The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-834-8340, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Southco Inc New York Div. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-834-8340 |
| Primary Part Number | 5RB300 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc New York Div |
| Status | ACTIVE |
| Head Length | 1.250 INCHES NOMINAL IN |
| Material Accommodated Thickness | 0.290 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Stud Head Height | 1.130 INCHES NOMINAL IN |
| Shank Neck Length | 0.405 INCHES NOMINAL IN |
| Turnlock Stud Head Style | LOOP ON BELL |
| Stud Shank Major Diameter | 0.290 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Grip Length | 0.560 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 |
|---|---|
| 5RB300 PRIMARY | Southco Inc New York Div (USA) |
| Reference | Meaning |
|---|---|
| 13217E3846-9 | 7/2 Vendor item drawing reference U.S. Government activity |
| G210958-6 | 5/9 Secondary reference U.S. Government activity |
| G210958 | 7/2 Vendor item drawing reference U.S. Government activity |
| G210958-6 | 5/9 Secondary reference American Telephone and Telegraph Co |
NSN 5325-00-834-8340 is a Stud,turnlock Fastener, manufactured by Southco Inc New York Div, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-834-8340 has 1 manufacturer part number on file: 5RB300 (Southco Inc New York Div).
Key specifications for 5RB300: Head Length: 1.250 INCHES NOMINAL IN; Material Accommodated Thickness: 0.290 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK; Stud Head Height: 1.130 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.