The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-048-0127, 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-048-0127 |
| Primary Part Number | 2356-20-39-C3C |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,CLASS 2,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.361 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Material Document and Classification | SAE 2317 ASSN STD 1ST MATERIAL RESPONSE AND AISI 8620 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Diameter | 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Shank Neck Length | 0.450 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 1 TYPE AND ASSJCLB CLASS AND 1 STYLE AND 2 SIZE |
| Turnlock Stud Head Style | FLAT COUNTERSUNK |
| Stud Shank Major Diameter | 0.212 INCHES MINIMUM AND 0.217 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OR STEEL COMP 8620 OVERALL |
| Grip Length | 0.590 INCHES MINIMUM AND 0.610 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 |
|---|---|
| 2356-20-39-C3C PRIMARY | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| MIL-F-5591 | 5/9 Secondary reference U.S. Government activity |
| F31-2T37 | 5/9 Secondary reference Southco Inc |
| MIL-F-5591 | 5/9 Secondary reference U.S. Government activity |
| GS520C7-37 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| GS520C7-39 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| F3.5T39 | 5/9 Secondary reference Southco Inc |
| F35T39 | 5/9 Secondary reference Southco Inc |
| F3 1/2T37 | 5/9 Secondary reference Southco Inc |
NSN 5325-01-048-0127 is a Stud,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-048-0127 has 1 manufacturer part number on file: 2356-20-39-C3C (Southco Inc).
Key specifications for 2356-20-39-C3C: Surface Treatment Document and Classification: QQ-P-416,CLASS 2,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Drive Type: SLOTTED; Material Accommodated Thickness: 0.361 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN; 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.