The Receptacle,turnlock Fastener, cataloged under National Stock Number 5325-00-721-4239, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Voi-Shan Products. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-721-4239 |
| Primary Part Number | 3M304-6-12-2 |
| Item Name | Receptacle,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Voi-Shan Products |
| Status | ACTIVE |
| Receptacle Overall Length | 1.295 INCHES MAXIMUM IN |
| Receptacle Thread Size and Series/type Designator | UNJF0.250-28 |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Center to Center Distance Between Mounting Holes | 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Mounting Style | PLAIN W/MOUNTING HOLE |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE BARREL |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE STUD |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE RETAINER |
| Turnlock Receptacle Style | RECEPTACLE |
| Receptacle Width | 0.600 INCHES MAXIMUM IN |
| Turnlock Mounting Hole Diameter | 0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Receptacle Height | 0.896 INCHES MAXIMUM IN |
| Material | STEEL COMP 8740 BARREL |
| Material | STEEL COMP 1050 RETAINER |
| Material | STEEL COMP 8740 STUD |
| 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 |
|---|---|
| M1950-6-12-2 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| 3M304-6-12-2 PRIMARY | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 3M304-6-12-2 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| Reference | Meaning |
|---|---|
| PAF50-6-12-2 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| PAF50-6-12-2 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 195011B-6-12-2 | 5/2 Secondary reference U.S. Government activity |
| 3M304-6-12-2 | 3/2 Design control — primary reference U.S. Government activity |
| 1950-6-12-2 | 5/9 Secondary reference U.S. Government activity |
| 3M304-6-12-2 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 1950-6-12-2 | 5/9 Secondary reference U.S. Government activity |
| 3M304-6-12-2 | 3/2 Design control — primary reference U.S. Government activity |
| 195011B-6-12-2 | 5/2 Secondary reference U.S. Government activity |
NSN 5325-00-721-4239 is a Receptacle,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Voi-Shan Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-721-4239 has 3 manufacturer part numbers on file: M1950-6-12-2 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), 3M304-6-12-2 (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), 3M304-6-12-2 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok).
Key specifications for 3M304-6-12-2: Receptacle Overall Length: 1.295 INCHES MAXIMUM IN; Receptacle Thread Size and Series/type Designator: UNJF0.250-28; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Center to Center Distance Between Mounting Holes: 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN. 16 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.