PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B18.2.1Bolt,machine

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 5306-00-514-9536 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-514-9536 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-514-9536. Primary manufacturer part number: B18.2.1.
Features
  • Bolt,machine — FSC 5306
  • Width Between Flats: 0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
  • Features Provided: UNFINISHED HEAD
  • Nominal Thread Diameter: 0.500 INCHES IN
  • Head Height: 0.308 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
  • Fastener Length: 5.000 INCHES NOMINAL IN
  • Grip Length: 3.750 INCHES NOMINAL IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
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 5306-00-514-9536, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American National Standards Institute Incorporated Dba American National Standards Institute. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5306-00-514-9536
Primary Part NumberB18.2.1
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusCANCELLED
Width Between Flats0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Features ProvidedUNFINISHED HEAD
Nominal Thread Diameter0.500 INCHES IN
Head Height0.308 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
Fastener Length5.000 INCHES NOMINAL IN
Grip Length3.750 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Minimum Yield Strength36000 POUNDS PER SQUARE INCH LBS
Material Document and ClassificationSAE J429 GR1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Hardness Rating81.7 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM OVERALL
MaterialSTEEL OVERALL
Nondefinitive Spec/std Data1 TYPE AND 2 CLASS
Head StyleSQUARE
Minimum Tensile Strength60000 POUNDS PER SQUARE INCH LBS
Thread DirectionRIGHT-HAND
Thread Length1.250 INCHES MINIMUM IN
Thread Class2A A
Thread Quantity Per Inch13
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
No Item Name Available
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
5306-00-042-6922426922 SUCCESSOR
Bolt,machine
General Motors Llc Dba General Motors Llc
Bolt,machine
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
B18.2.1 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
FF-B-575 TY1CL2 General Services Administration Federal Supply Service (USA)
FF-B-575 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5306-00-973-5279SUCCESSOR
NO ITEM NAME AVAILABLE
5306-00-011-1195SUCCESSOR
BOLT,MACHINE
5306-00-013-1303SUCCESSOR
BOLT,MACHINE
5306-00-018-6682SUCCESSOR
BOLT,MACHINE
5306-00-019-1846SUCCESSOR
BOLT,MACHINE
5306-00-019-1857SUCCESSOR
BOLT,MACHINE
5306-00-042-6920SUCCESSOR
BOLT,MACHINE
5306-00-042-6922SUCCESSOR
BOLT,MACHINE
426922
5306-00-042-6923SUCCESSOR
BOLT,MACHINE
5306-00-042-6934SUCCESSOR
BOLT,MACHINE
5306-00-042-6936SUCCESSOR
BOLT,MACHINE
5306-00-042-6937SUCCESSOR
BOLT,MACHINE
426937

Frequently Asked Questions

What is NSN 5306-00-514-9536?

NSN 5306-00-514-9536 is a Bolt,machine, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-514-9536?

NSN 5306-00-514-9536 has 3 cross-referenced part numbers: B18.2.1 (American National Standards Institute Incorporated Dba American National Standards Institute), FF-B-575 TY1CL2 (General Services Administration Federal Supply Service), FF-B-575 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5306-00-514-9536?

There are 12 known substitutes for 5306-00-514-9536: 5306-00-973-5279, 5306-00-011-1195, 5306-00-013-1303 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B18.2.1?

Key specifications for B18.2.1: Width Between Flats: 0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Features Provided: UNFINISHED HEAD; Nominal Thread Diameter: 0.500 INCHES IN; Head Height: 0.308 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-514-9536 still in active supply?

NSN 5306-00-514-9536 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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