S-91185A430 1/4"-20 x 2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced grip and comfort with knurled acetal plastic head for secure hand-tightening without tools
• Superior corrosion resistance from 18-8 stainless steel construction, ideal for demanding environments
• Precise thread engagement with Class 3A fit and UNC coarse threads ensuring reliable fastening
• Space-saving low-profile design allowing installation in tight or restricted access areas
• Durable performance across a wide temperature range from 32° to 180°F
• Partial threading providing optimal balance between grip length and installation speed
• Regulatory compliance meeting RoHS 3 and REACH standards for safe industrial use

Professional Applications & Engineering Value

This low-profile thumb screw combines the corrosion resistance of 18-8 stainless steel with the exceptional grip of a knurled acetal plastic head, solving common industrial challenges where tool-free adjustments are required. The Class 3A thread fit with UNC coarse threading ensures rapid installation and secure fastening in vibration-prone applications. Engineers value this partially threaded design for electronic enclosures, machinery access panels, and laboratory equipment where frequent maintenance access is necessary. The right-hand thread direction and 3/4" head diameter provide intuitive operation while the temperature-resistant materials maintain performance across various operating conditions.

Specification Summary & Compliance

This thumb screw features precision 1/4"-20 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy. The partially threaded design provides 1" minimum thread length on a 2" overall screw. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material transparency for industrial and commercial applications.