S-97705A647 1/4"-28 x 3/16" QQ-P-35, MS51023-60 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with fine thread spacing and Class 3A thread fit for maximum engagement and vibration resistance in demanding applications.
• Excellent corrosion resistance provided by 18-8 Stainless Steel material, ensuring long-term reliability and durability in harsh environments.
• Secure and efficient installation with the 1/8" hex drive design, allowing for high torque application without the risk of tool slippage.
• Reliable component positioning thanks to the cup tip design, which bites into the mating surface to prevent unwanted movement.
• Broad industrial compliance meeting Fed. Spec. QQ-P-35 (MS51023-60), RoHS 3, and REACH, ensuring material safety and regulatory acceptance.
• Space-saving headless design ideal for applications where a flush surface is required or clearance is limited.
• Precision-engineered right-hand UNF threads for consistent performance and compatibility with standard industrial components.

Professional Applications & Engineering Value

This 1/4"-28 UNF Class 3A hex headless set screw is engineered to address critical challenges in industrial assembly, such as component slippage under vibration and corrosion-induced failure. Manufactured from 18-8 Stainless Steel, it offers inherent resistance to rust and oxidation, making it suitable for machinery, automotive, and outdoor equipment exposed to moisture or chemicals. The fine thread spacing and Class 3A thread fit provide a tighter, more precise engagement, significantly enhancing clamping force and reducing the risk of loosening in high-stress environments. The hex drive and headless design facilitate easy installation in confined spaces while maintaining a clean, unobtrusive profile. Ideal for securing gears, pulleys, and collars onto shafts, this set screw delivers reliable, long-term fastening solutions that minimize maintenance and downtime.

Specification Summary & Compliance

This set screw features a 1/4"-28 UNF fine thread with Class 3A thread fit, ensuring high precision and tight tolerances for superior performance. It complies with Fed. Spec. QQ-P-35 (MS51023-60) for manufacturing consistency and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for hazardous substance restrictions.