PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN4C71ABolt,machine

Aeronautical Standards Group Dept of Navy and Air Force · NSN 5306-00-141-4712 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-141-4712 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-141-4712. Primary manufacturer part number: AN4C71A.
Features
  • Bolt,machine — FSC 5306
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Minimum Tensile Strength: 125000 POUNDS PER SQUARE INCH LBS
  • Thread Series Designator: UNF
  • Thread Class: 3A A
  • Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
  • Head Style: HEXAGON
  • Material Document and Classification: MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 431 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-141-4712, 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 17 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: Active.

Technical Specifications
ParameterValue
NSN5306-00-141-4712
Primary Part NumberAN4C71A
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusACTIVE
Nominal Thread Diameter0.250 INCHES IN
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Thread Series DesignatorUNF
Thread Class3A A
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Head StyleHEXAGON
Material Document and ClassificationMIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Width Between Flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
MaterialSTEEL COMP 431 OVERALL
Surface TreatmentPASSIVATE OVERALL
Thread DirectionRIGHT-HAND
Features ProvidedFINISHED HEAD
Thread Length0.438 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
Fastener Length7.141 INCHES MINIMUM AND 7.188 INCHES MAXIMUM IN
Grip Length6.672 INCHES MINIMUM AND 6.703 INCHES MAXIMUM IN
Head Height0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Thread Quantity Per Inch28
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
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
Bolt,close Tolerance
Cross-Reference Index
Part NumberManufacturer
AN4C71A Aeronautical Standards Group Dept of Navy and Air Force (USA)
6812 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
AN4C71A 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
Related Parts
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
5306-00-638-9221SUCCESSOR
BOLT,CLOSE TOLERANCE

Frequently Asked Questions

What is NSN 5306-00-141-4712?

NSN 5306-00-141-4712 is a Bolt,machine, manufactured by Aeronautical Standards Group Dept of Navy and Air Force, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-141-4712?

NSN 5306-00-141-4712 has 4 cross-referenced part numbers: AN4C71A (Aeronautical Standards Group Dept of Navy and Air Force), 6812 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), AN4C71A (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).

What NSN replaces 5306-00-141-4712?

There are 12 known substitutes for 5306-00-141-4712: 5306-00-141-4507, 5306-00-151-1062, 5306-00-151-1063 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN4C71A?

Key specifications for AN4C71A: Nominal Thread Diameter: 0.250 INCHES IN; Minimum Tensile Strength: 125000 POUNDS PER SQUARE INCH LBS; Thread Series Designator: UNF; Thread Class: 3A A. 17 total characteristics are documented in the Federal Logistics Information System.

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