 1 manufacturer part number on file: CA1733-3 (Howmet Global Fastening Systems Inc. Div Tridair Products).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-439-7558. Verify interchangeability with system specifications before substitution.
Key specifications for CA1733-3: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD; Surface Treatment Document and Classification: MIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE BARREL; Drive Type: SOCKET; Material Accommodated Thickness: 0.344 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN. 18 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.