S-91830A636 5/16"-18 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Effortless hand-tightening and adjustment thanks to the knurled round head design for maximum grip
• High mechanical strength and durability with 80,000 psi tensile strength and Rockwell B83 hardness
• Reliable and coarse threading with 5/16"-18 UNC Class 2A fit for quick assembly and vibration resistance
• Full-length threading provides consistent engagement and holding power along the entire 3/4" length
• Compliant with major environmental regulations including RoHS 3 and REACH for safe, global use
• Raised head profile offers enhanced clearance and easier access in tight spaces

Professional Applications & Engineering Value

This 18-8 stainless steel thumb screw is engineered to solve common industrial challenges where tool-free, frequent adjustments are required. The knurled round head provides a secure, non-slip grip even with oily gloves, reducing installation time and improving operator safety. Its fully threaded design and coarse UNC thread ensure rapid engagement and high resistance to loosening under vibration, making it perfect for securing panels, access doors, and machinery guards. The raised profile and right-hand thread offer intuitive operation in confined spaces, while the superior material resists rust and corrosion in demanding environments like manufacturing, electronics, and outdoor equipment.

Specification Summary & Compliance

This thumb screw adheres to Class 2A thread fit for consistent, reliable assembly and features a 5/16"-18 UNC coarse thread with a right-hand direction. Manufactured from 18-8 Stainless Steel, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and suitability for global industrial markets.