The Bolt,machine, cataloged under National Stock Number 5306-00-720-8481, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-720-8481 |
| Primary Part Number | 9172251 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Head Height | 0.156 INCHES NOMINAL IN |
| Fastener Length | 8.750 INCHES NOMINAL IN |
| Thread Length | 0.750 INCHES MINIMUM IN |
| Material Document and Classification | QQ-S-764 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 8.000 INCHES NOMINAL IN |
| Width Between Flats | 0.438 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 9172251 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 416-20-8750 | 5/9 Secondary reference All Stainless, Inc. |
NSN 5306-00-720-8481 is a Bolt,machine, manufactured by Us Army Aviation and Missile Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-720-8481 has 1 manufacturer part number on file: 9172251 (Us Army Aviation and Missile Command).
Key specifications for 9172251: Head Height: 0.156 INCHES NOMINAL IN; Fastener Length: 8.750 INCHES NOMINAL IN; Thread Length: 0.750 INCHES MINIMUM IN; Material Document and Classification: QQ-S-764 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 15 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.