The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-638-8245, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company. 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: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-638-8245 |
| Primary Part Number | AF440 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company |
| Status | ACTIVE |
| Thread Class | 3A A |
| 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 |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Surface Finish | 63.0 MICROINCHES GRIP |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Surface Finish | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Material Document and Classification | MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL |
| Thread Series Designator | UNF |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Grip Diameter | 0.3112 INCHES MINIMUM AND 0.3117 INCHES MAXIMUM IN |
| Width Between Flats | 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Head Style | HEXAGON |
| Thread Length | 0.500 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN |
| Head Height | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 24 |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Fastener Length | 0.828 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AF440 | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA) |
| AN175-6A | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
| B6812 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5306-00-638-8245 is a Bolt,close Tolerance, manufactured by Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company, classified under FSC 5306 (No Item Name Available). Status: active.
NSN 5306-00-638-8245 has 3 cross-referenced part numbers: AF440 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), AN175-6A (Aeronautical Standards Group Dept of Navy and Air Force), B6812 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 5306-00-638-8245: 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 AF440: Thread Class: 3A A; 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; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL; Surface Finish: 63.0 MICROINCHES GRIP. 20 total characteristics are documented in the Federal Logistics Information System.