The Stud,positive Lock, cataloged under National Stock Number 5325-01-442-3597, 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 11 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 | 5325-01-442-3597 |
| Primary Part Number | 12420839 |
| Item Name | Stud,positive Lock |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Undercut Length | 4.0 MILLIMETERS NOMINAL MM |
| Positive Lock Stud Shank Style | STUD SHANK |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD |
| Major Diameter Length | 4.4 MILLIMETERS NOMINAL MM |
| Material Document and Classification | ASTMA582 ASSN STD SINGLE MATERIAL RESPONSE STUD |
| Surface Treatment | PASSIVATE STUD |
| Material | STEEL COMP 303 STUD |
| Stud Shank Overall Height | 10.8 MILLIMETERS NOMINAL MM |
| Positive Lock Stud Head Style | STUD HEAD |
| Head Diameter | 17.5 MILLIMETERS NOMINAL MM |
| Shank Major Diameter | 98.0 MILLIMETERS NOMINAL 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 5325-01-442-3597 is a Stud,positive Lock, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-442-3597 has 3 manufacturer part numbers on file: 12420839 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 12420839 (U S Army Tank Automotive Command Amsta-Im-Mm), 12420839 (Amz Alabama Inc.).
Key specifications for 12420839: Undercut Length: 4.0 MILLIMETERS NOMINAL MM; Positive Lock Stud Shank Style: STUD SHANK; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD; Major Diameter Length: 4.4 MILLIMETERS NOMINAL MM. 11 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.