PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN175-42ABolt,close Tolerance

Aeronautical Standards Group Dept of Navy and Air Force · NSN 5306-00-151-3196 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-151-3196 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-151-3196. Primary manufacturer part number: AN175-42A.
Features
  • Bolt,close Tolerance — FSC 5306
  • Thread Series Designator: UNF
  • Thread Length: 0.500 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
  • Thread Quantity Per Inch: 24
  • Material: STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
  • Hole Quantity: 1
  • Width Between Flats: 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-416,TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4140 or Steel Comp 8740 or Steel Comp 8630 or Steel Comp 8735 or Steel Comp 4130 or Steel Comp 4037 Overall construction
General Description

The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-151-3196, 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 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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
NSN5306-00-151-3196
Primary Part NumberAN175-42A
Item NameBolt,close Tolerance
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusCANCELLED
Thread Series DesignatorUNF
Thread Length0.500 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
Thread Quantity Per Inch24
MaterialSTEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
Hole Quantity1
Width Between Flats0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Fastener Length4.328 INCHES MINIMUM AND 4.375 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Hole TypeDRILLED
Thread Class3A A
Nominal Thread Diameter0.312 INCHES IN
Hole Configuration StyleHEXAGON FLATS
Surface Finish63.0 MICROINCHES GRIP
Grip Length3.797 INCHES MINIMUM AND 3.828 INCHES MAXIMUM IN
Head Height0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
Surface Finish63.0 MICROINCHES BEARING SURFACE OF HEAD
Head StyleHEXAGON
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Grip Diameter0.3112 INCHES MINIMUM AND 0.3117 INCHES MAXIMUM IN
Hole Diameter0.070 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5306-00-051-2338
HAZMATNo
Verified Substitutes 12
No Item Name Available
Bolt,machine
Bolt,machine
5306-00-051-2344NASM20074-05-40 SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Bolt,machine
Bolt,close Tolerance
Bolt,machine
Bolt,machine
5306-00-144-3686AN3-55 SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
AN175-42A Aeronautical Standards Group Dept of Navy and Air Force (USA)
NASM6812 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
B6812 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILB6812 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILB6812 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
AN175H42A Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
SUCCESSOR 5306-00-051-2338 Bolt,machine
5306-00-182-1956SUCCESSOR
NO ITEM NAME AVAILABLE
5306-00-051-2343SUCCESSOR
BOLT,MACHINE
5306-00-051-2344SUCCESSOR
BOLT,MACHINE
NASM20074-05-40
5306-00-051-2349SUCCESSOR
BOLT,MACHINE
5306-00-141-4519SUCCESSOR
BOLT,CLOSE TOLERANCE
5306-00-141-4712SUCCESSOR
BOLT,MACHINE
5306-00-141-4716SUCCESSOR
BOLT,MACHINE
5306-00-144-3686SUCCESSOR
BOLT,MACHINE
AN3-55
5306-00-144-3692SUCCESSOR
BOLT,MACHINE
5306-00-144-3700SUCCESSOR
BOLT,MACHINE
5306-00-144-3711SUCCESSOR
BOLT,CLOSE TOLERANCE

Frequently Asked Questions

What is NSN 5306-00-151-3196?

NSN 5306-00-151-3196 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 5306-00-151-3196?

NSN 5306-00-151-3196 has 6 cross-referenced part numbers: AN175-42A (Aeronautical Standards Group Dept of Navy and Air Force), NASM6812 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), B6812 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILB6812 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILB6812 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use) and 1 more.

What NSN replaces 5306-00-151-3196?

There are 12 known substitutes for 5306-00-151-3196: 5306-00-182-1956, 5306-00-051-2338, 5306-00-051-2343 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN175-42A?

Key specifications for AN175-42A: Thread Series Designator: UNF; Thread Length: 0.500 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN; Thread Quantity Per Inch: 24; Material: STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL. 23 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-151-3196 still in active supply?

NSN 5306-00-151-3196 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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