S-92785A581 1/2"-13 x 3/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Exceptional holding power provided by the 90° cone point that digs deep into mating surfaces for secure, permanent positioning
• Precision thread fit with Class 3A tolerance ensuring reliable engagement and vibration resistance in critical assemblies
• Heavy-duty durability backed by Rockwell B80 hardness for consistent performance under mechanical stress
• Easy installation and removal with 1/4" hex drive design that accommodates standard tools without head interference
• Industry-standard compatibility through UNC coarse threading that prevents cross-threading and speeds assembly processes
• Regulatory compliance assurance meeting ASME B18.3 specifications while being RoHS 3 and REACH compliant for global applications

Professional Applications & Engineering Value

This hex headless set screw delivers critical engineering solutions where space constraints and vibration resistance are paramount. The 18-8 stainless steel composition provides excellent corrosion resistance for outdoor equipment, marine applications, and food processing machinery where moisture exposure is common. The 90° cone point creates permanent positioning in pulleys, gears, and collars by concentrating force on a small contact area, preventing slippage even under extreme torque. The Class 3A thread fit ensures precise engagement with mating components, eliminating play in precision machinery, automotive systems, and industrial equipment. With its headless design and 1/4" hex drive, this set screw installs flush in confined spaces while providing sufficient torque transmission for secure fastening.

Specification Summary & Compliance

This precision fastener features 1/2"-13 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and reliable performance. Manufacturing complies with ASME B18.3 specifications governing dimensional standards for socket set screws. The product meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) regulations concerning chemical safety. Additional specifications include right-hand thread direction, 0.5" thread diameter, 3/4" length, and Rockwell B80 hardness rating.