PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFB571ATYPEB1CLASSCBolt,machine

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-150-9311 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-150-9311 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-150-9311. Primary manufacturer part number: FFB571ATYPEB1CLASSC.
Features
  • Bolt,machine — FSC 5306
  • Fastener Length: 3.750 INCHES NOMINAL IN
  • Thread Series Designator: UNF
  • Thread Class: 2A A
  • Nondefinitive Spec/std Data: B-2 TYPE AND C CLASS
  • Head Style: HEXAGON
  • Material: STEEL OVERALL
  • Thread Quantity Per Inch: 20
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 5306-00-150-9311, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN5306-00-150-9311
Primary Part NumberFFB571ATYPEB1CLASSC
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Fastener Length3.750 INCHES NOMINAL IN
Thread Series DesignatorUNF
Thread Class2A A
Nondefinitive Spec/std DataB-2 TYPE AND C CLASS
Head StyleHEXAGON
MaterialSTEEL OVERALL
Thread Quantity Per Inch20
Head Height0.317 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Surface TreatmentCADMIUM OR ZINC OVERALL
Nominal Thread Diameter0.500 INCHES IN
Features ProvidedFINISHED HEAD
Thread Length1.250 INCHES MINIMUM IN
Width Between Flats0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
Bolt,machine
Bolt,machine
5306-00-150-9303 INTERCHANGEABLE
Bolt,machine
5306-00-150-9309 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
5306-00-151-1927 INTERCHANGEABLE
Bolt,machine
5306-00-151-1929 INTERCHANGEABLE
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
FFB571ATYPEB1CLASSC Federal Specifications Promulgated by General Services Administration Washington DC (USA)
60-8-36 Department of the Air Force (USA)
FFB571ANDTYPEB2ANDCLASSC Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5306-00-150-9315SUCCESSOR
BOLT,MACHINE
5306-00-174-9458SUCCESSOR
BOLT,MACHINE
5306-00-150-9303INTERCHANGEABLE
BOLT,MACHINE
5306-00-150-9309INTERCHANGEABLE
BOLT,MACHINE
5306-00-151-1912INTERCHANGEABLE
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
5306-00-156-2231INTERCHANGEABLE
BOLT,MACHINE
5306-00-281-8917INTERCHANGEABLE
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-150-9311?

NSN 5306-00-150-9311 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 5306-00-150-9311?

NSN 5306-00-150-9311 has 3 cross-referenced part numbers: FFB571ATYPEB1CLASSC (Federal Specifications Promulgated by General Services Administration Washington DC), 60-8-36 (Department of the Air Force), FFB571ANDTYPEB2ANDCLASSC (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5306-00-150-9311?

There are 12 known substitutes for 5306-00-150-9311: 5306-00-150-9315, 5306-00-174-9458, 5306-00-150-9303 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FFB571ATYPEB1CLASSC?

Key specifications for FFB571ATYPEB1CLASSC: Fastener Length: 3.750 INCHES NOMINAL IN; Thread Series Designator: UNF; Thread Class: 2A A; Nondefinitive Spec/std Data: B-2 TYPE AND C CLASS. 14 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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