- Size Specifications: Standard Metric Thread Size: M8 (1.25mm Pitch), Thread Length: 20mm, T Wing Head Dimensions: 36mm x 16mm x 14mm (1.42" x 0.63" x 0.55"), Total Length: 35mm (1.38"), Color: Black. - Durable Material: Constructed from galvanized carbon steel for the grub screws, these thumb screw T-wing knobs offer exceptional durability and wear resistance. The thermoplastic T-head knobs ensure a smooth surface and comfortable grip, with neat, clear threads that provide uniform force and prevent slipping. - User-Friendly Features: The T-wing knobs are designed for easy manual grip and turning, enhancing leverage and comfort for tightening or loosening. Fixed metal inserts are securely machine injected, ensuring reliable connections between parts. This combination of screw-type structure and T-wing handle design simplifies operation and boosts efficiency. - Practical Applications: Ideal for tasks requiring frequent adjustments, these metric hand clamp knobs are widely used in various machinery such as lathes, drilling presses, and milling jigs. They also excel in packaging and woodworking applications, as well as in printing equipment, providing strong and reliable control for adjustments and tightness. - Why Choose This Product: Experience effortless adjustments with robust thumb screws that enhance your operational efficiency. The combination of high-quality materials and thoughtful design makes these knobs a reliable choice for both professional and DIY tasks.