S-91745A546 1/4"-20 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Tool-free installation with a comfortable 1/2" high spade head for quick hand-tightening in hard-to-reach areas
• Superior corrosion resistance from 18-8 stainless steel construction, ideal for humid or chemical environments
• Maximum thread engagement with full UNC coarse threading ensuring secure fastening in various materials
• Precise Class 2A thread fit providing reliable, consistent performance with standard mating components
• Wide 23/32" head offers enhanced grip surface for increased tightening torque and user comfort
• Regulatory compliance with RoHS 3 and REACH standards for safe use across industrial applications
• Right-hand thread design compatible with standard assembly procedures and replacement parts

Professional Applications & Engineering Value

This 1/4"-20 spade head thumb screw delivers exceptional value in applications requiring frequent adjustments or tool-free maintenance. The 18-8 stainless steel construction provides reliable corrosion resistance for electrical enclosures, machinery guards, and outdoor equipment where environmental factors degrade ordinary fasteners. The fully threaded UNC coarse spacing ensures maximum pull-out resistance in softer materials like aluminum or plastic panels, while the generous spade head design allows operators to achieve sufficient clamping force without specialized tools. Particularly valuable in production environments where quick access panels require regular servicing, this thumb screw eliminates lost tools and reduces maintenance downtime while maintaining industrial safety standards through its compliant manufacturing.

Specification Summary & Compliance

This thumb screw features 1/4"-20 UNC coarse threads with Class 2A thread fit tolerances for consistent mating with standard components. The fully threaded 1-1/2" length provides complete engagement depth, while the spade head measures 1/2" in height and 23/32" in width. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance adherence for industrial applications.