S-90181A626 3/8"-16 x 1 1/4" Thumb Screws

Key Features & Benefits at a Glance

• Easy hand-tightening operation with spade head design requiring no tools for quick adjustments
• Superior torque resistance from Rockwell B55 hardness steel construction
• Reliable load-bearing capacity with 40,000 psi tensile strength for heavy-duty applications
• Secure fastening performance through Class 2A thread fit ensuring consistent engagement
• Quick installation in various materials using coarse UNC threads that resist cross-threading
• Maximum grip length with full threading along the 1 1/4" shaft
• Environmentally compliant with RoHS 3 standards for global industrial use

Professional Applications & Engineering Value

This 3/8"-16 UNC steel thumb screw delivers exceptional value in industrial settings where frequent adjustments and reliable clamping are critical. The spade head design enables operators to apply substantial torque by hand, eliminating tool dependency in maintenance-heavy environments. Manufactured from hardened steel with Rockwell B55 hardness, it maintains dimensional stability under repeated use while the coarse thread configuration provides rapid installation in machinery, fixtures, and equipment panels. The fully threaded shank ensures consistent clamping force distribution, making it ideal for applications requiring secure but adjustable fastening in manufacturing, automation systems, and industrial enclosures where vibration resistance and quick access are paramount.

Specification Summary & Compliance

This thumb screw features precision 3/8"-16 UNC coarse threads with Class 2A fit for consistent engagement and reliable performance. The product maintains dimensional accuracy per UNC thread standards and is manufactured from steel with Rockwell B55 hardness and 40,000 psi tensile strength. Compliance includes RoHS 3 (2015/863/EU) environmental regulations, ensuring suitability for various industrial applications requiring restricted substance compliance.