S-99607A234 1/4"-20 x 7/16" Thumb Screws
Thumb Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Enhanced grip and tool-free operation with knurled head texture and flared collar design for secure hand-tightening in industrial environments
- Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh or humid conditions
- High mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable, heavy-duty applications
- Precise thread engagement with Class 2A UNC coarse threads ensuring consistent fit and vibration resistance
- Full threading for maximum adjustability along the entire 7/16" length, providing versatile fastening options
- Compliance with environmental regulations including RoHS 3 and REACH, supporting sustainable manufacturing practices
- Durable round head profile with 37/64" diameter offering comfortable handling and repeated use without degradation
Professional Applications & Engineering Value
This 1/4"-20 UNC thumb screw is engineered to address common challenges in machinery, electronics, and assembly lines where tool-free access and frequent adjustments are necessary. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, extending service life in demanding environments. Its knurled head and flared collar design deliver superior torque application by hand, reducing installation time and eliminating the risk of tool slippage. With a coarse thread and Class 2A fit, it ensures quick alignment and secure fastening in panels, enclosures, and equipment requiring reliable, repeatable closures. Ideal for maintenance-heavy sectors, this fastener supports efficiency while upholding durability standards.
Specification Summary & Compliance
The thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It is fully threaded and manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial components.
