S-91185A807 1/4"-20 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Easy hand-tightening operation with comfortable multi-lobe head design requiring no tools
• Superior corrosion resistance provided by 18-8 stainless steel construction for long service life
• Excellent grip and durability from black acetal plastic head that withstands repeated use
• Precise thread engagement with Class 3A fit UNC coarse threads ensuring secure fastening
• Wide temperature compatibility with head operating range from 32° to 180° F for various environments
• Full threading coverage along the 3/4" length for maximum adjustment and holding power
• Environmental compliance meeting RoHS 3 and REACH standards for safe industrial use

Professional Applications & Engineering Value

These 1/4"-20 thumb screws combine the corrosion resistance of 18-8 stainless steel with the ergonomic benefits of a black acetal plastic multi-lobe head, creating an ideal solution for applications requiring frequent adjustments without tools. The fully threaded design with UNC coarse spacing and Class 3A thread fit provides reliable fastening in industrial equipment, electronic enclosures, and machinery where vibration resistance is critical. The large 1 1/2" head diameter with multi-lobe profile ensures comfortable manual operation even with gloves, while the right-hand thread direction offers intuitive tightening for operators. These thumb screws effectively eliminate the need for dedicated tools in maintenance scenarios, reducing downtime and improving operational efficiency in manufacturing, automation, and electronic assembly applications.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit for superior engagement and UNC coarse thread spacing (1/4"-20) ensuring reliable performance. The screws feature fully threaded construction along the 3/4" length with right-hand thread direction. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees these fasteners meet current industry standards for restricted substances, making them suitable for various industrial and commercial applications requiring certified components.