The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-408-4101, 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 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-408-4101 |
| Primary Part Number | 2351-W20-27D-C3Y |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TY2, CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Head Length | 0.865 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Material Accommodated Thickness | 0.241 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Stud Head Height | 0.282 INCHES MINIMUM AND 0.342 INCHES MAXIMUM IN |
| Shank Neck Length | 0.360 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Turnlock Stud Head Style | FILLISTER WING |
| Stud Shank Major Diameter | 0.212 INCHES MINIMUM AND 0.217 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL OVERALL |
| Grip Length | 0.490 INCHES MINIMUM AND 0.510 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 |
|---|---|
| 2351-W20-27D-C3Y PRIMARY | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| AW35T25DCBY | 5/9 Secondary reference Southco Inc. |
| 50-007W27 | 7/2 Vendor item drawing reference U.S. Government activity |
| AW35T27CBY | 5/9 Secondary reference Southco Inc |
NSN 5325-01-408-4101 is a Stud,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-408-4101 has 1 manufacturer part number on file: 2351-W20-27D-C3Y (Southco Inc).
Key specifications for 2351-W20-27D-C3Y: Surface Treatment Document and Classification: QQ-P-416, TY2, CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Head Length: 0.865 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN; Material Accommodated Thickness: 0.241 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK. 11 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.