PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFB571Bolt,machine

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-207-3293 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-207-3293 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-207-3293. Primary manufacturer part number: FFB571.
Features
  • Bolt,machine — FSC 5306
  • Thread Direction: RIGHT-HAND
  • Head Style: SQUARE
  • Fastener Length: 5.000 INCHES NOMINAL IN
  • Grip Length: 3.250 INCHES NOMINAL IN
  • Head Height: 0.445 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN
  • Width Between Flats: 1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
  • Thread Class: 2A A
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 5306-00-207-3293, 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 1 commercial cross-reference from 1 manufacturer, 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
NSN5306-00-207-3293
Primary Part NumberFFB571
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Thread DirectionRIGHT-HAND
Head StyleSQUARE
Fastener Length5.000 INCHES NOMINAL IN
Grip Length3.250 INCHES NOMINAL IN
Head Height0.445 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN
Width Between Flats1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
Thread Class2A A
Minimum Tensile Strength48000 POUNDS PER SQUARE INCH LBS
Thread Length1.750 INCHES MINIMUM IN
Nondefinitive Spec/std DataA2 TYPE
MaterialSTEEL OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Nominal Thread Diameter0.750 INCHES IN
Thread Quantity Per Inch10
Features ProvidedFINISHED HEAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
FFB571 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5306-00-582-5952SUCCESSOR
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-207-3293?

NSN 5306-00-207-3293 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 5306-00-207-3293?

NSN 5306-00-207-3293 has 1 cross-referenced part number: FFB571 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5306-00-207-3293?

There is 1 known substitute for 5306-00-207-3293: 5306-00-582-5952. Verify interchangeability with system specifications before substitution.

What are the specifications of FFB571?

Key specifications for FFB571: Thread Direction: RIGHT-HAND; Head Style: SQUARE; Fastener Length: 5.000 INCHES NOMINAL IN; Grip Length: 3.250 INCHES NOMINAL IN. 15 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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