The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-925-9942, 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 19 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-925-9942 |
| Primary Part Number | CA1728-3 |
| 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 | SLOTTED |
| 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 | 0.380 INCHES NOMINAL IN |
| Stud Head Height | 0.562 INCHES NOMINAL IN |
| Securing Device Type | RING |
| Turnlock Stud Head Style | KNURLED |
| Stud Shank Major Diameter | 0.3730 INCHES MINIMUM AND 0.3745 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 |
|---|---|
| CA1728-3 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| M143-163 | Miltope Corporation (USA) |
| CA1728-3 | Fairchild Fasteners Europe - Camloc Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| 721602-11 | 7/2 Vendor item drawing reference Raytheon Company Div Rmd Strategic |
| 128-0115-002 | 5/2 Secondary reference U.S. Government activity |
NSN 5325-00-925-9942 is a Stud,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-925-9942 has 3 manufacturer part numbers on file: CA1728-3 (Howmet Global Fastening Systems Inc. Div Tridair Products), M143-163 (Miltope Corporation), CA1728-3 (Fairchild Fasteners Europe - Camloc Gmbh).
Key specifications for CA1728-3: 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: SLOTTED; Material Accommodated Thickness: 0.344 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN. 19 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.