The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-079-2316, 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 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-079-2316 |
| Primary Part Number | M192012-4-4 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
| Status | ACTIVE |
| Drive Type | SOCKET |
| Turnlock Stud Shank Style | STUD SHANK |
| Extension Length | 0.3827 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.3464 INCHES MINIMUM AND 0.3553 INCHES MAXIMUM IN |
| Stud Head Height | 0.0194 INCHES MINIMUM AND 0.0240 INCHES MAXIMUM IN |
| Securing Device Type | RING |
| Turnlock Stud Head Style | FLAT FILLISTER |
| Stud Shank Major Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Stud Thread Size and Series/type Designator | 0.164-32 UNF |
| Grip Length | 0.2283 INCHES NOMINAL 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 |
|---|---|
| 192012-4-4 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| M192012-4-4 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| Reference | Meaning |
|---|---|
| 1926-4-4 | 5/9 Secondary reference U.S. Government activity |
| 3M303C4-4 | 5/2 Secondary reference U.S. Government activity |
| 1926-4-4 | 5/9 Secondary reference U.S. Government activity |
| 3M303C4-4 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 1926-4-4 | 5/9 Secondary reference U.S. Government activity |
| 3M303-4-4 | 5/9 Secondary reference The Boeing Company Div Defense |
| 1926-4-4 | 5/9 Secondary reference Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
NSN 5325-00-079-2316 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 5325-00-079-2316 has 2 manufacturer part numbers on file: 192012-4-4 (Howmet Global Fastening Systems Inc. Div Tridair Products), M192012-4-4 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok).
2 possible matches (shared part number, not a government interchangeability claim): 5985-00-902-0491, 5325-01-284-9794. Verify interchangeability with system specifications before substitution.
Key specifications for M192012-4-4: Drive Type: SOCKET; Turnlock Stud Shank Style: STUD SHANK; Extension Length: 0.3827 INCHES NOMINAL IN; Material Document and Classification: ASTM A286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.