PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN4-44Bolt,machine

Aeronautical Standards Group Dept of Navy and Air Force · NSN 5306-00-151-1129 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-151-1129 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-151-1129. Primary manufacturer part number: AN4-44.
Features
  • Bolt,machine — FSC 5306
  • Thread Length: 0.469 INCHES MINIMUM IN
  • Thread Direction: RIGHT-HAND
  • Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Minimum Tensile Strength: 125000 POUNDS PER SQUARE INCH LBS
  • Thread Class: 3A A
  • Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES 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,machine, cataloged under National Stock Number 5306-00-151-1129, 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 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-151-1129
Primary Part NumberAN4-44
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusCANCELLED
Thread Length0.469 INCHES MINIMUM IN
Thread DirectionRIGHT-HAND
Head Height0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Nominal Thread Diameter0.250 INCHES IN
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Thread Class3A A
Surface Treatment Document and ClassificationQQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
MaterialSTEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
Width Between Flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
Shank Unthreaded Hole Diameter0.076 INCHES MINIMUM FIRST HOLE IN
Thread Quantity Per Inch28
Thread Series DesignatorUNF
Surface TreatmentCADMIUM OR CHROMATE OVERALL
Distance From Head Largest Bearing Surface to Shank Hole Center4.374 INCHES NOMINAL FIRST HOLE IN
Grip Length4.062 INCHES NOMINAL IN
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Fastener Length4.531 INCHES NOMINAL IN
Material Document and ClassificationMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 3RD MATERIAL RESPONSE OR MILS-S-6089 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR MIL-S-8695 MIL SPEC 6TH MATERIAL RESPONSE OVERALL
Features ProvidedFINISHED HEAD
Head StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
No Item Name Available
5306-00-206-3868AN44-4 SUCCESSOR
Bolt,eye
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-01-282-2352AN4H44 SUCCESSOR
Bolt,machine
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
AN4-44 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
5306-00-038-1072SUCCESSOR
NO ITEM NAME AVAILABLE
5306-00-206-3868SUCCESSOR
BOLT,EYE
AN44-4
5306-01-282-2352SUCCESSOR
BOLT,MACHINE
AN4H44
5940-00-993-6937INTERCHANGEABLE
TERMINAL,LUG

Frequently Asked Questions

What is NSN 5306-00-151-1129?

NSN 5306-00-151-1129 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 5306-00-151-1129?

NSN 5306-00-151-1129 has 1 cross-referenced part number: AN4-44 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 5306-00-151-1129?

There are 4 known substitutes for 5306-00-151-1129: 5306-00-038-1072, 5306-00-206-3868, 5306-01-282-2352 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN4-44?

Key specifications for AN4-44: Thread Length: 0.469 INCHES MINIMUM IN; Thread Direction: RIGHT-HAND; Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-151-1129 still in active supply?

NSN 5306-00-151-1129 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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