The Receptacle,turnlock Fastener, cataloged under National Stock Number 5325-01-326-9587, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-326-9587 |
| Primary Part Number | 3M304-6-3-7 |
| Item Name | Receptacle,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Receptacle Overall Length | 1.295 INCHES MAXIMUM IN |
| Receptacle Thread Size and Series/type Designator | 0.250-28 UNF |
| 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 |
| Turnlock Receptacle Style | RECEPTACLE |
| Receptacle Width | 0.600 INCHES MAXIMUM IN |
| Turnlock Mounting Hole Diameter | 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 3M304-6-3-7 PRIMARY | The Boeing Company Div Defense (USA) |
| M1950-6-3-7 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| 195011B-6-3-7 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| Reference | Meaning |
|---|---|
| 195011B-6-3-7 | 5/9 Secondary reference U.S. Government activity |
| 10119358 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 195011B-6-3-7 | 5/2 Secondary reference U.S. Government activity |
NSN 5325-01-326-9587 is a Receptacle,turnlock Fastener, manufactured by The Boeing Company Div Defense, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-326-9587 has 3 manufacturer part numbers on file: 3M304-6-3-7 (The Boeing Company Div Defense), M1950-6-3-7 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), 195011B-6-3-7 (Howmet Global Fastening Systems Inc. Div Voi-Shan Products).
Key specifications for 3M304-6-3-7: Receptacle Overall Length: 1.295 INCHES MAXIMUM IN; Receptacle Thread Size and Series/type Designator: 0.250-28 UNF; 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. 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.