The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-138-5576, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-01-138-5576 |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Eyelet Outside Diameter | 0.516 INCHES NOMINAL IN |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.156 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Diameter | 0.750 INCHES NOMINAL IN |
| Stud Head Height | 0.250 INCHES NOMINAL IN |
| Distance From Engaging Member to Largest Bearing Surface of Head | 1.125 INCHES NOMINAL IN |
| Turnlock Stud Head Style | KNURLED |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Stud Thread Size and Series/type Designator | 0.250-20 UNIFIED NATIONAL COARSE (UNC) |
| Eyelet Length | 0.625 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 |
|---|---|
| 53-11-312-24 | 3/2 Design control — primary reference U.S. Government activity |
| PC91011-135 | 7/2 Vendor item drawing reference Rockwell Collins, Inc. Dba Rc Displays Systems |
NSN 5325-01-138-5576 is a Stud Assembly,turnlock Fastener, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-01-138-5576: Eyelet Outside Diameter: 0.516 INCHES NOMINAL IN; Drive Type: SLOTTED; Material Accommodated Thickness: 0.156 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN; Diameter: 0.750 INCHES NOMINAL IN. 11 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.