The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-00-574-6645, 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 Camloc Products. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-574-6645 |
| Primary Part Number | 4S15-10 |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc Div Camloc Products |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE EJECTOR SPRING |
| Surface Treatment Document and Classification | QQ-P-416,CL 2,TY 2 FED SPEC SINGLE TREATMENT RESPONSE EYELET |
| Surface Treatment Document and Classification | QQ-P-416,CL 2,TY 2 FED SPEC SINGLE TREATMENT RESPONSE STUD |
| Eyelet Outside Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Drive Type | CROSS RECESS |
| Material Accommodated Thickness | 0.358 INCHES MINIMUM AND 0.457 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5678 ASSN STD SINGLE MATERIAL RESPONSE EJECTOR SPRING |
| Material Document and Classification | MIL-S-6047 MIL SPEC 1ST MATERIAL RESPONSE OR ASTM 547 ASSN STD 2ND MATERIAL RESPONSE STUD |
| Material Document and Classification | STM A331 ASSN STD SINGLE MATERIAL RESPONSE EYELET |
| Diameter | 0.380 INCHES NOMINAL IN |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.839 INCHES MINIMUM AND 0.854 INCHES MAXIMUM IN |
| Turnlock Stud Head Style | FLAT COUNTERSUNK |
| Surface Treatment | CADMIUM AND CHROMATE STUD |
| Surface Treatment | CADMIUM AND CHROMATE EYELET |
| Surface Treatment | PASSIVATE EJECTOR SPRING |
| Material | STEEL CORROSION RESISTING EJECTOR SPRING |
| Material | STEEL COMP 4130 EYELET |
| Material | STEEL COMP 8740 OR STEEL COMP 4037 STUD |
| Stud Assembly Style | STUD ASSEMBLY |
| Eyelet Length | 0.474 INCHES MINIMUM AND 0.480 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 |
NSN 5325-00-574-6645 is a Stud Assembly,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc Div Camloc Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-574-6645 has 2 manufacturer part numbers on file: 4S15-10 (Fairchild Fasteners Europe - Camloc Gmbh), 4S15-10 (Howmet Global Fastening Systems Inc Div Camloc Products).
Key specifications for 4S15-10: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE EJECTOR SPRING; Surface Treatment Document and Classification: QQ-P-416,CL 2,TY 2 FED SPEC SINGLE TREATMENT RESPONSE EYELET; Surface Treatment Document and Classification: QQ-P-416,CL 2,TY 2 FED SPEC SINGLE TREATMENT RESPONSE STUD; Eyelet Outside Diameter: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN. 20 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.