PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FF-S-85Bolt,machine

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-174-9744 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-174-9744 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-174-9744. Primary manufacturer part number: FF-S-85.
Features
  • Bolt,machine — FSC 5306
  • Thread Direction: RIGHT-HAND
  • Thread Class: 2A A
  • Material: NICKEL ALLOY 400 OVERALL
  • Thread Quantity Per Inch: 20
  • Nondefinitive Spec/std Data: 2 TYPE
  • Width Between Flats: 0.425 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
  • Head Style: HEXAGON
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Nickel Alloy 400 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-174-9744, 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 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: Active.

Technical Specifications
ParameterValue
NSN5306-00-174-9744
Primary Part NumberFF-S-85
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Thread DirectionRIGHT-HAND
Thread Class2A A
MaterialNICKEL ALLOY 400 OVERALL
Thread Quantity Per Inch20
Nondefinitive Spec/std Data2 TYPE
Width Between Flats0.425 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
Head StyleHEXAGON
Features ProvidedFINISHED HEAD
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Material Document and ClassificationQQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Fastener Length1.750 INCHES NOMINAL IN
Head Height0.156 INCHES NOMINAL IN
Thread Length0.750 INCHES MINIMUM IN
Nominal Thread Diameter0.250 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
Bolt,square Neck
5306-00-225-8516MS90725-52 SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-225-9095MS90726-40 SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-226-4824AEB02C312625WA6AA1 SUCCESSOR
Bolt,machine
The American Society of Mechanical Engineers
5306-00-226-4835MS90725-42 SUCCESSOR
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-226-4838AEB02C312C25AW9A91 SUCCESSOR
Bolt,machine
The American Society of Mechanical Engineers
5306-00-226-4839AEB02C312C50WA6AA1 SUCCESSOR
Bolt,machine
The American Society of Mechanical Engineers
5306-00-226-4840B1821BH031C375N SUCCESSOR
Bolt,machine
American National Standards Institute Incorporated Dba American National Standards Institute
Bolt,machine
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
FF-S-85 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MIL-B-857 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5306-00-089-1425SUCCESSOR
BOLT,SQUARE NECK
5306-00-225-8516SUCCESSOR
BOLT,MACHINE
MS90725-52
5306-00-225-9095SUCCESSOR
BOLT,MACHINE
MS90726-40
5306-00-226-4824SUCCESSOR
BOLT,MACHINE
AEB02C312625WA6AA1
5306-00-226-4835SUCCESSOR
BOLT,MACHINE
MS90725-42
5306-00-226-4838SUCCESSOR
BOLT,MACHINE
AEB02C312C25AW9A91
5306-00-226-4839SUCCESSOR
BOLT,MACHINE
AEB02C312C50WA6AA1
5306-00-226-4840SUCCESSOR
BOLT,MACHINE
B1821BH031C375N
5306-00-227-0610SUCCESSOR
BOLT,MACHINE
5306-00-270-8275SUCCESSOR
BOLT,MACHINE
5306-00-299-2339SUCCESSOR
BOLT,MACHINE
5306-00-299-2380SUCCESSOR
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-174-9744?

NSN 5306-00-174-9744 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 5306-00-174-9744?

NSN 5306-00-174-9744 has 2 cross-referenced part numbers: FF-S-85 (Federal Specifications Promulgated by General Services Administration Washington DC), MIL-B-857 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5306-00-174-9744?

There are 12 known substitutes for 5306-00-174-9744: 5306-00-089-1425, 5306-00-225-8516, 5306-00-225-9095 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FF-S-85?

Key specifications for FF-S-85: Thread Direction: RIGHT-HAND; Thread Class: 2A A; Material: NICKEL ALLOY 400 OVERALL; Thread Quantity Per Inch: 20. 14 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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