S-91745A540 1/4"-20 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Tool-free installation with a spade head design for quick manual tightening and loosening in tight spaces
• Corrosion-resistant performance thanks to 18-8 stainless steel construction, ideal for humid or demanding environments
• Reliable coarse threading (UNC) ensures faster assembly and reduced cross-threading risks compared to fine threads
• Precise Class 2A thread fit provides consistent engagement and vibration resistance in repetitive applications
• Fully threaded shank offers maximum grip and adjustability across the entire 3/4" length
• Compliance with RoHS 3 and REACH guarantees safe use in regulated industrial and electronic assemblies
• Durable spade head shape enhances grip and torque application without specialized tools

Professional Applications & Engineering Value

This 1/4"-20 spade head thumb screw in 18-8 stainless steel addresses common industrial challenges where speed, corrosion resistance, and tool-free access are critical. The UNC coarse thread design allows for rapid installation in equipment panels, electronic enclosures, and machinery guards, minimizing downtime. Its fully threaded body ensures secure fastening in varying material thicknesses, while the spade head offers ergonomic handling for frequent adjustments. Ideal for maintenance-heavy sectors like aerospace, automotive, and electronics, this screw eliminates the need for drivers, reducing the risk of damage in sensitive assemblies and enhancing workflow efficiency in confined spaces.

Specification Summary & Compliance

This thumb screw features a 1/4"-20 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy and reliable performance. It is manufactured from 18-8 stainless steel and is fully threaded along its 3/4" length. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.