PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN4H44Bolt,machine

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5306-01-282-2352 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-01-282-2352 — this item is cataloged by the U.S. Government under National Stock Number 5306-01-282-2352. Primary manufacturer part number: AN4H44.
Features
  • Bolt,machine — FSC 5306
  • Thread Length: 0.437 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
  • Width Between Flats: 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Hole Type: DRILLED
  • Grip Length: 4.046 INCHES MINIMUM AND 4.078 INCHES MAXIMUM IN
  • Thread Series Designator: UNF
  • Thread Class: 3A A
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,machine, cataloged under National Stock Number 5306-01-282-2352, 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 23 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-01-282-2352
Primary Part NumberAN4H44
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
StatusACTIVE
Thread Length0.437 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
Width Between Flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Hole TypeDRILLED
Grip Length4.046 INCHES MINIMUM AND 4.078 INCHES MAXIMUM IN
Thread Series DesignatorUNF
Thread Class3A A
Fastener Length4.515 INCHES MINIMUM AND 4.562 INCHES MAXIMUM IN
Distance From Head Largest Bearing Surface to Shank Hole Center4.358 INCHES MINIMUM AND 4.390 INCHES MAXIMUM FIRST HOLE IN
Hole Quantity1
Thread DirectionRIGHT-HAND
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Shank Unthreaded Hole Diameter0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
Head StyleHEXAGON
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Head Height0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Features ProvidedFINISHED HEAD
Nominal Thread Diameter0.250 INCHES IN
Thread Quantity Per Inch28
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 Configuration StyleHEXAGON FLATS
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Hole Diameter0.046 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5306-00-151-1129
HAZMATNo
Verified Substitutes 3
Bolt,machine
5306-00-206-3868AN44-4 SUCCESSOR
Bolt,eye
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5940-00-993-6937 INTERCHANGEABLE
Terminal,lug
Cross-Reference Index
Part NumberManufacturer
5306PL0818284 Jednolity Indeks Materialowy - Uniform Material Index (POL)
AN4H44 Aeronautical Standards Group Dept of Navy and Air Force (USA)
AN4H44 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
AN4-44 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
SUCCESSOR 5306-00-151-1129 Bolt,machine
5306-00-206-3868SUCCESSOR
BOLT,EYE
AN44-4
5940-00-993-6937INTERCHANGEABLE
TERMINAL,LUG

Frequently Asked Questions

What is NSN 5306-01-282-2352?

NSN 5306-01-282-2352 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: active.

What are the part numbers for NSN 5306-01-282-2352?

NSN 5306-01-282-2352 has 4 cross-referenced part numbers: 5306PL0818284 (Jednolity Indeks Materialowy - Uniform Material Index), AN4H44 (Aeronautical Standards Group Dept of Navy and Air Force), AN4H44 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), AN4-44 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 5306-01-282-2352?

There are 3 known substitutes for 5306-01-282-2352: 5306-00-151-1129, 5306-00-206-3868, 5940-00-993-6937. Verify interchangeability with system specifications before substitution.

What are the specifications of AN4H44?

Key specifications for AN4H44: Thread Length: 0.437 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN; Width Between Flats: 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hole Type: DRILLED. 23 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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