The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-578-4089, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Southco Inc. Government technical data includes 9 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 | 5325-01-578-4089 |
| Primary Part Number | 121J-W335-Z3B |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Head Length | 16.0 MILLIMETERS NOMINAL MM |
| Turnlock Stud Shank Style | STUD SHANK |
| Stud Head Height | 6.3 MILLIMETERS NOMINAL MM |
| Turnlock Stud Head Style | FILLISTER WING |
| Stud Shank Major Diameter | 4.7 MILLIMETERS NOMINAL MM |
| Minor Diameter Length | 4.4 MILLIMETERS NOMINAL MM |
| Minor Diameter | 3.8 MILLIMETERS NOMINAL MM |
| Material | STEEL COMP 303 OVERALL |
| Grip Length | 8.8 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 121J-W335-Z3B PRIMARY | Southco Inc (USA) |
NSN 5325-01-578-4089 is a Stud,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-578-4089 has 1 manufacturer part number on file: 121J-W335-Z3B (Southco Inc).
Key specifications for 121J-W335-Z3B: Head Length: 16.0 MILLIMETERS NOMINAL MM; Turnlock Stud Shank Style: STUD SHANK; Stud Head Height: 6.3 MILLIMETERS NOMINAL MM; Turnlock Stud Head Style: FILLISTER WING. 9 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.