The Bolt,machine, cataloged under National Stock Number 5306-00-281-8921, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Department of the Air Force. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5306-00-281-8921 |
| Primary Part Number | 65-4-6 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Department of the Air Force |
| Status | CANCELLED |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Minimum Tensile Strength | 48000 POUNDS PER SQUARE INCH LBS |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Head Height | 0.172 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Width Between Flats | 0.375 INCHES NOMINAL IN |
| Features Provided | FINISHED HEAD |
| Thread Length | 0.500 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Thread Quantity Per Inch | 20 |
| Head Style | HEXAGON |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Grip Length | 0.250 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Material | STEEL OVERALL |
| Acquisition Status | CANCELLED |
| Successor | 6515-01-562-5644 (PA120) |
| HAZMAT | No |
NSN 5306-00-281-8921 is a Bolt,machine, manufactured by Department of the Air Force, classified under FSC 5306 (No Item Name Available). Status: cancelled.
NSN 5306-00-281-8921 has 2 cross-referenced part numbers: 65-4-6 (Department of the Air Force), AN65-4-6 (Aeronautical Standards Group Dept of Navy and Air Force).
There are 9 known substitutes for 5306-00-281-8921: 5306-00-857-6430, 6515-01-562-5644, 5120-00-247-5177 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 65-4-6: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Minimum Tensile Strength: 48000 POUNDS PER SQUARE INCH LBS; Fastener Length: 0.750 INCHES NOMINAL IN; Head Height: 0.172 INCHES NOMINAL IN. 15 total characteristics are documented in the Federal Logistics Information System.
NSN 5306-00-281-8921 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.