PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN4-31ABolt,machine

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5306-00-151-1407 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-151-1407 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-151-1407. Primary manufacturer part number: AN4-31A.
Features
  • Bolt,machine — FSC 5306
  • Thread Direction: RIGHT-HAND
  • Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
  • Fastener Length: 3.156 INCHES NOMINAL IN
  • Features Provided: FINISHED HEAD
  • Thread Series Designator: UNF
  • Width Between Flats: 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
  • Head Style: HEXAGON
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 5306-00-151-1407, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-151-1407
Primary Part NumberAN4-31A
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 DirectionRIGHT-HAND
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
Fastener Length3.156 INCHES NOMINAL IN
Features ProvidedFINISHED HEAD
Thread Series DesignatorUNF
Width Between Flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
Head StyleHEXAGON
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Surface TreatmentCADMIUM AND CHROMATE OVERALL
MaterialSTEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL
Thread Length0.468 INCHES MINIMUM IN
Material Document and ClassificationMIL-B-6812 MIL SPEC ALL MATERIAL RESPONSES OVERALL
Head Height0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Nominal Thread Diameter0.250 INCHES IN
Thread Class3A A
Grip Length2.688 INCHES NOMINAL IN
Thread Quantity Per Inch28
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5306-00-151-2619
HAZMATNo
Verified Substitutes 12
Bolt,machine
Bolt,machine
Bolt,machine
5306-00-156-2338AN4C6A SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-156-2344AN4C14A SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Bolt,machine
Bolt,machine
Bolt,machine
5306-00-182-2025NASM3 THRU NASM20-AN5H6A 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
AN4-31A PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
5306PL0961538 Jednolity Indeks Materialowy - Uniform Material Index (POL)
MILB6812AAMEND2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILB6812AAMEND2 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
7601613 PRIMARY Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
AN4-31A Aeronautical Standards Group Dept of Navy and Air Force (USA)
5306PL1371206 Jednolity Indeks Materialowy - Uniform Material Index (POL)
7295-2 Raytheon Technical Services Company (USA)
7295-2 Cae-Link Corp (USA)
Related Parts
SUCCESSOR 5306-00-151-2619 Bolt,machine
5306-00-151-2614SUCCESSOR
BOLT,MACHINE
5306-00-151-2615SUCCESSOR
BOLT,MACHINE
5306-00-156-2338SUCCESSOR
BOLT,MACHINE
AN4C6A
5306-00-156-2344SUCCESSOR
BOLT,MACHINE
AN4C14A
5306-00-180-1933SUCCESSOR
BOLT,MACHINE
5306-00-182-1393SUCCESSOR
BOLT,MACHINE
5306-00-182-1899SUCCESSOR
BOLT,MACHINE
5306-00-182-2025SUCCESSOR
BOLT,MACHINE
NASM3 THRU NASM20-AN5H6A
5306-00-206-2332SUCCESSOR
BOLT,MACHINE
5306-00-208-1359SUCCESSOR
BOLT,MACHINE
5306-00-208-3646SUCCESSOR
BOLT,MACHINE
AN8-11A

Frequently Asked Questions

What is NSN 5306-00-151-1407?

NSN 5306-00-151-1407 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 5306-00-151-1407?

NSN 5306-00-151-1407 has 9 cross-referenced part numbers: AN4-31A (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 5306PL0961538 (Jednolity Indeks Materialowy - Uniform Material Index), MILB6812AAMEND2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILB6812AAMEND2 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 7601613 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate) and 4 more.

What NSN replaces 5306-00-151-1407?

There are 12 known substitutes for 5306-00-151-1407: 5306-00-151-2614, 5306-00-151-2615, 5306-00-151-2619 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN4-31A?

Key specifications for AN4-31A: Thread Direction: RIGHT-HAND; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL; Fastener Length: 3.156 INCHES NOMINAL IN; Features Provided: FINISHED HEAD. 19 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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