PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFB571ANDTYPEB2ANDCLASSCBolt,machine

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-281-8917 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-281-8917 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-281-8917. Primary manufacturer part number: FFB571ANDTYPEB2ANDCLASSC.
Features
  • Bolt,machine — FSC 5306
  • Nominal Thread Diameter: 0.438 INCHES IN
  • Thread Direction: RIGHT-HAND
  • Thread Class: 2A A
  • Features Provided: FINISHED HEAD
  • Thread Quantity Per Inch: 14
  • Fastener Length: 1.000 INCHES NOMINAL IN
  • Width Between Flats: 0.603 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-281-8917, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-281-8917
Primary Part NumberFFB571ANDTYPEB2ANDCLASSC
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Nominal Thread Diameter0.438 INCHES IN
Thread DirectionRIGHT-HAND
Thread Class2A A
Features ProvidedFINISHED HEAD
Thread Quantity Per Inch14
Fastener Length1.000 INCHES NOMINAL IN
Width Between Flats0.603 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
Thread Length0.875 INCHES MINIMUM IN
Nondefinitive Spec/std DataB2 TYPE AND C CLASS
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head Height0.262 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
Minimum Tensile Strength48000 POUNDS PER SQUARE INCH LBS
Surface TreatmentCADMIUM OVERALL
Head StyleHEXAGON
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
No Item Name Available
Bolt,machine
Bolt,machine
5306-00-150-9303 INTERCHANGEABLE
Bolt,machine
5306-00-150-9309 INTERCHANGEABLE
Bolt,machine
5306-00-150-9311 INTERCHANGEABLE
Bolt,machine
5306-00-151-1912 INTERCHANGEABLE
Bolt,machine
5306-00-151-1917 INTERCHANGEABLE
Bolt,machine
5306-00-151-1921 INTERCHANGEABLE
Bolt,machine
5306-00-151-1924 INTERCHANGEABLE
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
FFB571ANDTYPEB2ANDCLASSC Federal Specifications Promulgated by General Services Administration Washington DC (USA)
100-14S7-4 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
65-7-10 Air Force Standard
Related Parts
5306-00-654-2172SUCCESSOR
NO ITEM NAME AVAILABLE
5306-00-150-9315SUCCESSOR
BOLT,MACHINE
5306-00-174-9458SUCCESSOR
BOLT,MACHINE
5306-00-150-9303INTERCHANGEABLE
BOLT,MACHINE
5306-00-150-9309INTERCHANGEABLE
BOLT,MACHINE
5306-00-150-9311INTERCHANGEABLE
BOLT,MACHINE
5306-00-151-1912INTERCHANGEABLE
BOLT,MACHINE
5306-00-151-1917INTERCHANGEABLE
BOLT,MACHINE
5306-00-151-1921INTERCHANGEABLE
BOLT,MACHINE
5306-00-151-1924INTERCHANGEABLE
BOLT,MACHINE
5306-00-151-1927INTERCHANGEABLE
BOLT,MACHINE
5306-00-151-1929INTERCHANGEABLE
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-281-8917?

NSN 5306-00-281-8917 is a Bolt,machine, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-281-8917?

NSN 5306-00-281-8917 has 3 cross-referenced part numbers: FFB571ANDTYPEB2ANDCLASSC (Federal Specifications Promulgated by General Services Administration Washington DC), 100-14S7-4 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 65-7-10 (Air Force Standard).

What NSN replaces 5306-00-281-8917?

There are 12 known substitutes for 5306-00-281-8917: 5306-00-654-2172, 5306-00-150-9315, 5306-00-174-9458 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FFB571ANDTYPEB2ANDCLASSC?

Key specifications for FFB571ANDTYPEB2ANDCLASSC: Nominal Thread Diameter: 0.438 INCHES IN; Thread Direction: RIGHT-HAND; Thread Class: 2A A; Features Provided: FINISHED HEAD. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-281-8917 still in active supply?

NSN 5306-00-281-8917 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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