The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-425-5221, 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 4 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-00-425-5221 |
| Primary Part Number | CA30023-4-9 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Stud Shank Major Diameter | 0.228 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Grip Length | 1.562 INCHES NOMINAL 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 |
|---|---|
| CA30023-4-9 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| CS5017-4-9 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| Reference | Meaning |
|---|---|
| AVL275-9 | 5/2 Secondary reference U.S. Government activity |
| ST3M591-4-9 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5325-00-425-5221 is a Stud,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-425-5221 has 2 manufacturer part numbers on file: CA30023-4-9 (Howmet Global Fastening Systems Inc. Div Tridair Products), CS5017-4-9 (Fastener Innovation Technology, Inc. Dba F I T).
Key specifications for CA30023-4-9: Stud Shank Major Diameter: 0.228 INCHES NOMINAL IN; Special Features: 0.250-28 UNF 3A THD A; Surface Treatment: PASSIVATE OVERALL; Material: STEEL CORROSION RESISTING OVERALL. 4 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.