The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-249-3768, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok. Government technical data includes 14 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-01-249-3768 |
| Primary Part Number | M01916-6K-6 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-83488,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Drive Type | SOCKET |
| Turnlock Stud Shank Style | STUD SHANK |
| Extension Length | 0.460 INCHES NOMINAL IN |
| Material Document and Classification | 23-107,CAGEC 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.503 INCHES NOMINAL IN |
| Stud Head Height | 0.050 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Securing Device Type | RING |
| Turnlock Stud Head Style | FLAT FILLISTER |
| Stud Shank Major Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Material | STEEL OVERALL |
| Stud Thread Size and Series/type Designator | 0.250-28 UNF |
| Grip Length | 0.370 INCHES MINIMUM AND 0.380 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 |
|---|---|
| M01916-6K-6 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| Reference | Meaning |
|---|---|
| MT154-6-6 | 3/2 Design control — primary reference U.S. Government activity |
| 01916-6K-6 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M783-6-6 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 01916-6K-6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-01-249-3768 is a Stud,turnlock Fastener, manufactured by Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-249-3768 has 1 manufacturer part number on file: M01916-6K-6 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok).
Key specifications for M01916-6K-6: Surface Treatment Document and Classification: MIL-C-83488,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Drive Type: SOCKET; Turnlock Stud Shank Style: STUD SHANK; Extension Length: 0.460 INCHES NOMINAL IN. 14 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.