S-94567A420 10-32 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual grip with knurled round head design for tool-free tightening and loosening in tight spaces
• Superior corrosion resistance and lightweight performance from 6061 aluminum construction, ideal for weight-sensitive applications
• Precise thread engagement and reliable fastening with 10-32 UNF fine threads and Class 2A fit for minimal backlash
• High mechanical durability supported by Rockwell B60 hardness and 40,000 psi tensile strength
• Secure seating and alignment due to the flared collar design, preventing over-insertion
• Full regulatory compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Versatile right-hand threading compatible with standard UNF nuts and tapped holes

Professional Applications & Engineering Value

This 6061 aluminum thumb screw delivers exceptional value in electronics, prototyping, and light machinery assemblies where frequent adjustments are needed. The knurled head ensures a firm, non-slip grip—eliminating the need for tools and reducing assembly time. Its 10-32 UNF fine thread offers higher resistance to vibration loosening compared to coarse threads, while the Class 2A thread fit guarantees consistent engagement without cross-threading. The flared collar provides a stable bearing surface, distributing clamp load evenly and protecting sensitive components. Made from RoHS and REACH compliant aluminum, it is safe for consumer electronics, laboratory equipment, and aerospace accessories, combining durability with regulatory peace of mind.

Specification Summary & Compliance

This thumb screw adheres to UNF thread standards with a Class 2A tolerance for precise fit. It is fully threaded, with a length of 1/2" and thread size 10-32. The screw meets RoHS 3 (2015/863/EU) under exemption 6(b)-II and is REACH (EC 1907/2006) compliant, ensuring it is free of hazardous substances as per the latest regulatory updates.