S-91746A816 3/8"-16 x 3" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced manual grip and torque application with knurled round head design, eliminating the need for tools in frequent adjustments
- Superior corrosion resistance and durability from 18-8 stainless steel construction, ideal for harsh or washdown environments
- High mechanical strength under load with 80,000 psi tensile strength and Rockwell B83 hardness for reliable performance
- Quick and easy coarse thread engagement using UNC 3/8"-16 threading, reducing installation time in industrial assemblies
- Precise thread fit and consistent performance with Class 2A thread tolerance, ensuring secure fastening and vibration resistance
- Low-profile head design maximizes clearance in tight spaces while maintaining ample thumb contact surface
- Compliance with global environmental standards including RoHS 3 and REACH, supporting sustainable procurement policies
Professional Applications & Engineering Value
This low-profile knurled thumb screw delivers exceptional value in applications requiring frequent manual adjustments without compromising structural integrity. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for food processing equipment, marine components, and outdoor machinery where moisture exposure is common. The coarse UNC threading and partial threading design enable rapid installation and secure holding power in wood, plastic, and metal assemblies. With its 0.875" knurled head diameter and optimized 3" length, engineers can specify this component for access panels, clamping systems, and adjustable fixtures where tool-less operation and reliable performance are critical.
Specification Summary & Compliance
This thumb screw features 3/8"-16 UNC coarse threads with Class 2A thread fit for consistent engagement and right-hand thread direction. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility. The partially threaded design with 2 15/16" thread length and low-profile round head maintains dimensional accuracy per industrial standards.
