The Bolt,shoulder, cataloged under National Stock Number 5306-01-446-1975, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 17 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 | 5306-01-446-1975 |
| Primary Part Number | 12418540-001 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 4.0 MILLIMETERS NOMINAL MM |
| Fastener Length | 25.5 MILLIMETERS NOMINAL MM |
| Shoulder Length | 4.8 MILLIMETERS NOMINAL SECOND SHOULDER MM |
| Shoulder Length | 6.4 MILLIMETERS NOMINAL FIRST SHOULDER MM |
| Shoulder Diameter | 11.1 MILLIMETERS NOMINAL FIRST SHOULDER MM |
| Shoulder Diameter | 7.9 MILLIMETERS NOMINAL SECOND SHOULDER MM |
| Thread Length | 14.3 MILLIMETERS NOMINAL MM |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Material Document and Classification | ASTM A582, COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 17.4 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 |
| Part Number | Manufacturer |
|---|---|
| 12418540-001 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 12418540-001 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| 12418540-001 | Amz Alabama Inc. (USA) |
NSN 5306-01-446-1975 is a Bolt,shoulder, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-446-1975 has 3 manufacturer part numbers on file: 12418540-001 (U S Army Tank Automotive Command Amsta-Im-Mm), 12418540-001 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 12418540-001 (Amz Alabama Inc.).
Key specifications for 12418540-001: Head Height: 4.0 MILLIMETERS NOMINAL MM; Fastener Length: 25.5 MILLIMETERS NOMINAL MM; Shoulder Length: 4.8 MILLIMETERS NOMINAL SECOND SHOULDER MM; Shoulder Length: 6.4 MILLIMETERS NOMINAL FIRST SHOULDER MM. 17 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.