The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-443-6439, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-01-443-6439 |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35, TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Eyelet Outside Diameter | 0.273 INCHES MINIMUM AND 0.283 INCHES MAXIMUM IN |
| Drive Type | KNURLED OR SLOTTED |
| Material Accommodated Thickness | 0.273 INCHES MINIMUM AND 0.283 INCHES MAXIMUM IN |
| Diameter | 0.324 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN |
| Stud Head Height | 0.066 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN |
| Securing Device Type | SPRING |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.420 INCHES NOMINAL IN |
| Turnlock Stud Head Style | KNURLED |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL |
| Stud Thread Size and Series/type Designator | 0.138-32 UNIFIED NATIONAL COARSE (UNC) |
| Stud Assembly Style | STUD ASSEMBLY |
| Eyelet Length | 0.270 INCHES MINIMUM AND 0.310 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 |
| Reference | Meaning |
|---|---|
| PFC2-632-06 | 3/9 Design control — primary reference Penn Engineering & Manufacturing Corp |
| 77C956857P15 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rms |
NSN 5325-01-443-6439 is a Stud Assembly,turnlock Fastener, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-01-443-6439: Surface Treatment Document and Classification: QQ-P-35, TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Eyelet Outside Diameter: 0.273 INCHES MINIMUM AND 0.283 INCHES MAXIMUM IN; Drive Type: KNURLED OR SLOTTED; Material Accommodated Thickness: 0.273 INCHES MINIMUM AND 0.283 INCHES MAXIMUM IN. 14 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.