The Stud,turnbutton Fastener, cataloged under National Stock Number 5325-01-534-9278, 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 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-534-9278 |
| Primary Part Number | PFSC 3 1/2-38 AIB |
| Item Name | Stud,turnbutton Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TY 1, CL 2 CLEAR FED SPEC SINGLE TREATMENT RESPONSE STUD |
| Material | STEEL STUD |
| 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 |
|---|---|
| PFSC 3 1/2-38 AIB PRIMARY | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| 10377366 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5325-01-534-9278 is a Stud,turnbutton Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-534-9278 has 1 manufacturer part number on file: PFSC 3 1/2-38 AIB (Southco Inc).
Key specifications for PFSC 3 1/2-38 AIB: Surface Treatment Document and Classification: QQ-P-416, TY 1, CL 2 CLEAR FED SPEC SINGLE TREATMENT RESPONSE STUD; Special Features: STUD LOCKING ACTION COMPRESSES THE APRING, EXERTING A CLAMPING FORCE ONTHE FASTENED PARTS. STUD SPIRAL CAM ENGAGES A RIGID WIRE; Material: STEEL STUD. 2 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.