S-94105A353 1/4"-20 x 1 1/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Exceptional holding power from Rockwell C45 hardness alloy steel, preventing deformation under heavy loads
• Precise Class 3A thread fit ensures secure fastening with minimal backlash in critical assemblies
• Space-saving headless design allows flush mounting where clearance is limited
• Quick installation with standard 1/8" hex drive, reducing assembly time and tool requirements
• Reliable performance in high-vibration applications due to coarse UNC thread and flat tip design
• Regulatory compliance meets international standards for restricted substances and engineering specifications

Professional Applications & Engineering Value

This black-oxide alloy steel set screw solves critical challenges in precision machinery and permanent assemblies. The Class 3A UNC coarse thread maintains clamping force in high-vibration environments like motor shafts and gear systems, while the headless configuration enables seamless integration in tight spaces. Engineered with Rockwell C45 hardness, it resists wear in repeated adjustment applications. The black-oxide surface treatment provides essential corrosion protection without dimensional changes, making it ideal for automotive, manufacturing, and electrical enclosures where permanent fastening solutions require both durability and chemical resistance.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with 1/4"-20 UNC Class 3A threads and precise 1-1/4" length. Complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety in global supply chains. The flat tip design and right-hand thread direction conform to industrial standards for set screw applications.