S-93585A193 1/4"-20 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Superior manual grip and torque application with a 5/8" diameter high-profile round head featuring deep knurling, eliminating the need for tools in frequent adjustments.
• Exceptional corrosion resistance and durability provided by 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• High mechanical strength and reliability with an 80,000 psi tensile strength and Rockwell B83 hardness, ensuring the screw withstands heavy loads without stripping or failing.
• Easy and quick installation due to the fully threaded 1/4"-20 UNC coarse thread design and Class 2A thread fit, offering smooth engagement and consistent performance.
• Wide compatibility with standard components using right-hand UNC coarse threads, making it a versatile choice for various assembly and fastening applications.
• Compliance with stringent environmental regulations, being RoHS 3 and REACH compliant, ensures safe use in regulated industries and global markets.

Professional Applications & Engineering Value

This 1/4"-20 knurled thumb screw is engineered to address common challenges in industrial settings, such as the need for tool-free, rapid adjustments in machinery, enclosures, and electronic panels. The 18-8 Stainless Steel material offers excellent resistance to rust and corrosion, reducing maintenance downtime in humid or corrosive environments. The high-profile round head with deep knurling provides a secure grip even with oily or gloved hands, enhancing operator safety and efficiency. Its fully threaded UNC coarse thread and Class 2A thread fit ensure reliable engagement and vibration resistance, making it ideal for applications in automotive, aerospace, and manufacturing where precision and durability are critical. This design minimizes the risk of cross-threading and simplifies assembly, saving time and labor costs in high-volume production lines.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent tolerance and a 1/4"-20 UNC coarse thread with right-hand direction. It is manufactured from 18-8 Stainless Steel with a tensile strength of 80,000 psi and Rockwell B83 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial use.