PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFB571TYPEB2Bolt,machine

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-297-8724 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-297-8724 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-297-8724. Primary manufacturer part number: FFB571TYPEB2.
Features
  • Bolt,machine — FSC 5306
  • Grip Length: 0.500 INCHES NOMINAL IN
  • Width Between Flats: 0.363 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
  • Head Style: HEXAGON
  • Head Height: 0.156 INCHES NOMINAL IN
  • Minimum Tensile Strength: 100000 POUNDS PER SQUARE INCH LBS
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Thread Quantity Per Inch: 20
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1213 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-297-8724, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 17 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-297-8724
Primary Part NumberFFB571TYPEB2
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Grip Length0.500 INCHES NOMINAL IN
Width Between Flats0.363 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Head StyleHEXAGON
Head Height0.156 INCHES NOMINAL IN
Minimum Tensile Strength100000 POUNDS PER SQUARE INCH LBS
Nominal Thread Diameter0.250 INCHES IN
Thread Quantity Per Inch20
Thread Class2A A
Thread Length0.375 INCHES MINIMUM IN
Thread DirectionRIGHT-HAND
Surface TreatmentDICHROMATE ZINC OVERALL
MaterialSTEEL COMP 1213 OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Material Document and Classification66 FED STD 1ST MATERIAL RESPONSE OR AISI/SAE ASSN STD 2ND MATERIAL RESPONSE OVERALL
Nondefinitive Spec/std DataB-2 TYPE
Features ProvidedFINISHED HEAD
Fastener Length0.875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5306-00-141-292992775 INTERCHANGEABLE
Bolt,machine
Briggs and Stratton Corp
5306-00-141-2931 INTERCHANGEABLE
Bolt,machine
5306-00-206-4772 INTERCHANGEABLE
Bolt,machine
5306-00-206-477992766 INTERCHANGEABLE
Bolt,machine
Briggs and Stratton Corp
5306-00-206-4800 INTERCHANGEABLE
Bolt,machine
5306-00-206-6093 INTERCHANGEABLE
Bolt,machine
5310-00-207-941350-2L3 INTERCHANGEABLE
Nut,plain,square
Trailmobile Inc Sub of the Pullman Co
5306-00-297-8699122138 INTERCHANGEABLE
Bolt,machine
Chrysler Realty Company Llc Dba Daimler Chrysler
5306-00-297-8733 INTERCHANGEABLE
Bolt,machine
5306-00-514-9260 INTERCHANGEABLE
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
FFB571TYPEB2 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5306-00-141-2929INTERCHANGEABLE
BOLT,MACHINE
92775
5306-00-141-2931INTERCHANGEABLE
BOLT,MACHINE
5306-00-206-4772INTERCHANGEABLE
BOLT,MACHINE
5306-00-206-4779INTERCHANGEABLE
BOLT,MACHINE
92766
5306-00-206-4800INTERCHANGEABLE
BOLT,MACHINE
5306-00-206-6093INTERCHANGEABLE
BOLT,MACHINE
5310-00-207-9413INTERCHANGEABLE
NUT,PLAIN,SQUARE
50-2L3
5306-00-297-8699INTERCHANGEABLE
BOLT,MACHINE
122138
5306-00-297-8733INTERCHANGEABLE
BOLT,MACHINE
5306-00-514-9260INTERCHANGEABLE
BOLT,MACHINE
5306-00-637-8797INTERCHANGEABLE
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-297-8724?

NSN 5306-00-297-8724 is a Bolt,machine, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-297-8724?

NSN 5306-00-297-8724 has 1 cross-referenced part number: FFB571TYPEB2 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5306-00-297-8724?

There are 11 known substitutes for 5306-00-297-8724: 5306-00-141-2929, 5306-00-141-2931, 5306-00-206-4772 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FFB571TYPEB2?

Key specifications for FFB571TYPEB2: Grip Length: 0.500 INCHES NOMINAL IN; Width Between Flats: 0.363 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Head Style: HEXAGON; Head Height: 0.156 INCHES NOMINAL IN. 17 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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