S-94567A480 1/4"-20 x 3/8" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced Grip and Easy Handling: Knurled head texture provides superior slip resistance, allowing for quick manual tightening and loosening without tools in industrial settings.
• Lightweight and Corrosion-Resistant: Made from 6061 aluminum, this thumb screw offers excellent durability while reducing overall weight, ideal for applications where corrosion resistance is critical.
• High Tensile Strength for Reliable Fastening: With a tensile strength of 40,000 psi and Rockwell B60 hardness, it ensures secure, long-lasting connections under moderate stress conditions.
• Precision Thread Fit for Consistent Performance: Class 2A UNC coarse threads with right-hand direction enable easy alignment and reliable engagement, minimizing cross-threading risks.
• Flared Collar Design for Improved Stability: The round-head profile with a flared collar distributes pressure evenly, reducing surface damage and enhancing holding power in assembled components.
• Full Threading for Maximum Adjustability: Fully threaded length allows for versatile positioning and secure fastening across various material thicknesses up to 3/8".
• Compliant with Environmental and Safety Standards: Meets RoHS 3 and REACH regulations, ensuring safe use in electronics, machinery, and other regulated industries without hazardous substances.

Professional Applications & Engineering Value

This 1/4"-20 knurled thumb screw is engineered to address common challenges in industrial assembly and maintenance, where quick access and tool-free adjustments are essential. Constructed from 6061 aluminum, it combines lightweight properties with resistance to oxidation, making it suitable for environments exposed to moisture or chemicals. The UNC coarse thread and Class 2A fit ensure rapid installation and reliable performance, reducing downtime in production lines. The flared collar design and knurled head enhance grip and distribute clamping force, preventing damage to sensitive surfaces in applications like electronic enclosures, machinery panels, and prototyping setups. By offering high tensile strength and full threading, it provides versatile, secure fastening for B2B procurement needs in sectors requiring repeated adjustments and compliance with RoHS and REACH standards.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional standards, including Class 2A thread fit for consistent tolerance and UNC coarse spacing with a right-hand direction. It meets manufacturing specifications for 6061 aluminum with a hardness of Rockwell B60 and tensile strength of 40,000 psi. Compliant with RoHS 3 (2015/863/EU) under exemption 6(b)-II for lead in aluminum alloys and REACH (EC 1907/2006) regarding SVHC substances, ensuring environmental and safety adherence for industrial use.