PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILB857ASHIPSTYPE2GRADE5Bolt,machine

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5306-00-270-9393 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-270-9393 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-270-9393. Primary manufacturer part number: MILB857ASHIPSTYPE2GRADE5.
Features
  • Bolt,machine — FSC 5306
  • Grip Length: 0.625 INCHES NOMINAL IN
  • Head Style: HEXAGON
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Diameter: 0.312 INCHES IN
  • Features Provided: FINISHED HEAD
  • Thread Length: 0.875 INCHES MINIMUM IN
  • Thread Quantity Per Inch: 18
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 5306-00-270-9393, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 16 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-270-9393
Primary Part NumberMILB857ASHIPSTYPE2GRADE5
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Grip Length0.625 INCHES NOMINAL IN
Head StyleHEXAGON
Thread DirectionRIGHT-HAND
Nominal Thread Diameter0.312 INCHES IN
Features ProvidedFINISHED HEAD
Thread Length0.875 INCHES MINIMUM IN
Thread Quantity Per Inch18
Head Height0.203 INCHES NOMINAL IN
Hardness Rating23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Nondefinitive Spec/std Data2 TYPE AND 5 GRADE
MaterialSTEEL OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Minimum Tensile Strength120000 POUNDS PER SQUARE INCH LBS
Width Between Flats0.484 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Thread Class2A A
Fastener Length1.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5305-00-350-0703 INTERCHANGEABLE
Screw
5945-00-424-3872 INTERCHANGEABLE
Relay,electromagnetic
9150-01-586-8308 INTERCHANGEABLE
Lubricant,antiseiz
Cross-Reference Index
Part NumberManufacturer
MILB857ASHIPSTYPE2GRADE5 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SS16 Illinois Tool Works Inc. (USA)
SS16 Champion Spark Plug Co Devilbiss Co Div (USA)
Related Parts
5305-00-350-0703INTERCHANGEABLE
SCREW
5945-00-424-3872INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
9150-01-586-8308INTERCHANGEABLE
LUBRICANT,ANTISEIZ

Frequently Asked Questions

What is NSN 5306-00-270-9393?

NSN 5306-00-270-9393 is a Bolt,machine, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-270-9393?

NSN 5306-00-270-9393 has 3 cross-referenced part numbers: MILB857ASHIPSTYPE2GRADE5 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), SS16 (Illinois Tool Works Inc.), SS16 (Champion Spark Plug Co Devilbiss Co Div).

What NSN replaces 5306-00-270-9393?

There are 3 known substitutes for 5306-00-270-9393: 5305-00-350-0703, 5945-00-424-3872, 9150-01-586-8308. Verify interchangeability with system specifications before substitution.

What are the specifications of MILB857ASHIPSTYPE2GRADE5?

Key specifications for MILB857ASHIPSTYPE2GRADE5: Grip Length: 0.625 INCHES NOMINAL IN; Head Style: HEXAGON; Thread Direction: RIGHT-HAND; Nominal Thread Diameter: 0.312 INCHES IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-270-9393 still in active supply?

NSN 5306-00-270-9393 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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