S-93585A290 5/16"-18 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Superior manual grip and torque application with knurled round head and high-profile design for slip-resistant operation without tools
• Excellent corrosion resistance and durability thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
• High mechanical strength under load with 80,000 psi tensile strength and Rockwell B83 hardness for reliable, long-term performance
• Precise and secure thread engagement with Class 2A UNC coarse threads ensuring consistent fit and vibration resistance
• Quick installation and adjustment through fully threaded design and right-hand thread direction for efficient manual assembly
• Broad compatibility with standard components using 5/16"-18 UNC thread size, suitable for various industrial equipment
• Environmental and regulatory compliance meeting RoHS 3 and REACH standards for safe use in regulated applications

Professional Applications & Engineering Value

This 5/16"-18 UNC thumb screw delivers exceptional value in applications requiring frequent adjustments or tool-free access. The 18-8 stainless steel material provides inherent corrosion resistance, reducing maintenance in humid or chemical-exposed settings like electronics enclosures, machinery panels, and laboratory equipment. The fully threaded design and coarse UNC threads enable rapid installation and secure holding power, while the knurled round head offers enhanced grip even with gloved hands. Engineers benefit from the high-profile head and Class 2A thread fit, which prevent cross-threading and ensure repeatable fastening in assembly lines, prototyping, and field service operations.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with Class 2A tolerance for consistent dimensional accuracy. Key specifications include a 5/16"-18 thread size, 3/4" length, and 0.313" thread diameter. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial and commercial use.