The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-050-5063, 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 13 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-050-5063 |
| Primary Part Number | 3522-S42-C3C |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Eyelet Outside Diameter | 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.110 INCHES NOMINAL IN |
| Material Document and Classification | FED STD 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Diameter | 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.420 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FILLISTER |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1118 OVERALL |
| Stud Assembly Style | STUD ASSEMBLY |
| Stud Diameter | 0.212 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Eyelet Length | 0.253 INCHES MINIMUM AND 0.257 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 |
| Part Number | Manufacturer |
|---|---|
| 3522-S42-C3C PRIMARY | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| 21187-00220 | 5/9 Secondary reference Leonardo Mw Ltd |
| PVS 3 1/2-42 | 5/9 Secondary reference Southco Inc |
| PVS3 1-2-42 | C/1 Advisory reference — outside the item-of-supply concept Southco Inc |
| 012-0108-020 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| PV535-42 | 5/9 Secondary reference Southco Inc |
NSN 5325-01-050-5063 is a Stud Assembly,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-050-5063 has 1 manufacturer part number on file: 3522-S42-C3C (Southco Inc).
Key specifications for 3522-S42-C3C: Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL; Eyelet Outside Diameter: 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN; Drive Type: SLOTTED; Material Accommodated Thickness: 0.110 INCHES NOMINAL IN. 13 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.