S-91746A800 3/8"-16 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Superior manual grip and torque application with a 0.875" diameter knurled head, eliminating the need for tools in frequent adjustments.
• Excellent corrosion resistance and durability provided by 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• High mechanical strength and load-bearing capability with 80,000 psi tensile strength and Rockwell B83 hardness for reliable performance.
• Easy and quick installation due to the coarse 3/8"-16 UNC thread and Class 2A fit, ensuring smooth engagement and reduced cross-threading risk.
• Optimized low-profile round head design for applications with limited clearance while maintaining a secure hand-turning surface.
• Secure and stable partial threading over 15/16" length, providing strong holding power where full threading is not required.
• Compliance with major environmental and safety regulations including RoHS 3 and REACH, ensuring suitability for global industrial supply chains.

Professional Applications & Engineering Value

This 3/8"-16 UNC thumb screw is engineered to solve critical challenges in industrial maintenance, machinery access panels, and electronic enclosures where tool-less, rapid fastening is essential. The 18-8 Stainless Steel material offers inherent resistance to rust and chemical exposure, extending service life in demanding conditions such as manufacturing plants, outdoor equipment, and marine applications. The knurled low round head provides an ergonomic, non-slip surface that enables operators to apply sufficient torque by hand, even with gloves on, reducing assembly time and minimizing the risk of stripped drives. Combined with a coarse thread and Class 2A thread fit, it ensures quick alignment and secure fastening in vibration-prone settings, making it a reliable choice for repeated access and adjustment without compromising structural integrity.

Specification Summary & Compliance

This thumb screw features a 3/8"-16 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy and easy assembly. It is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B83 and tensile strength of 80,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and health safety standards for industrial use.