The Bolt,shoulder, cataloged under National Stock Number 5306-01-449-0510, 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 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-449-0510 |
| Primary Part Number | 12340259-12 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Extended Washer Thickness | 0.070 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN |
| Head Height | 0.306 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Fastener Length | 1.050 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN |
| Shoulder Length | 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | ASTM B633 FE/ZN 5 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.850 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.850 INCHES MINIMUM AND 0.890 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.840 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | SAE J429 GRADE 8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.4375 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.698 INCHES MINIMUM AND 0.722 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 12340259-12 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5306PL1943534 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5306-01-449-0510 is a Bolt,shoulder, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-449-0510 has 1 manufacturer part number on file: 12340259-12 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12340259-12: Extended Washer Thickness: 0.070 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN; Head Height: 0.306 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN; Fastener Length: 1.050 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN; Shoulder Length: 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM FIRST SHOULDER IN. 19 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.