The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-271-5201, 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 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-271-5201 |
| Primary Part Number | 3506-SC44A-B0C |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Eyelet Outside Diameter | 0.253 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.125 INCHES NOMINAL IN |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE EJECTOR SPRING |
| Diameter | 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Stud Head Height | 0.285 INCHES NOMINAL IN |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.380 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FLAT FILLISTER |
| Surface Treatment | OXIDE FILM OVERALL |
| Material | STEEL STUD |
| Material | STEEL EJECTOR SPRING |
| Material | STEEL COMP 1010 OR STEEL COMP 1118 EYELET |
| Stud Assembly Style | STUD ASSEMBLY |
| Stud Diameter | 0.212 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Eyelet Length | 0.140 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 |
|---|---|
| 3506-SC44A-B0C | Southco Inc (USA) |
| D5-PFSC35-44ARBNA | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| ES764B06 | 3/2 Design control — primary reference U.S. Government activity |
| PFSC3-1/2-44ARBO | 5/9 Secondary reference Southco Inc |
| ES764B06 | 3/9 Design control — primary reference Drs Sustainment Systems, Inc. |
NSN 5325-01-271-5201 is a Stud Assembly,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-271-5201 has 2 manufacturer part numbers on file: 3506-SC44A-B0C (Southco Inc), D5-PFSC35-44ARBNA (Southco Inc).
Key specifications for 3506-SC44A-B0C: Eyelet Outside Diameter: 0.253 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN; Drive Type: SLOTTED; Material Accommodated Thickness: 0.125 INCHES NOMINAL IN; Material Document and Classification: QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE EJECTOR SPRING. 15 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.