The Bolt,eccentric Head, cataloged under National Stock Number 5306-00-256-5540, 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 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-256-5540 |
| Primary Part Number | 8705443 |
| Item Name | Bolt,eccentric Head |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.160 INCHES NOMINAL IN |
| Fastener Length | 1.320 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Hardness Rating | 83.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 90.2 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL |
| Distance From Center of Head to Center of Shank | 0.060 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Features Provided | CASEHARDENED |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.750 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| 8705443 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5306-00-256-5540 is a Bolt,eccentric Head, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-256-5540 has 1 manufacturer part number on file: 8705443 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8705443: Head Height: 0.160 INCHES NOMINAL IN; Fastener Length: 1.320 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL; Hardness Rating: 83.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 90.2 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL. 16 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.