The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-157-4887, 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 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-157-4887 |
| Primary Part Number | 121J-W445-SS |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Head Length | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Material Accommodated Thickness | 0.240 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Stud Head Height | 0.312 INCHES NOMINAL IN |
| Shank Neck Length | 0.215 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN |
| Securing Device Type | SPRING |
| Turnlock Stud Head Style | FILLISTER WING |
| Stud Shank Major Diameter | 0.250 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Grip Length | 0.440 INCHES MINIMUM AND 0.460 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 |
|---|---|
| 121J-W445-SS PRIMARY | Southco Inc (USA) |
| 23349-0041 | Bae Systems Information & Electronic Systems Integration Inc. (USA) |
| Reference | Meaning |
|---|---|
| AJW4-45SS | 5/9 Secondary reference Southco Inc |
NSN 5325-01-157-4887 is a Stud,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-157-4887 has 2 manufacturer part numbers on file: 121J-W445-SS (Southco Inc), 23349-0041 (Bae Systems Information & Electronic Systems Integration Inc.).
Key specifications for 121J-W445-SS: Head Length: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN; Material Accommodated Thickness: 0.240 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK; Stud Head Height: 0.312 INCHES NOMINAL IN. 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.