The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-281-5099, 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 10 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-281-5099 |
| Primary Part Number | 121J-470-Z3C |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.520 INCHES MINIMUM AND 0.545 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Diameter | 0.437 INCHES NOMINAL IN |
| Shank Neck Length | 0.350 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FILLISTER |
| Stud Shank Major Diameter | 0.250 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Grip Length | 0.700 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-470-Z3C PRIMARY | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| AJ4-70 | 5/9 Secondary reference Southco Inc |
| 7415015008 | 5/2 Secondary reference U.S. Government activity |
| AJ4-65 | C/1 Advisory reference — outside the item-of-supply concept Southco Inc |
| AJ4-70-ZBC | 5/9 Secondary reference Southco Inc |
NSN 5325-00-281-5099 is a Stud,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-281-5099 has 1 manufacturer part number on file: 121J-470-Z3C (Southco Inc).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-247-9443. Verify interchangeability with system specifications before substitution.
Key specifications for 121J-470-Z3C: Drive Type: SLOTTED; Material Accommodated Thickness: 0.520 INCHES MINIMUM AND 0.545 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK; Diameter: 0.437 INCHES NOMINAL IN. 10 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.