The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-524-9378, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-524-9378 |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TY II, CL 2 FED SPEC SINGLE TREATMENT RESPONSE STUD |
| Eyelet Outside Diameter | 0.246 INCHES NOMINAL IN |
| Drive Type | CROSS RECESS |
| Material Accommodated Thickness | 0.360 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 6300 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A108 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A108 ASSN STD 3RD MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 4TH MATERIAL RESPONSE STUD |
| Diameter | 0.500 INCHES NOMINAL IN |
| Securing Device Type | WASHER |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.870 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FILLISTER |
| Surface Treatment | CADMIUM STUD |
| Material | STEEL COMP 4037 OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 8740 STUD |
| Stud Assembly Style | STUD ASSEMBLY |
| Eyelet Length | 0.320 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 |
| Reference | Meaning |
|---|---|
| BACS21EE13R | 3/2 Design control — primary reference U.S. Government activity |
| BACS21Y13R | 5/9 Secondary reference U.S. Government activity |
NSN 5325-01-524-9378 is a Stud Assembly,turnlock Fastener, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-01-524-9378: Surface Treatment Document and Classification: QQ-P-416, TY II, CL 2 FED SPEC SINGLE TREATMENT RESPONSE STUD; Eyelet Outside Diameter: 0.246 INCHES NOMINAL IN; Drive Type: CROSS RECESS; Material Accommodated Thickness: 0.360 INCHES MINIMUM AND 0.389 INCHES MAXIMUM 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.