PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN75A25Bolt,machine

Aeronautical Standards Group Dept of Navy and Air Force · NSN 5306-00-051-2338 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-051-2338 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-051-2338. Primary manufacturer part number: AN75A25.
Features
  • Bolt,machine — FSC 5306
  • Features Provided: FINISHED HEAD
  • Thread Length: 0.547 INCHES MINIMUM IN
  • Thread Class: 3A A
  • Nominal Thread Diameter: 0.312 INCHES IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Head Style: HEXAGON
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-051-2338, 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 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: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-051-2338
Primary Part NumberAN75A25
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusCANCELLED
Features ProvidedFINISHED HEAD
Thread Length0.547 INCHES MINIMUM IN
Thread Class3A A
Nominal Thread Diameter0.312 INCHES IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head StyleHEXAGON
Thread DirectionRIGHT-HAND
Hole Quantity6
Hole TypeDRILLED
Grip Length2.125 INCHES NOMINAL IN
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Hole Diameter0.062 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Hole Configuration StyleHEXAGON LONGITUDINAL HOLE
Width Between Flats0.492 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Fastener Length2.672 INCHES NOMINAL IN
Head Height0.266 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
Thread Quantity Per Inch18
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
AN75A25 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
MS20074-05-25 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5306-00-150-9241SUCCESSOR
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 5306-00-051-2338?

NSN 5306-00-051-2338 is a Bolt,machine, 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 5306-00-051-2338?

NSN 5306-00-051-2338 has 3 cross-referenced part numbers: AN75A25 (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), MS20074-05-25 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5306-00-051-2338?

There are 12 known substitutes for 5306-00-051-2338: 5306-00-150-9241, 5306-00-141-4507, 5306-00-151-1062 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN75A25?

Key specifications for AN75A25: Features Provided: FINISHED HEAD; Thread Length: 0.547 INCHES MINIMUM IN; Thread Class: 3A A; Nominal Thread Diameter: 0.312 INCHES IN. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-051-2338 still in active supply?

NSN 5306-00-051-2338 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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