S-91318A650 3/8"-24 x 3/16" Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Exceptional thread precision with Class 3A fit and UNF fine threads ensures tight, secure, and vibration-resistant fastening.
• High mechanical strength backed by Rockwell B80 hardness, providing dependable holding power under load.
• Flush, space-saving design of the headless style with a hex drive allows for unobtrusive installation in confined spaces.
• Easy installation and removal using a standard 3/16" hex key, streamlining assembly and maintenance workflows.
• Compliance with major regulations including RoHS 3 and REACH, ensuring safety and environmental standards are met for global supply chains.
• Right-hand thread direction offers standard, intuitive tightening for consistent and reliable performance.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 3/8"-24 UNF Class 3A hex headless set screw addresses critical challenges in precision assembly and machinery. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, making it suitable for applications in automotive, aerospace, and marine components where exposure to moisture and chemicals is common. The fine thread spacing and Class 3A thread fit deliver superior clamping force and vibration resistance, preventing loosening in high-stress environments like rotating shafts or alignment fixtures. Its headless design with a hex drive allows for flush mounting, reducing protrusions and enhancing safety in moving parts. By integrating RoHS 3 and REACH compliance, this fastener supports sustainable manufacturing practices without compromising on Rockwell B80 hardness and durability, ensuring long-term performance in critical B2B applications.

Specification Summary & Compliance

This set screw adheres to precise inch system dimensions, including a thread size of 3/8"-24 UNF with fine thread spacing and a length of 3/16". It meets Class 3A thread fit tolerances for high accuracy and reliability. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it ensures environmental safety and suitability for global industrial markets.