S-91375A833 3/4"-10 x 3/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating for extended service life in harsh industrial environments
• Maximum torque transmission through 3/8" hex drive design preventing tool slippage during installation
• Precision Class 3A thread fit ensuring secure fastening with minimal backlash in critical assemblies
• Enhanced holding power from cup point design that creates permanent seating in shaft applications
• Exceptional durability with Rockwell C45 hardness maintaining structural integrity under heavy loads
• Reliable performance in right-hand coarse thread (UNC) configurations for quick assembly operations
• Space-saving headless design allowing flush mounting where clearance is limited

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical engineering solutions for industrial machinery and precision equipment. The Class 3A thread fit with UNC coarse threading provides exceptional vibration resistance in high-torque applications, while the cup point tip bites securely into materials for permanent positioning of gears, pulleys, and collars. The Rockwell C45 hardness ensures the 3/4"-10 set screw maintains its structural integrity under repetitive stress cycles. Engineered for hex drive compatibility, it enables efficient installation in confined spaces where traditional headed fasteners cannot operate, making it ideal for manufacturing, automotive, and heavy equipment sectors requiring reliable shaft securing solutions.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNC 3/4"-10 coarse thread spacing. This headless set screw features black-oxide alloy steel construction with Rockwell C45 hardness rating. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across global industrial applications.