PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN8-51ABolt,machine

Aeronautical Standards Group Dept of Navy and Air Force · NSN 5306-00-151-5776 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-151-5776 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-151-5776. Primary manufacturer part number: AN8-51A.
Features
  • Bolt,machine — FSC 5306
  • Features Provided: FINISHED HEAD
  • Thread Length: 0.750 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
  • Head Style: HEXAGON
  • Nominal Thread Diameter: 0.500 INCHES IN
  • Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
  • Thread Quantity Per Inch: 20
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 8740 or Steel Comp 8630 or Steel Comp 8735 or Steel Comp 4037 or Steel Comp 4130 or Steel Comp 4140 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-151-5776, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5306-00-151-5776
Primary Part NumberAN8-51A
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusACTIVE
Features ProvidedFINISHED HEAD
Thread Length0.750 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
Head StyleHEXAGON
Nominal Thread Diameter0.500 INCHES IN
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Thread Quantity Per Inch20
Thread DirectionRIGHT-HAND
Thread Series DesignatorUNF
Material Document and ClassificationMIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 3RD MATERIAL RESPONSE OR AMS 6300 ASSN STD 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 6TH MATERIAL RESPONSE OVERALL
Head Height0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
MaterialSTEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 4140 OVERALL
Fastener Length5.203 INCHES MINIMUM AND 5.250 INCHES MAXIMUM IN
Grip Length4.422 INCHES MINIMUM AND 4.453 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Width Between Flats0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
Thread Class3A A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5306-00-180-2782AN5CH4A SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
AN8-51A Aeronautical Standards Group Dept of Navy and Air Force (USA)
NASM3 THRU NASM20 The Boeing Company Div Defense (USA)
Related Parts
5306-00-180-2782SUCCESSOR
BOLT,MACHINE
AN5CH4A

Frequently Asked Questions

What is NSN 5306-00-151-5776?

NSN 5306-00-151-5776 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 5306-00-151-5776?

NSN 5306-00-151-5776 has 2 cross-referenced part numbers: AN8-51A (Aeronautical Standards Group Dept of Navy and Air Force), NASM3 THRU NASM20 (The Boeing Company Div Defense).

What NSN replaces 5306-00-151-5776?

There is 1 known substitute for 5306-00-151-5776: 5306-00-180-2782. Verify interchangeability with system specifications before substitution.

What are the specifications of AN8-51A?

Key specifications for AN8-51A: Features Provided: FINISHED HEAD; Thread Length: 0.750 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN; Head Style: HEXAGON; Nominal Thread Diameter: 0.500 INCHES IN. 18 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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