The Bolt,shoulder, cataloged under National Stock Number 5306-01-379-5092, 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 24 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-379-5092 |
| Primary Part Number | 12418221 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 12.95 MILLIMETERS MINIMUM AND 13.05 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 205.5 MILLIMETERS NOMINAL MM |
| Shoulder Length | 175.8 MILLIMETERS MINIMUM AND 178.2 MILLIMETERS MAXIMUM FIRST SHOULDER MM |
| Shoulder Length | 28.5 MILLIMETERS NOMINAL SECOND SHOULDER MM |
| Surface Treatment Document and Classification | VV-L-800 FED SPEC SINGLE TREATMENT RESPONSE THREADS |
| Shoulder Diameter | 13.8 MILLIMETERS MINIMUM AND 14.0 MILLIMETERS MAXIMUM SECOND SHOULDER MM |
| Shoulder Diameter | 17.89 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM FIRST SHOULDER MM |
| Thread Pitch in Millimeters | 1.5 |
| Thread Length | 28.0 MILLIMETERS MINIMUM AND 29.0 MILLIMETERS MAXIMUM MM |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Hole Configuration Style | ROUND |
| Material Document and Classification | ASTM A193 GR B7 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 18.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 33.0 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC FASTENER |
| Surface Treatment | OIL THREADS |
| Material | STEEL COMP 4140 OR STEEL COMP 4142 OR STEEL COMP 4145 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | M |
| Hole Type | DRILLED |
| Hole Diameter | 1.3 MILLIMETERS MINIMUM AND 1.7 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 |
| Part Number | Manufacturer |
|---|---|
| 12418221 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12418221 | 5/9 Secondary reference Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc |
NSN 5306-01-379-5092 is a Bolt,shoulder, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-379-5092 has 1 manufacturer part number on file: 12418221 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12418221: Head Height: 12.95 MILLIMETERS MINIMUM AND 13.05 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Fastener Length: 205.5 MILLIMETERS NOMINAL MM; Shoulder Length: 175.8 MILLIMETERS MINIMUM AND 178.2 MILLIMETERS MAXIMUM FIRST SHOULDER MM. 24 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.