The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-534-8940, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-534-8940 |
| Primary Part Number | 579R728H14 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.222 INCHES NOMINAL IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Material Document and Classification | QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE STUD |
| Diameter | 0.300 INCHES NOMINAL IN |
| Securing Device Type | SPRING |
| Turnlock Stud Head Style | FILLISTER |
| Stud Shank Major Diameter | 0.125 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE STUD |
| Material | STEEL COMP 302 STUD |
| Grip Length | 0.295 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 |
|---|---|
| 579R728H14 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| 579R728H14 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5325-01-534-8940 is a Stud,turnlock Fastener, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-534-8940 has 1 manufacturer part number on file: 579R728H14 (Northrop Grumman Support Services Corp).
Key specifications for 579R728H14: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD; Drive Type: SLOTTED; Material Accommodated Thickness: 0.222 INCHES NOMINAL IN; Turnlock Stud Shank Style: STUD SHANK. 12 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.