The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-151-0320, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 24 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: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-151-0320 |
| Primary Part Number | B6812 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Thread Quantity Per Inch | 28 |
| Head Style | HEXAGON |
| Fastener Length | 3.515 INCHES MINIMUM AND 3.562 INCHES MAXIMUM IN |
| Material | STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 4140 OVERALL |
| Surface Finish | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Grip Diameter | 0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Class | 3A A |
| Head Height | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Grip Length | 3.046 INCHES MINIMUM AND 3.078 INCHES MAXIMUM IN |
| Thread Series Designator | UNF |
| Hole Diameter | 0.046 INCHES NOMINAL IN |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.358 INCHES MINIMUM AND 3.390 INCHES MAXIMUM FIRST HOLE IN |
| Hole Configuration Style | HEXAGON FLATS |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Surface Finish | 63.0 MICROINCHES GRIP |
| Hole Quantity | 1 |
| Shank Unthreaded Hole Diameter | 0.076 INCHES NOMINAL FIRST HOLE IN |
| Hole Type | DRILLED |
| Thread Direction | RIGHT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| B6812 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| NASM6812 | National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA) |
| AN174H34 | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
NSN 5306-00-151-0320 is a Bolt,close Tolerance, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5306 (No Item Name Available). Status: active.
NSN 5306-00-151-0320 has 3 cross-referenced part numbers: B6812 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), NASM6812 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), AN174H34 (Aeronautical Standards Group Dept of Navy and Air Force).
There are 12 known substitutes for 5306-00-151-0320: 5306-00-141-4507, 5306-00-151-1062, 5306-00-151-1063 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for B6812: Thread Quantity Per Inch: 28; Head Style: HEXAGON; Fastener Length: 3.515 INCHES MINIMUM AND 3.562 INCHES MAXIMUM IN; Material: STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 4140 OVERALL. 24 total characteristics are documented in the Federal Logistics Information System.