S-93386A508 5/16"-18 x 1/2" ASME B18.3 Set Screws

Set Screws

0613FA00016 Set Screws
0613FA00016 Set Screws

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

Part No.
Part No. 0613FA00016
Equivalent to mcmaster :
93386A508

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 1/2"

Thread Parameters

Thread Type UNC
Thread Size 5/16"-18
Thread Diameter 0.313"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A

Tip & Drive Parameters

Tip Type Cup
Drive Style Hex
Drive Size 5/32"

Material & Strength

Material 400 Nickel
Hardness Not Rated

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior holding power with a cup point tip that bites into surfaces for secure, non-slip fastening in high-vibration environments.
  • Exceptional corrosion resistance from 400 Nickel material, ideal for harsh industrial settings and extending service life.
  • Precise Class 3A thread fit ensures tight tolerances and reliable engagement, reducing the risk of loosening under load.
  • Easy installation and removal with a 5/32" hex drive, allowing for efficient assembly and maintenance with standard tools.
  • Robust UNC coarse threading provides quick assembly and strong holding in a wide range of materials.
  • Compliance with ASME B18.3 standards guarantees consistent quality and interchangeability for engineering applications.
  • Headless design saves space and allows for flush mounting in confined or rotating assemblies.

Professional Applications & Engineering Value

This 5/16"-18 UNC set screw is engineered to address critical fastening challenges in industrial machinery and equipment. The 400 Nickel material offers excellent resistance to corrosion and wear, making it suitable for demanding environments like marine, chemical processing, and outdoor applications. Its headless design and cup point tip provide secure positioning without protruding, preventing interference in rotating components such as shafts, pulleys, and gears. The coarse thread and Class 3A fit ensure rapid installation and reliable performance under dynamic loads, reducing maintenance downtime. Ideal for use in heavy-duty set screws applications, this screw meets ASME B18.3 specifications, delivering consistent torque and holding power for precision assemblies.

Specification Summary & Compliance

This set screw features a 5/16"-18 UNC coarse thread with Class 3A thread fit for high precision and durability. It complies with ASME B18.3 manufacturing standards, ensuring reliable performance in industrial applications. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for global use.

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