The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-490-6543, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-490-6543 |
| Primary Part Number | 12422480 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Width Across Flats | 26.9 MILLIMETERS NOMINAL MM |
| Extended Washer Diameter | 29.0 MILLIMETERS MINIMUM AND 39.0 MILLIMETERS MAXIMUM MM |
| Turnlock Stud Shank Style | STUD SHANK |
| Material Document and Classification | ASTMA108GRADE12L17 ASSN STD 1ST MATERIAL RESPONSE OR ASTMA36 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Stud Head Height | 12.7 MILLIMETERS MINIMUM AND 13.7 MILLIMETERS MAXIMUM MM |
| Turnlock Stud Head Style | STUD HEAD |
| Stud Shank Major Diameter | 22.0 MILLIMETERS MINIMUM AND 22.6 MILLIMETERS MAXIMUM MM |
| Material | STEEL OVERALL |
| Grip Length | 86.0 MILLIMETERS MINIMUM AND 96.0 MILLIMETERS MAXIMUM MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5325-01-490-6543 is a Stud,turnlock Fastener, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-490-6543 has 3 manufacturer part numbers on file: 12422480 (Amz Alabama Inc.), 12422480 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 12422480 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12422480: Width Across Flats: 26.9 MILLIMETERS NOMINAL MM; Extended Washer Diameter: 29.0 MILLIMETERS MINIMUM AND 39.0 MILLIMETERS MAXIMUM MM; Turnlock Stud Shank Style: STUD SHANK; Material Document and Classification: ASTMA108GRADE12L17 ASSN STD 1ST MATERIAL RESPONSE OR ASTMA36 ASSN STD 2ND MATERIAL RESPONSE OVERALL. 9 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.