S-91882A455 3/8"-16 x 1" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced manual operation with a large 1 3/8" knurled head for superior grip and torque application without tools.
- Exceptional durability and corrosion resistance provided by the black-oxide steel finish, extending service life in demanding environments.
- High mechanical strength with 70,000 psi tensile strength and Rockwell B84 hardness for reliable performance under load.
- Quick and secure fastening due to the 3/8"-16 UNC coarse threads and Class 2A fit, ensuring easy engagement and vibration resistance.
- Versatile full-thread design for consistent holding power along the entire 1" length, ideal for adjustable components.
- Stable alignment from the integrated collar (3/4" diameter, 11/16" height), preventing over-tightening and improving load distribution.
- Compliance with global standards, including RoHS 3 and REACH, for safe use in regulated industrial and electronic applications.
Professional Applications & Engineering Value
These black-oxide steel thumb screws are engineered to address common industrial challenges, such as the need for rapid assembly and disassembly in machinery, fixtures, and access panels. The knurled head and raised profile deliver excellent manual grip, reducing operator fatigue and eliminating the risk of tool slippage in tight spaces. With 3/8"-16 UNC coarse threads and a Class 2A thread fit, they provide reliable engagement in metals and plastics, minimizing cross-threading and ensuring consistent clamping force. The fully threaded design and high tensile strength make them ideal for applications requiring frequent adjustments, such as in manufacturing equipment, automotive assemblies, and electronic enclosures, where durability and regulatory compliance are critical.
Specification Summary & Compliance
This product features precise UNC coarse threads with a Class 2A thread fit for standard dimensional accuracy and easy installation. It complies with RoHS 3 (2015/863/EU) under exemption 6(a)-I for lead in steel and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial and commercial use.
