S-92158A426 1/4"-20 x 3/8" 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 316 Stainless Steel construction, ideal for harsh or chemical environments.
- Exceptional thread engagement and holding power provided by the 1/4"-20 UNC coarse thread and Class 3A fit for secure, vibration-resistant fastening.
- High-strength performance with a Rockwell B80 hardness rating, ensuring durability and resistance to wear.
- Flush, unobtrusive installation due to the headless hex design, perfect for applications where a low profile is critical.
- Easy and secure installation using a standard 1/8" hex key, allowing for high torque application without slippage.
- Reliable compliance with major industry standards including ASME B18.3, ensuring consistent quality and interchangeability.
- Environmentally responsible manufacturing with compliance to RoHS 3 and REACH regulations.
Professional Applications & Engineering Value
This 1/4"-20 UNC Class 3A set screw is engineered to solve critical challenges in industrial assembly and machinery. The use of 316 Stainless Steel provides excellent resistance to corrosion from chemicals, saltwater, and atmospheric exposure, making it a durable choice for demanding environments like marine equipment, chemical processing plants, and food machinery. The coarse UNC thread and precise Class 3A fit ensure rapid assembly and a tight, secure fit that resists loosening under vibration, a common failure point in dynamic systems. The headless hex design with a flat tip allows for a completely flush mount, preventing interference in pulleys, gears, and collars. This combination of material, thread form, and design delivers reliable, long-term fastening performance for OEMs and maintenance teams.
Specification Summary & Compliance
This set screw features a 1/4"-20 UNC thread with a Class 3A tolerance for a tight, precise fit. It is manufactured in compliance with the ASME B18.3 standard, ensuring dimensional accuracy and performance reliability. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations.
