S-91185A402 1/4"-20 x 5/8" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced grip and comfort with knurled Acetal Plastic head for easy manual tightening without tools
• Corrosion-resistant 18-8 Stainless Steel construction ensures long-lasting performance in demanding environments
• Precise Class 3A thread fit delivers superior engagement and vibration resistance in coarse UNC threading
• Low-profile round head design saves space while providing ample surface area for secure handling
• Wide temperature tolerance (32° to 180°F) maintains integrity across various operating conditions
• Full threading along 5/8" length enables deep, secure fastening in a wide range of material thicknesses
• Compliance with RoHS 3 and REACH standards ensures environmental safety and regulatory acceptance

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 critical challenges in industrial assembly and maintenance. The Class 3A UNC coarse threads provide rapid installation and high vibration resistance, ideal for equipment panels, electronic enclosures, and machinery requiring frequent access. The fully threaded 1/4"-20 design ensures consistent clamping force across varying material depths, while the temperature-stable components prevent degradation in environments ranging from freezing to elevated temperatures. This engineered solution eliminates the need for tools in quick-disconnect applications, reducing downtime in manufacturing, telecommunications, and automotive sectors.

Specification Summary & Compliance

Manufactured to precise Class 3A thread fit standards with 1/4"-20 UNC coarse threads and right-hand threading. Features a 3/4" diameter knurled Acetal Plastic head with low-profile configuration and 5/8" fully threaded length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.