PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN6H25Bolt,machine

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5306-00-206-9577 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-206-9577 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-206-9577. Primary manufacturer part number: AN6H25.
Features
  • Bolt,machine — FSC 5306
  • Features Provided: FINISHED HEAD
  • Thread Series Designator: UNF
  • Thread Class: 3A A
  • Head Style: HEXAGON
  • Thread Direction: RIGHT-HAND
  • Width Between Flats: 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.375 INCHES IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4037 or Steel Comp 4130 or Steel Comp 8630 or Steel Comp 8735 or Steel Comp 8740 or Steel Comp 4140 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-206-9577, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 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
NSN5306-00-206-9577
Primary Part NumberAN6H25
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Features ProvidedFINISHED HEAD
Thread Series DesignatorUNF
Thread Class3A A
Head StyleHEXAGON
Thread DirectionRIGHT-HAND
Width Between Flats0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
Nominal Thread Diameter0.375 INCHES IN
Shank Unthreaded Hole Diameter0.106 INCHES NOMINAL FIRST HOLE IN
Grip Length2.062 INCHES NOMINAL IN
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Hole Configuration StyleHEXAGON FLATS
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
MaterialSTEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL
Hole TypeDRILLED
Hole Quantity1
Distance From Head Largest Bearing Surface to Shank Hole Center2.500 INCHES NOMINAL FIRST HOLE IN
Thread Quantity Per Inch24
Material Document and ClassificationMIL-B-6812 MIL SPEC ALL MATERIAL RESPONSES OVERALL
Head Height0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
Thread Length0.641 INCHES MINIMUM IN
Hole Diameter0.070 INCHES NOMINAL IN
Fastener Length2.703 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
AN6H25 Aeronautical Standards Group Dept of Navy and Air Force (USA)
200574 Wiba Zevenaar B.v. (NLD)
B6812 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AN6H25 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
AN176H25 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
SUCCESSOR 5306-00-051-2338 Bolt,machine
5306-00-275-9534SUCCESSOR
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 5306-00-206-9577?

NSN 5306-00-206-9577 is a Bolt,machine, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-206-9577?

NSN 5306-00-206-9577 has 5 cross-referenced part numbers: AN6H25 (Aeronautical Standards Group Dept of Navy and Air Force), 200574 (Wiba Zevenaar B.v.), B6812 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AN6H25 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), AN176H25 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 5306-00-206-9577?

There are 12 known substitutes for 5306-00-206-9577: 5306-00-275-9534, 5306-00-051-2338, 5306-00-051-2343 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN6H25?

Key specifications for AN6H25: Features Provided: FINISHED HEAD; Thread Series Designator: UNF; Thread Class: 3A A; Head Style: HEXAGON. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-206-9577 still in active supply?

NSN 5306-00-206-9577 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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