The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-838-6989, 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 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-838-6989 |
| Primary Part Number | 121J-330-SS |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.140 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Diameter | 0.312 INCHES NOMINAL IN |
| Shank Neck Length | 0.100 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FILLISTER |
| Stud Shank Major Diameter | 0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Material | STEEL COMP 303 OVERALL |
| Grip Length | 0.300 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 |
|---|---|
| 121J-330-SS PRIMARY | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| 019318-003 | 5/9 Secondary reference Sci Technology, Inc |
| 70-802401-2 | C/1 Advisory reference — outside the item-of-supply concept General Dynamics Advanced Information Systems Inc. Dba General Dynamics Advanced Information Systems |
| L323008006 | 5/1 Secondary reference Lockheed Martin Librascope Corporation |
| AJ3-30SS | 3/9 Design control — primary reference Southco Inc |
NSN 5325-00-838-6989 is a Stud,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-838-6989 has 1 manufacturer part number on file: 121J-330-SS (Southco Inc).
Key specifications for 121J-330-SS: Drive Type: SLOTTED; Material Accommodated Thickness: 0.140 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK; Diameter: 0.312 INCHES NOMINAL IN. 9 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.