The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-144-3983, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5306-00-144-3983 |
| Primary Part Number | NASM6812 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Federal Specifications Promulgated by General Services Administration Washington DC |
| Status | CANCELLED |
| Shank Unthreaded Hole Diameter | 0.106 INCHES NOMINAL FIRST HOLE IN |
| Fastener Length | 1.578 INCHES NOMINAL IN |
| Head Height | 0.203 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 24 |
| Surface Finish | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| Thread Series Designator | UNF |
| Material | STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4140 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
| Head Style | HEXAGON |
| Grip Diameter | 0.3737 INCHES MINIMUM AND 0.3742 INCHES MAXIMUM IN |
| Surface Finish | 63.0 MICROINCHES GRIP |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Grip Length | 0.938 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Surface Treatment Document and Classification | QQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Class | 3A A |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.376 INCHES NOMINAL FIRST HOLE IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| NASM6812 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| B6812 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| AN176-14 | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
NSN 5306-00-144-3983 is a Bolt,close Tolerance, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5306 (No Item Name Available). Status: cancelled.
NSN 5306-00-144-3983 has 3 cross-referenced part numbers: NASM6812 (Federal Specifications Promulgated by General Services Administration Washington DC), B6812 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AN176-14 (Aeronautical Standards Group Dept of Navy and Air Force).
There are 12 known substitutes for 5306-00-144-3983: 5306-00-550-3413, 5306-00-141-4507, 5306-00-151-1062 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for NASM6812: Shank Unthreaded Hole Diameter: 0.106 INCHES NOMINAL FIRST HOLE IN; Fastener Length: 1.578 INCHES NOMINAL IN; Head Height: 0.203 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN; Thread Quantity Per Inch: 24. 20 total characteristics are documented in the Federal Logistics Information System.
NSN 5306-00-144-3983 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.