S-93585A180 1/4"-20 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Superior manual operation with knurled head texture providing excellent grip without tools
• Exceptional corrosion resistance from 18-8 stainless steel construction for long service life
• High tensile strength of 80,000 psi ensures reliable performance under demanding conditions
• Precision Class 2A thread fit guarantees smooth installation and consistent engagement
• Optimized ergonomic design with high-profile round head for comfortable hand-tightening
• Full threading capability allows complete engagement along the entire 1/2" length
• Environmental compliance with RoHS 3 and REACH regulations for safe industrial use

Professional Applications & Engineering Value

This 1/4-20 UNC thumb screw delivers exceptional value in applications requiring frequent adjustment or tool-free installation. The 18-8 stainless steel construction provides excellent corrosion resistance in harsh environments, while the Rockwell B83 hardness ensures durability against wear and deformation. The knurled head texture combined with the high-profile round head design offers superior grip for manual operation, eliminating the need for tools in assembly lines, electronic enclosures, and machinery access panels. The coarse UNC thread facilitates quick installation and removal, making it ideal for applications requiring regular maintenance or adjustments in industrial settings, from manufacturing equipment to instrumentation panels.

Specification Summary & Compliance

This thumb screw features precision 1/4"-20 UNC coarse threads with Class 2A thread fit for consistent performance and easy assembly. The fastener maintains dimensional accuracy with 5/8" head diameter and 1/2" length in full threading configuration. Manufacturing complies with industry standards for right-hand thread direction and meets regulatory requirements including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety in industrial applications.