S-92845A768 1/2"-13 x 5/8" ASME B18.3 Set Screws

Set Screws

0658FA00101 Set Screws
0658FA00101 Set Screws

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

Part No.
Part No. 0658FA00101
Equivalent to mcmaster :
92845A768

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 5/8"

Thread Parameters

Thread Type UNC
Thread Size 1/2"-13
Thread Diameter 0.5"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A

Tip & Drive Parameters

Tip Type Extended
Tip Length 0.13"
Tip Length Tolerance -0.005" to 0"
Tip Diameter 0.343"
Tip Diameter Tolerance -0.009" to 0"
Drive Style Hex
Drive Size 1/4"

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B80

Temperature & Environment

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

  • Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
  • Maximum holding power ensured by Class 3A thread fit and coarse UNC threads for secure, vibration-resistant fastening
  • Enhanced tip engagement with extended tip design providing deeper penetration and improved grip on mating surfaces
  • High-strength durability from Rockwell B80 hardness, maintaining structural integrity under heavy loads
  • Easy installation and removal with 1/4" hex drive, allowing efficient torque application in confined spaces
  • Reliable industrial compliance meeting ASME B18.3 standards for consistent quality and interchangeability
  • Environmental safety assurance through RoHS 3 and REACH compliance, suitable for regulated applications

Professional Applications & Engineering Value

This 1/2"-13 UNC hex drive set screw delivers exceptional engineering value in demanding industrial settings where vibration resistance and permanent positioning are critical. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for machinery exposed to moisture, chemicals, or outdoor conditions. The extended tip design ensures deeper material penetration, preventing component slippage in high-torque applications such as shaft collars, gears, and pulleys. With its Class 3A thread fit and coarse thread spacing, this headless set screw maintains precise alignment while resisting loosening under dynamic loads. The 1/4" hex drive facilitates quick installation in tight spaces, reducing assembly time while meeting ASME B18.3 specifications for reliability across automotive, manufacturing, and heavy equipment applications.

Specification Summary & Compliance

This set screw features precise Class 3A thread fit with 1/2"-13 UNC coarse threads and right-hand thread direction. Dimensions include 5/8" length with extended tip (0.13" length, 0.343" diameter) manufactured to tight tolerances. The component meets ASME B18.3 manufacturing specifications and demonstrates compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance control.

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