S-94355A540 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, ideal for harsh environments and reducing replacement frequency.
- Exceptional holding power and vibration resistance due to Class 3A thread fit, ensuring secure, long-term fastening in demanding applications.
- High-strength durability with Rockwell B80 hardness, providing reliable performance under mechanical stress.
- Easy installation and removal using a standard 1/8" hex key, minimizing assembly time and tool requirements.
- Reliable flat tip design for maximum surface contact and minimal component damage during clamping.
- Wide industrial compatibility with UNC coarse threads, facilitating quick assembly and disassembly.
- Compliance with global standards including ASME B18.3, RoHS, and REACH, ensuring safety and environmental responsibility.
Professional Applications & Engineering Value
This 1/4"-20 UNC Class 3A hex drive set screw is engineered to address critical challenges in industrial fastening, such as loosening under vibration and corrosion in aggressive settings. The 18-8 Stainless Steel material offers excellent resistance to rust and chemicals, extending service life in machinery, automotive, and outdoor equipment. Its headless design and flat tip ensure flush mounting and secure positioning of components like gears and pulleys on shafts, preventing slippage. The coarse thread and right-hand direction enable rapid installation, while the hex drive provides high torque capability without stripping, making it a reliable choice for maintenance and production lines where precision and durability are paramount.
Specification Summary & Compliance
This set screw features a 1/4"-20 UNC coarse thread with Class 3A fit for precise dimensional accuracy and tight tolerances. It adheres to ASME B18.3 manufacturing specifications, ensuring consistent quality and performance. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial applications without hazardous substances.
