S-91375A617 3/8"-16 x 3/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit for precise, vibration-resistant assemblies in demanding applications
• Exceptional durability from Rockwell C45 hardness alloy steel, resisting wear and deformation under high stress
• Enhanced corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Secure, flush mounting due to headless design and cup tip, preventing component movement and surface protrusion
• Easy installation and removal with 3/16" hex drive, allowing high torque application without stripping
• Reliable coarse threading (UNC) for quick assembly and strong engagement in a variety of materials
• Broad compliance with ASME B18.3, ASTM F912, RoHS 3, and REACH, ensuring safety and regulatory acceptance

Professional Applications & Engineering Value

This 3/8"-16 UNC hex headless set screw is engineered to solve critical fastening challenges in industrial machinery, automotive components, and precision equipment. The black-oxide alloy steel construction provides excellent strength and corrosion resistance, reducing maintenance needs in humid or chemically exposed settings. Its headless design and cup tip ensure a secure, flush fit that minimizes vibration loosening and component shift, crucial for rotating parts and alignment-sensitive assemblies. With a Class 3A thread fit and coarse thread spacing, it offers rapid installation and reliable clamping force, making it ideal for set screw applications where space is constrained and high torque is required. The 3/16" hex drive allows for efficient tool engagement, enhancing productivity in automated or manual assembly lines.

Specification Summary & Compliance

This set screw features a 3/8"-16 UNC thread with Class 3A precision tolerance and coarse thread spacing for robust performance. It is manufactured from alloy steel with a black-oxide finish and Rockwell C45 hardness to meet rigorous industrial standards. The product complies with ASME B18.3 and ASTM F912 specifications, and is verified as RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental safety and regulatory adherence.