The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-110-0115, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-110-0115 |
| Primary Part Number | D7500-4-A-3 |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD |
| Surface Treatment Document and Classification | MIL-A-8625 TY1 CL1 MIL SPEC SINGLE TREATMENT RESPONSE HEAD |
| Surface Treatment Document and Classification | MIL-A-8625 TY1 CL1 MIL SPEC SINGLE TREATMENT RESPONSE RECEPTACLE |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.313 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE HEAD |
| Material Document and Classification | AST-493 300 SERIES ASSN STD SINGLE MATERIAL RESPONSE STUD |
| Material Document and Classification | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE RECEPTACLE |
| Diameter | 0.325 INCHES NOMINAL IN |
| Stud Head Height | 0.270 INCHES NOMINAL IN |
| Securing Device Type | SPRING |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.764 INCHES NOMINAL IN |
| Turnlock Stud Head Style | KNURLED |
| Surface Treatment | PASSIVATE STUD |
| Surface Treatment | ANODIZE HEAD |
| Surface Treatment | ANODIZE RECEPTACLE |
| Material | STEEL CORROSION RESISTING STUD |
| Material | ALUMINUM ALLOY 6061 RECEPTACLE |
| Material | ALUMINUM ALLOY 6061 HEAD |
| Stud Thread Size and Series/type Designator | 0.112-40 UNIFIED NATIONAL COARSE (UNC) |
| Stud Diameter | 0.177 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 |
|---|---|
| D7500-4-A-3 PRIMARY | Huck International, Inc (USA) |
| D7500-4-A-3 PRIMARY | Huck International, Inc. Div Huck Products Division (USA) |
| Reference | Meaning |
|---|---|
| D7500-4-A-3 | 5/9 Secondary reference U.S. Government activity |
NSN 5325-01-110-0115 is a Stud Assembly,turnlock Fastener, manufactured by Huck International, Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-110-0115 has 2 manufacturer part numbers on file: D7500-4-A-3 (Huck International, Inc), D7500-4-A-3 (Huck International, Inc. Div Huck Products Division).
Key specifications for D7500-4-A-3: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD; Surface Treatment Document and Classification: MIL-A-8625 TY1 CL1 MIL SPEC SINGLE TREATMENT RESPONSE HEAD; Surface Treatment Document and Classification: MIL-A-8625 TY1 CL1 MIL SPEC SINGLE TREATMENT RESPONSE RECEPTACLE; Drive Type: SLOTTED. 21 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.