PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN175H6Bolt,close Tolerance

Aeronautical Standards Group Dept of Navy and Air Force · NSN 5306-00-151-1058 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-151-1058 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-151-1058. Primary manufacturer part number: AN175H6.
Features
  • Bolt,close Tolerance — FSC 5306
  • Thread Length: 0.500 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN
  • Distance From Head Largest Bearing Surface to Shank Hole Center: 0.671 INCHES NOMINAL FIRST HOLE IN
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Hole Quantity: 1
  • Head Style: HEXAGON
  • Surface Finish: 63.0 MICROINCHES GRIP
  • Minimum Tensile Strength: 125000 POUNDS PER SQUARE INCH LBS
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 8740 or Steel Comp 8630 or Steel Comp 8735 or Steel Comp 4037 or Steel Comp 4130 or Steel Comp 4140 Overall construction
General Description

The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-151-1058, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Aeronautical Standards Group Dept of Navy and Air Force. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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.

Technical Specifications
ParameterValue
NSN5306-00-151-1058
Primary Part NumberAN175H6
Item NameBolt,close Tolerance
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusCANCELLED
Thread Length0.500 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN
Distance From Head Largest Bearing Surface to Shank Hole Center0.671 INCHES NOMINAL FIRST HOLE IN
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Hole Quantity1
Head StyleHEXAGON
Surface Finish63.0 MICROINCHES GRIP
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Grip Length0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Class3A A
Thread Quantity Per Inch24
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Thread Series DesignatorUNF
Hole Configuration StyleHEXAGON FLATS
Surface Finish63.0 MICROINCHES BEARING SURFACE OF HEAD
Nominal Thread Diameter0.312 INCHES IN
Hole TypeDRILLED
Material Document and ClassificationMIL-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 AMS 6300 ASSN STD 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 6TH MATERIAL RESPONSE OVERALL
Thread DirectionRIGHT-HAND
Fastener Length0.828 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
MaterialSTEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 4140 OVERALL
Hole Diameter0.070 INCHES NOMINAL IN
Shank Unthreaded Hole Diameter0.076 INCHES NOMINAL FIRST HOLE IN
Width Between Flats0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
Grip Diameter0.3112 INCHES MINIMUM AND 0.3117 INCHES MAXIMUM IN
Head Height0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
No Item Name Available
Bolt,close Tolerance
Bolt,close Tolerance
Bolt,close Tolerance
Bolt,close Tolerance
Bolt,close Tolerance
Bolt,close Tolerance
Bolt,machine
5306-00-206-9577AN6H25 SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Bolt,close Tolerance
Cross-Reference Index
Part NumberManufacturer
AN175H6 Aeronautical Standards Group Dept of Navy and Air Force (USA)
8576 Department of the Air Force (USA)
B6812 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
85T6 Department of the Air Force (USA)
Related Parts
5306-00-275-9526SUCCESSOR
NO ITEM NAME AVAILABLE
5306-00-141-4507SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-151-1062SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-151-1063SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-151-3196SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-156-2457SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-167-3925SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-182-1815SUCCESSOR
BOLT,MACHINE
5306-00-206-9577SUCCESSOR
BOLT,MACHINE
AN6H25
5306-00-275-9525SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-582-5753SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-630-2118SUCCESSOR
BOLT,CLOSE TOLERANCE

Frequently Asked Questions

What is NSN 5306-00-151-1058?

NSN 5306-00-151-1058 is a Bolt,close Tolerance, manufactured by Aeronautical Standards Group Dept of Navy and Air Force, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-151-1058?

NSN 5306-00-151-1058 has 4 cross-referenced part numbers: AN175H6 (Aeronautical Standards Group Dept of Navy and Air Force), 8576 (Department of the Air Force), B6812 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 85T6 (Department of the Air Force).

What NSN replaces 5306-00-151-1058?

There are 12 known substitutes for 5306-00-151-1058: 5306-00-275-9526, 5306-00-141-4507, 5306-00-151-1062 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN175H6?

Key specifications for AN175H6: Thread Length: 0.500 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN; Distance From Head Largest Bearing Surface to Shank Hole Center: 0.671 INCHES NOMINAL FIRST HOLE IN; Surface Treatment: CADMIUM AND CHROMATE OVERALL; Hole Quantity: 1. 26 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-151-1058 still in active supply?

NSN 5306-00-151-1058 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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