PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN4-32Bolt,machine

Aeronautical Standards Group Dept of Navy and Air Force · NSN 5306-00-151-1139 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-151-1139 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-151-1139. Primary manufacturer part number: AN4-32.
Features
  • Bolt,machine — FSC 5306
  • Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
  • Minimum Tensile Strength: 125000 POUNDS PER SQUARE INCH LBS
  • Width Between Flats: 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
  • Fastener Length: 3.281 INCHES NOMINAL IN
  • Head Style: HEXAGON
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Thread Series Designator: UNF
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 5306-00-151-1139, 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-151-1139
Primary Part NumberAN4-32
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusACTIVE
Head Height0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Width Between Flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
Fastener Length3.281 INCHES NOMINAL IN
Head StyleHEXAGON
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Thread Series DesignatorUNF
Thread Class3A A
Shank Unthreaded Hole Diameter0.076 INCHES MINIMUM FIRST HOLE IN
MaterialSTEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
Grip Length2.812 INCHES NOMINAL IN
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
Distance From Head Largest Bearing Surface to Shank Hole Center3.124 INCHES NOMINAL FIRST HOLE IN
Features ProvidedFINISHED HEAD
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
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 MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL
Thread Quantity Per Inch28
Nominal Thread Diameter0.250 INCHES IN
Thread Length0.469 INCHES MINIMUM IN
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5940-00-231-1603 INTERCHANGEABLE
Terminal,lug
Cross-Reference Index
Part NumberManufacturer
AN4-32 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
5940-00-231-1603INTERCHANGEABLE
TERMINAL,LUG

Frequently Asked Questions

What is NSN 5306-00-151-1139?

NSN 5306-00-151-1139 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 5306-00-151-1139?

NSN 5306-00-151-1139 has 1 cross-referenced part number: AN4-32 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 5306-00-151-1139?

There is 1 known substitute for 5306-00-151-1139: 5940-00-231-1603. Verify interchangeability with system specifications before substitution.

What are the specifications of AN4-32?

Key specifications for AN4-32: Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Minimum Tensile Strength: 125000 POUNDS PER SQUARE INCH LBS; Width Between Flats: 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN; Fastener Length: 3.281 INCHES NOMINAL IN. 20 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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