S-99607A215 4-40 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual grip and torque application with knurled round head design for secure handling without tools
• Superior corrosion resistance and durability using 18-8 stainless steel material, ideal for harsh industrial environments
• High mechanical strength and load-bearing capacity with 80,000 psi tensile strength and Rockwell B85 hardness
• Reliable and precise thread engagement featuring UNC coarse threads with Class 2A fit for consistent fastening performance
• Quick and easy installation with fully threaded right-hand design and flared collar for stable seating
• Broad compatibility and secure fastening in 1" length for various panel and assembly thicknesses
• Compliance with environmental and safety standards including RoHS 3 and REACH for global industrial use

Professional Applications & Engineering Value

This 4-40 UNC thumb screw delivers exceptional value in applications requiring frequent adjustments or tool-free access, such as electronic enclosures, machinery panels, and instrumentation. The 18-8 stainless steel construction ensures long-term reliability in corrosive or high-moisture settings, while the knurled head provides a non-slip surface for efficient manual operation. With coarse threading and Class 2A fit, it offers rapid installation and secure holding power, reducing assembly time and maintenance costs. The fully threaded design and flared collar enhance stability, making it a preferred choice for industrial fastening where durability and regulatory compliance are critical.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with Class 2A thread fit for precise dimensional accuracy. It is manufactured from 18-8 stainless steel and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for regulated industrial applications.