S-92311A537 1/4"-20 x 1/2" ASME B18.3 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-lasting performance in harsh environments
- Exceptional holding power due to the cup point design that bites into shafts for secure, non-slip fastening
- Precise thread engagement with Class 3A fit for tighter tolerances and reliable assembly in critical applications
- High durability backed by Rockwell B80 hardness, providing excellent resistance to wear and deformation
- Easy installation and removal using a standard 1/8" hex key, saving time and reducing tooling requirements
- Wide industrial compatibility with UNC coarse threads and right-hand direction for common machinery and equipment
- Regulatory peace of mind through compliance with RoHS 3 and REACH, meeting strict environmental and safety standards
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 1/4"-20 UNC Class 3A hex headless set screws deliver reliable torque transmission and vibration resistance in machinery, automotive, and aerospace assemblies. The 18-8 stainless steel material combats rust and chemical exposure, while the cup point maximizes grip on rotating components like shafts and collars, preventing loosening under dynamic loads. With a coarse thread spacing and right-hand thread direction, they simplify installation in tight spaces, reducing assembly errors and maintenance downtime. Ideal for permanent or semi-permanent fastening, these screws ensure consistent performance in high-stress applications, from conveyor systems to precision tools.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 specifications, with precise UNC thread form and Class 3A thread fit for optimal dimensional accuracy. It features a 1/4"-20 thread size, 1/2" length, and 1/8" hex drive, ensuring compatibility with standard components. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and health safety requirements for global industrial use.
