S-91746A780 5/16"-18 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced grip and torque application with knurled round head design, reducing slippage during manual tightening
• Superior corrosion resistance and durability from 18-8 stainless steel construction, ideal for harsh environments
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and repeated use
• Precise thread engagement with Class 2A fit and UNC coarse threads for quick assembly and vibration resistance
• Optimized low-profile head (1/4" height) saves space while maintaining easy hand-operated access
• Controlled fastening depth through partial threading, preventing over-tightening in sensitive applications
• Compliance with RoHS 3 and REACH regulations guarantees safe use in regulated industrial sectors

Professional Applications & Engineering Value

Engineered for industrial equipment, machinery panels, and electronic enclosures, this 5/16"-18 UNC thumb screw addresses critical assembly challenges. The 18-8 stainless steel material provides excellent resistance to oxidation and chemicals, extending service life in demanding conditions. Its low-profile knurled head offers secure manual operation without tools, speeding up maintenance and adjustments. The coarse UNC threads and partial threading design ensure rapid installation and controlled clamping force, reducing the risk of component damage. Ideal for applications requiring frequent access, such as access panels, jigs, and prototypes, it combines user convenience with robust mechanical performance.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with Class 2A thread fit for consistent dimensional accuracy. Key specifications include a 5/16"-18 thread size, 1" length, and 3/4" head diameter. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental and safety standards for industrial use.