S-91688A216 1/4"-20 x 3/4" Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments
• Enhanced holding power through Rockwell C54 hardness, providing excellent resistance to wear and deformation under heavy loads
• Secure fastening without marring thanks to the permanent 304 stainless steel swivel tip with 9° maximum angle
• Quick installation and removal with hex drive design and coarse UNC threads for efficient assembly in time-sensitive operations
• Precise thread engagement with Class 2A fit, ensuring consistent performance and reducing the risk of cross-threading
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting global environmental and safety requirements
• Space-saving headless design allowing flush mounting in applications where protruding fastener heads are not feasible

Professional Applications & Engineering Value

This 1/4"-20 x 3/4" hex headless set screw delivers exceptional engineering value for industrial applications requiring reliable shaft positioning and component security. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for machinery exposed to moisture, chemicals, or outdoor elements. The permanent swivel tip with 304 stainless steel contact surface prevents damage to precision shafts while maintaining consistent clamping force, eliminating the need for additional tip components. With UNC coarse threads and Class 2A fit, installation is streamlined while ensuring secure engagement in pulleys, collars, and gears. This set screw solves critical challenges in manufacturing, automation, and mechanical systems where vibration resistance, material compatibility, and long-term performance are paramount.

Specification Summary & Compliance

This set screw features precision UNC 1/4"-20 coarse threads with Class 2A thread fit for consistent dimensional accuracy. Manufactured from 18-8 stainless steel with Rockwell C54 hardness, it meets industry standards for mechanical fasteners. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.