PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFB575TYPE1GRADE1Bolt,machine

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-655-7504 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-655-7504 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-655-7504. Primary manufacturer part number: FFB575TYPE1GRADE1.
Features
  • Bolt,machine — FSC 5306
  • Thread Quantity Per Inch: 18
  • Surface Treatment Document and Classification: QQ-Z-325,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Thread Direction: RIGHT-HAND
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 GRADE
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Length: 1.125 INCHES MINIMUM IN
  • Head Height: 0.186 INCHES MINIMUM AND 0.220 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 5306-00-655-7504, 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 2 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: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-655-7504
Primary Part NumberFFB575TYPE1GRADE1
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Thread Quantity Per Inch18
Surface Treatment Document and ClassificationQQ-Z-325,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread DirectionRIGHT-HAND
Nondefinitive Spec/std Data1 TYPE AND 1 GRADE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Length1.125 INCHES MINIMUM IN
Head Height0.186 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
Features ProvidedUNFINISHED HEAD
Head StyleSQUARE
Width Between Flats0.484 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Nominal Thread Diameter0.312 INCHES IN
MaterialSTEEL OVERALL
Fastener Length8.000 INCHES NOMINAL IN
Hardness Rating95.0 ROCKWELL B MAXIMUM OVERALL
Surface TreatmentZINC OVERALL
Thread Class2A A
Material Document and ClassificationFF-B-575,GR 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Minimum Tensile Strength55000 POUNDS PER SQUARE INCH LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
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
5306-00-660-2717 INTERCHANGEABLE
Bolt,machine
5306-00-660-2732 INTERCHANGEABLE
Bolt,machine
5306-00-660-2734 INTERCHANGEABLE
Bolt,machine
5306-00-660-2750 INTERCHANGEABLE
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
FFB575TYPE1GRADE1 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
5-16 18X8IN Gage Co the (USA)
Related Parts
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
5306-00-660-2717INTERCHANGEABLE
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
5306-00-680-6162INTERCHANGEABLE
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-655-7504?

NSN 5306-00-655-7504 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 5306-00-655-7504?

NSN 5306-00-655-7504 has 2 cross-referenced part numbers: FFB575TYPE1GRADE1 (Federal Specifications Promulgated by General Services Administration Washington DC), 5-16 18X8IN (Gage Co the).

What NSN replaces 5306-00-655-7504?

There are 12 known substitutes for 5306-00-655-7504: 5306-00-425-0607, 5306-00-550-0721, 5306-00-550-3109 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FFB575TYPE1GRADE1?

Key specifications for FFB575TYPE1GRADE1: Thread Quantity Per Inch: 18; Surface Treatment Document and Classification: QQ-Z-325,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Direction: RIGHT-HAND; Nondefinitive Spec/std Data: 1 TYPE AND 1 GRADE. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-655-7504 still in active supply?

NSN 5306-00-655-7504 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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