PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFB575BBolt,machine

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-724-6956 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-724-6956 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-724-6956. Primary manufacturer part number: FFB575B.
Features
  • Bolt,machine — FSC 5306
  • Surface Treatment: CADMIUM OVERALL
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Thread Direction: RIGHT-HAND
  • Thread Length: 1.375 INCHES MINIMUM IN
  • Grip Length: 1.375 INCHES NOMINAL IN
  • Head Style: HEXAGON
  • Head Height: 0.156 INCHES NOMINAL 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 5306-00-724-6956, 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 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-724-6956
Primary Part NumberFFB575B
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Surface TreatmentCADMIUM OVERALL
Nominal Thread Diameter0.250 INCHES IN
Thread DirectionRIGHT-HAND
Thread Length1.375 INCHES MINIMUM IN
Grip Length1.375 INCHES NOMINAL IN
Head StyleHEXAGON
Head Height0.156 INCHES NOMINAL IN
Thread Quantity Per Inch20
Fastener Length2.750 INCHES NOMINAL IN
Width Between Flats0.437 INCHES NOMINAL IN
Features ProvidedFINISHED HEAD
MaterialSTEEL OVERALL
Thread Class2A A
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
No Item Name Available
5306-00-141-283902-6 INTERCHANGEABLE
Bolt,machine
Dresser Industries Inc Leroi Div
Cross-Reference Index
Part NumberManufacturer
FFB575B Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5306-00-815-2552SUCCESSOR
NO ITEM NAME AVAILABLE
5306-00-141-2839INTERCHANGEABLE
BOLT,MACHINE
02-6

Frequently Asked Questions

What is NSN 5306-00-724-6956?

NSN 5306-00-724-6956 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 5306-00-724-6956?

NSN 5306-00-724-6956 has 1 cross-referenced part number: FFB575B (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5306-00-724-6956?

There are 2 known substitutes for 5306-00-724-6956: 5306-00-815-2552, 5306-00-141-2839. Verify interchangeability with system specifications before substitution.

What are the specifications of FFB575B?

Key specifications for FFB575B: Surface Treatment: CADMIUM OVERALL; Nominal Thread Diameter: 0.250 INCHES IN; Thread Direction: RIGHT-HAND; Thread Length: 1.375 INCHES MINIMUM IN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-724-6956 still in active supply?

NSN 5306-00-724-6956 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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