PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFB575TYPE1GRADE1Bolt,machine

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-660-2717 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-660-2717 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-660-2717. Primary manufacturer part number: FFB575TYPE1GRADE1.
Features
  • Bolt,machine — FSC 5306
  • Material: STEEL OVERALL
  • Material Document and Classification: FF-B-575,GR 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Length: 2.250 INCHES MINIMUM IN
  • Features Provided: UNFINISHED HEAD
  • Thread Direction: RIGHT-HAND
  • 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 5306-00-660-2717, 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 18 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-660-2717
Primary Part NumberFFB575TYPE1GRADE1
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
MaterialSTEEL OVERALL
Material Document and ClassificationFF-B-575,GR 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Length2.250 INCHES MINIMUM IN
Features ProvidedUNFINISHED HEAD
Thread DirectionRIGHT-HAND
Thread Class2A A
Thread Quantity Per Inch8
Fastener Length5.500 INCHES NOMINAL IN
Head StyleSQUARE
Nominal Thread Diameter1.000 INCHES IN
Surface Treatment Document and ClassificationQQ-Z-325,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Head Height0.628 INCHES MINIMUM AND 0.684 INCHES MAXIMUM IN
Nondefinitive Spec/std Data1 TYPE AND 1 GRADE
Surface TreatmentZINC OVERALL
Width Between Flats1.450 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
Minimum Tensile Strength55000 POUNDS PER SQUARE INCH LBS
Hardness Rating95.0 ROCKWELL B MAXIMUM OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
No Item Name Available
Bolt,machine
5306-00-550-0721 INTERCHANGEABLE
Bolt,machine
5306-00-550-3109 INTERCHANGEABLE
Bolt,machine
5306-00-550-3111 INTERCHANGEABLE
Bolt,machine
5306-00-655-7462 INTERCHANGEABLE
Bolt,machine
5306-00-655-7477 INTERCHANGEABLE
Bolt,machine
5306-00-655-7504 INTERCHANGEABLE
Bolt,machine
5306-00-660-2732 INTERCHANGEABLE
Bolt,machine
5306-00-660-2734 INTERCHANGEABLE
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
FFB575TYPE1GRADE1 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5306-00-655-7055SUCCESSOR
NO ITEM NAME AVAILABLE
5306-00-425-0607SUCCESSOR
BOLT,MACHINE
5306-00-550-0721INTERCHANGEABLE
BOLT,MACHINE
5306-00-550-3109INTERCHANGEABLE
BOLT,MACHINE
5306-00-550-3111INTERCHANGEABLE
BOLT,MACHINE
5306-00-655-7462INTERCHANGEABLE
BOLT,MACHINE
5306-00-655-7477INTERCHANGEABLE
BOLT,MACHINE
5306-00-655-7504INTERCHANGEABLE
BOLT,MACHINE
5306-00-660-2732INTERCHANGEABLE
BOLT,MACHINE
5306-00-660-2734INTERCHANGEABLE
BOLT,MACHINE
5306-00-660-2750INTERCHANGEABLE
BOLT,MACHINE
5306-00-660-2775INTERCHANGEABLE
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-660-2717?

NSN 5306-00-660-2717 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 5306-00-660-2717?

NSN 5306-00-660-2717 has 1 cross-referenced part number: FFB575TYPE1GRADE1 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5306-00-660-2717?

There are 12 known substitutes for 5306-00-660-2717: 5306-00-655-7055, 5306-00-425-0607, 5306-00-550-0721 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FFB575TYPE1GRADE1?

Key specifications for FFB575TYPE1GRADE1: Material: STEEL OVERALL; Material Document and Classification: FF-B-575,GR 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Thread Length: 2.250 INCHES MINIMUM IN. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-660-2717 still in active supply?

NSN 5306-00-660-2717 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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