S-90200A320 3/8"-16 x 3/4" 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 grip and torque application with a knurled round head and 0.875" diameter for slip-resistant operation without tools.
- Superior corrosion resistance and durability thanks to the black-oxide steel finish, extending service life in demanding environments.
- Reliable and fast installation with a fully threaded 3/4" length and coarse UNC thread, ensuring secure engagement in various materials.
- High mechanical strength under load with 70,000 psi tensile strength and Rockwell B84 hardness for heavy-duty applications.
- Precise and consistent thread fit with Class 2A tolerance, reducing cross-threading and improving assembly efficiency.
- Compliance with international environmental standards including RoHS 3 and REACH, making it suitable for regulated industries.
- Versatile high-profile round head design for easy hand-tightening in tight spaces or frequent adjustment scenarios.
Professional Applications & Engineering Value
This black-oxide steel thumb screw is engineered to address common industrial challenges such as tool-free maintenance and repetitive manual fastening. The knurled head texture and high-profile round shape provide exceptional grip, reducing hand fatigue and improving operational speed in assembly lines, machinery covers, and electronic enclosures. Made from robust steel with a 3/8"-16 UNC coarse thread, it ensures quick, secure fastening in metals and plastics, while the fully threaded design offers consistent holding power. Ideal for applications requiring frequent adjustments, this screw combines high tensile strength and corrosion resistance to withstand harsh conditions, making it a reliable choice for industrial equipment, automotive components, and OEM machinery.
Specification Summary & Compliance
This thumb screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy and compatibility. It meets RoHS 3 (2015/863/EU) with exemption 6(a)-I and is REACH (EC 1907/2006) compliant, ensuring environmental safety. The specifications include a right-hand thread direction, coarse thread spacing, and full threading along the 3/4" length, supporting reliable performance in various industrial settings.
