PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FF-S-85CBolt,machine

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-270-9441 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-270-9441 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-270-9441. Primary manufacturer part number: FF-S-85C.
Features
  • Bolt,machine — FSC 5306
  • Features Provided: FINISHED HEAD
  • Head Style: HEXAGON
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Grip Length: 4.500 INCHES NOMINAL IN
  • Nominal Thread Diameter: 0.438 INCHES IN
  • Hardness Rating: 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
  • Head Height: 0.281 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 5306-00-270-9441, 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 16 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: Active.

Technical Specifications
ParameterValue
NSN5306-00-270-9441
Primary Part NumberFF-S-85C
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Features ProvidedFINISHED HEAD
Head StyleHEXAGON
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Grip Length4.500 INCHES NOMINAL IN
Nominal Thread Diameter0.438 INCHES IN
Hardness Rating23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Head Height0.281 INCHES NOMINAL IN
Thread Quantity Per Inch14
Nondefinitive Spec/std Data2 TYPE AND 10P STYLE AND 5 GRADE
Thread Length1.500 INCHES MINIMUM IN
Thread Class2A A
MaterialSTEEL OVERALL
Width Between Flats0.603 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
Fastener Length6.000 INCHES NOMINAL IN
Minimum Tensile Strength120000 POUNDS PER SQUARE INCH LBS
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
Bolt,machine
5306-01-448-3920MS35307-348 SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
FF-S-85C Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5306-00-272-4229SUCCESSOR
BOLT,MACHINE
5306-01-448-3920SUCCESSOR
BOLT,MACHINE
MS35307-348

Frequently Asked Questions

What is NSN 5306-00-270-9441?

NSN 5306-00-270-9441 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 5306-00-270-9441?

NSN 5306-00-270-9441 has 1 cross-referenced part number: FF-S-85C (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5306-00-270-9441?

There are 2 known substitutes for 5306-00-270-9441: 5306-00-272-4229, 5306-01-448-3920. Verify interchangeability with system specifications before substitution.

What are the specifications of FF-S-85C?

Key specifications for FF-S-85C: Features Provided: FINISHED HEAD; Head Style: HEXAGON; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Grip Length: 4.500 INCHES NOMINAL IN. 16 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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