S-96966A626 1/4"-20 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Easy hand-tightening operation with a wide spade head design for maximum grip and quick adjustments without tools
• Superior corrosion resistance due to zinc-plated steel construction, extending service life in industrial environments
• High tensile strength of 40,000 psi ensures reliable load-bearing capacity and secure fastening under stress
• Rockwell B55 hardness provides excellent durability and resistance to wear and deformation
• Coarse UNC threads with Class 2A fit offer smooth engagement and reduced cross-threading risk in repetitive use
• Fully threaded 1" length allows for consistent holding power across the entire fastener
• RoHS 3 compliance guarantees environmental safety and meets strict regulatory standards for hazardous substances

Professional Applications & Engineering Value

This zinc-plated steel thumb screw is engineered to address common challenges in industrial settings where tool-free, rapid adjustments are essential. The spade head design maximizes surface contact for effortless hand-tightening, reducing assembly time and minimizing the risk of stripped threads. With a coarse UNC thread pattern and Class 2A fit, it ensures quick, reliable engagement in materials like metal panels, machinery guards, and electronic enclosures, even in high-vibration environments. The 40,000 psi tensile strength and Rockwell B55 hardness provide robust performance, preventing failure under dynamic loads. Ideal for maintenance access points, prototyping, and equipment requiring frequent disassembly, this screw delivers consistent fastening reliability while complying with RoHS 3 standards for safe use across global markets.

Specification Summary & Compliance

This thumb screw adheres to UNC coarse thread standards with a Class 2A thread fit for precise dimensional accuracy and smooth installation. It is manufactured from zinc-plated steel with a 1/4"-20 thread size, 1" length, and fully threaded design. Compliance includes RoHS 3 (2015/863/EU), ensuring it is free from restricted hazardous substances, and meets general industry specifications for mechanical fasteners in terms of hardness and tensile performance.