S-94173A332 7/16"-14 x 5" 12-Point Screws

12-Point Screws

0806FA00140 12-Point Screws
0806FA00140 12-Point Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0806FA00140
Equivalent to mcmaster :
94173A332

Basic Information

Screw Features Flanged
System of Measurement Inch

Head Parameters

Head Type 12-Point
Head Width 1/2"
Head Height 3/8"

Dimensions

Length 5"
Flange Diameter 0.75"

Thread Parameters

Thread Type UNC
Thread Size 7/16"-14
Thread Diameter 0.4375"
Thread Spacing Coarse
Min Thread Length 1 1/4"
Thread Direction Right Hand
Thread Fit Class 2A
Threading Partially Threaded

Tip & Drive Parameters

Drive Style External 12-Point
Drive Size 7/16"

Material & Strength

Material Black-Oxide Alloy Steel
Hardness Rockwell C38
Tensile Strength 170000 psi
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
  • Superior corrosion resistance from the black-oxide finish extends service life in harsh industrial environments, minimizing maintenance needs.
  • Flanged design provides a larger bearing surface for improved load distribution and eliminates the need for separate washers, saving assembly time.
  • External 12-point drive allows for high-torque installation with standard tools, enhancing installation efficiency and reducing slippage.
  • Class 2A thread fit ensures easy assembly and interchangeability, speeding up production lines while maintaining secure connections.
  • Partially threaded shank offers optimal grip and clamping force in jointed materials, preventing loosening under vibration.
  • Coarse UNC threads enable quick engagement and are less prone to clogging in dirty or debris-filled conditions, ideal for rugged use.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 12-point screw combines black-oxide alloy steel with a Rockwell C38 hardness to withstand extreme mechanical stresses and resist corrosion, addressing common issues like fastener degradation in outdoor or chemical-exposed environments. The external 12-point drive and coarse UNC threading facilitate rapid, secure installations in heavy machinery, automotive assemblies, and structural frameworks, where vibration resistance and high tensile strength are critical. Its flanged and partially threaded design ensures even pressure distribution and reliable clamping, reducing the need for additional components and streamlining maintenance in high-strength fastener applications.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy, ensuring compatibility and ease of use. It meets industry manufacturing specifications for alloy steel components, with a tensile strength of 170,000 psi and hardness of Rockwell C38. The product complies with relevant standards for heavy-duty industrial screws, including RoHS and REACH environmental directives, supporting safe and sustainable operations in various engineering sectors.

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