The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-00-033-8409, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-033-8409 |
| Primary Part Number | P521825-632-2 |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE EYELET |
| Eyelet Outside Diameter | 0.370 INCHES NOMINAL IN |
| Drive Type | SLOTTED |
| Material Document and Classification | ASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE RETAINER |
| Material Document and Classification | MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE STUD |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE EYELET |
| Diameter | 0.215 INCHES NOMINAL IN |
| Stud Head Height | 0.075 INCHES NOMINAL IN |
| Distance From Stud End to Largest Bearing Surface of Eyelet | 0.562 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Turnlock Stud Head Style | STUD HEAD |
| Surface Treatment | CADMIUM LOCKSPRING |
| Surface Treatment | CADMIUM STUD |
| Surface Treatment | CADMIUM RETAINER |
| Surface Treatment | PASSIVATE EYELET |
| Material | COPPER ALLOY LOCKSPRING |
| Material | STEEL COMP 302 EYELET |
| Material | STEEL COMP 4130 OR STEEL COMP 4140 RETAINER |
| Material | STEEL COMP 4130 OR STEEL COMP 4140 STUD |
| Stud Thread Size and Series/type Designator | 0.138-32 UNIFIED NATIONAL COARSE (UNC) |
| Stud Assembly Style | STUD ASSEMBLY |
| Eyelet Length | 0.303 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 |
|---|---|
| P521825-632-2 PRIMARY | Hi-Shear Corporation (USA) |
NSN 5325-00-033-8409 is a Stud Assembly,turnlock Fastener, manufactured by Hi-Shear Corporation, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-033-8409 has 1 manufacturer part number on file: P521825-632-2 (Hi-Shear Corporation).
Key specifications for P521825-632-2: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE EYELET; Eyelet Outside Diameter: 0.370 INCHES NOMINAL IN; Drive Type: SLOTTED; Material Document and Classification: ASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE RETAINER. 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.