The Receptacle,turnlock Fastener, cataloged under National Stock Number 5325-01-258-0901, 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 11 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-01-258-0901 |
| Primary Part Number | 3590-H320-AC1 |
| Item Name | Receptacle,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Receptacle Overall Length | 10.062 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-5541,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Center to Center Distance Between Mounting Holes | 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Mounting Style | PLAIN W/MOUNTING HOLE |
| Material Document and Classification | QQ-A-200/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Turnlock Receptacle Style | RECEPTACLE |
| Receptacle Width | 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN |
| Turnlock Mounting Hole Diameter | 0.128 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE OVERALL |
| Receptacle Height | 0.625 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 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 |
|---|---|
| 3590-H320-AC1 PRIMARY | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| PR3-1/2I4 | 5/9 Secondary reference Southco Inc |
| 110-045-27 | 5/9 Secondary reference U.S. Government activity |
| PR35I4 | 3/9 Design control — primary reference Southco Inc |
| PR35MCN | 5/9 Secondary reference Southco Inc |
NSN 5325-01-258-0901 is a Receptacle,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-258-0901 has 1 manufacturer part number on file: 3590-H320-AC1 (Southco Inc).
Key specifications for 3590-H320-AC1: Receptacle Overall Length: 10.062 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-5541,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Center to Center Distance Between Mounting Holes: 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN; Mounting Style: PLAIN W/MOUNTING HOLE. 11 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.