S-94355A535 1/4"-20 x 3/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life
• Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash for reliable component positioning
• High-strength Rockwell B80 hardness provides excellent resistance to wear, deformation, and stripping under load
• Compact hex headless design allows for flush installation in confined spaces without protruding components
• 1/8" hex drive offers high torque transmission and easy installation with standard tools, reducing assembly time
• Coarse UNC thread enables quick assembly and disassembly while maintaining strong holding power
• Full regulatory compliance with ASME B18.3, RoHS 3, and REACH standards for safe, quality-assured industrial use

Professional Applications & Engineering Value

This 1/4"-20 UNC Class 3A set screw delivers critical engineering solutions for industrial applications requiring secure component fixation without protrusions. The 18-8 stainless steel material provides exceptional corrosion resistance, making it suitable for machinery, automotive assemblies, and outdoor equipment exposed to moisture and chemicals. The hex headless design and flat tip ensure flush mounting in pulleys, gears, and collars, preventing interference in rotating systems. With its coarse UNC thread and Class 3A fit, it maintains vibration resistance and positional accuracy in high-stress environments. The 1/8" hex drive accommodates standard wrenches for efficient maintenance, reducing downtime in production lines and precision equipment.

Specification Summary & Compliance

This set screw features a 1/4"-20 UNC coarse thread with Class 3A thread fit for precise dimensional accuracy and tight tolerances. It is manufactured in compliance with ASME B18.3 specifications, ensuring consistent quality and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use. Additional specifications include a 3/8" length, right-hand thread direction, and Rockwell B80 hardness for reliable mechanical properties.