The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-178-8670, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-178-8670 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-87115 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Head Length | 0.859 INCHES MINIMUM AND 0.891 INCHES MAXIMUM IN |
| Material Accommodated Thickness | 0.190 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Stud Head Height | 0.422 INCHES MINIMUM AND 0.454 INCHES MAXIMUM IN |
| Shank Neck Length | 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN |
| Securing Device Type | RING |
| Turnlock Stud Head Style | FILLISTER WING |
| Stud Shank Major Diameter | 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Material | STEEL OVERALL |
| Grip Length | 0.335 INCHES MINIMUM AND 0.355 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 |
| Reference | Meaning |
|---|---|
| 419914-7 | 5/9 Secondary reference U.S. Government activity |
| 82-12-200-16 | 5/9 Secondary reference U.S. Government activity |
| 82-12-200-17 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-178-8670 is a Stud,turnlock Fastener, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-00-178-8670: Surface Treatment Document and Classification: MIL-C-87115 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Head Length: 0.859 INCHES MINIMUM AND 0.891 INCHES MAXIMUM IN; Material Accommodated Thickness: 0.190 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK. 12 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.