The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-499-1509, 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 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-499-1509 |
| Primary Part Number | CA18112-4TS |
| 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-416,TY 2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Drive Type | TORQUE SET |
| Turnlock Stud Shank Style | STUD SHANK |
| Extension Length | 0.210 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Diameter | 0.329 INCHES MINIMUM IN |
| Turnlock Stud Head Style | FLAT COUNTERSUNK |
| Stud Shank Major Diameter | 0.2470 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minor Diameter | 0.221 INCHES NOMINAL IN |
| Material | STEEL COMP 4140 OR STEEL COMP 8740 OVERALL |
| Stud Thread Size and Series/type Designator | 0.164-32-3B UNIFIED NATIONAL COARSE (UNC) |
| Grip Length | 0.361 INCHES MINIMUM AND 0.430 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 |
|---|---|
| CA18112-4TS PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| CA18112-4TS | Avic Cabin Systems (uk) Limited (GBR) |
| Reference | Meaning |
|---|---|
| 5325PL1995332 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5325PL2089556 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 10158293 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5325-01-499-1509 is a Stud,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-499-1509 has 2 manufacturer part numbers on file: CA18112-4TS (Howmet Global Fastening Systems Inc. Div Tridair Products), CA18112-4TS (Avic Cabin Systems (uk) Limited).
Key specifications for CA18112-4TS: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Drive Type: TORQUE SET; Turnlock Stud Shank Style: STUD SHANK; Extension Length: 0.210 INCHES NOMINAL IN. 13 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.