S-94567A180 4-40 x 7/16" Thumb Screws

Key Features & Benefits at a Glance

• Easy manual operation with a knurled round head design for superior grip without tools
• Lightweight yet durable performance from 6061 Aluminum with Rockwell B60 hardness
• High load-bearing capability supported by 40,000 psi tensile strength for reliable fastening
• Quick and secure installation with fully threaded 4-40 UNC coarse threads and Class 2A fit
• Stable seating and alignment due to the flared collar profile that resists loosening
• Wide industrial compatibility with right-hand threading conforming to UNC standards
• Safe for regulated environments with full RoHS 3 and REACH compliance

Professional Applications & Engineering Value

This 4-40 UNC thumb screw in 6061 Aluminum offers an optimal balance of strength and weight for frequent-adjustment applications. The knurled head ensures slip-resistant handling in tight spaces, reducing assembly time and tool dependency. Its fully threaded coarse UNC design provides rapid engagement and high resistance to vibration, ideal for electronics enclosures, machinery panels, and instrumentation. The flared collar enhances stability, preventing sinkage into softer materials. With a Rockwell B60 hardness and 40,000 psi tensile strength, it withstands repeated use without stripping, making it a cost-effective solution for maintenance-heavy industrial settings.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It is manufactured from 6061 Aluminum, fully threaded, and features a 3/8" head diameter and 7/16" length. Compliance includes RoHS 3 (2015/863/EU) with exemption 6(b)-II and REACH (EC 1907/2006), ensuring it meets environmental and safety regulations for global industrial use.