The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-073-7865, 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 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-073-7865 |
| Primary Part Number | 12271173 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.125 INCHES NOMINAL IN |
| Fastener Length | 0.600 INCHES NOMINAL IN |
| Thread Length | 0.290 INCHES NOMINAL IN |
| First Diameter From Head | 0.173 INCHES NOMINAL IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.375 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.327 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 12271173 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3-100-175-01 | 5/9 Secondary reference U.S. Government activity |
| 12286203 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 3-100-175-03 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-073-7865 is a Bolt,externally Relieved Body, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-073-7865 has 1 manufacturer part number on file: 12271173 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12271173: Head Height: 0.125 INCHES NOMINAL IN; Fastener Length: 0.600 INCHES NOMINAL IN; Thread Length: 0.290 INCHES NOMINAL IN; First Diameter From Head: 0.173 INCHES NOMINAL IN. 10 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.