The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-159-6640, 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 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-159-6640 |
| Primary Part Number | 122J-R665-Z3C |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Head Length | 1.031 INCHES MINIMUM AND 1.093 INCHES MAXIMUM IN |
| Drive Type | SLOTTED |
| Turnlock Stud Shank Style | STUD SHANK |
| Material Document and Classification | SAE COMP 2317 ASSN STD 1ST MATERIAL RESPONSE OR AISI ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Stud Head Height | 0.969 INCHES NOMINAL IN |
| Shank Neck Length | 0.315 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN |
| Securing Device Type | SPRING |
| Turnlock Stud Head Style | LOOP ON FLAT FILLISTER |
| Stud Shank Major Diameter | 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OR STEEL COMP 8620 OVERALL |
| Grip Length | 0.640 INCHES MINIMUM AND 0.660 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 |
|---|---|
| 122J-R665-Z3C PRIMARY | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| 9318119 | 7/2 Vendor item drawing reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| BJR6-65 | 5/9 Secondary reference Southco Inc |
NSN 5325-01-159-6640 is a Stud,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-159-6640 has 1 manufacturer part number on file: 122J-R665-Z3C (Southco Inc).
Key specifications for 122J-R665-Z3C: Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Head Length: 1.031 INCHES MINIMUM AND 1.093 INCHES MAXIMUM IN; Drive Type: SLOTTED; Turnlock Stud Shank Style: STUD SHANK. 13 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.