uxcell 4 Point Knobs, 1/2"-13 UNC 2.09" Threaded Stud Star Clamping Knobs Hand Tightening Thumb Screw Knob for Lawn Mower Umbrella Base Clamps Replacement Machinery

uxcell 4 Point Knobs, 1/2"-13 UNC 2.09" Threaded Stud Star Clamping Knobs Hand Tightening Thumb Screw Knob for Lawn Mower Umbrella Base Clamps Replacement Machinery

• What You Get: Package comes with 1 piece of 4 point knob. Thread Size: 1/2"-13 (UNC); Screw Length: 53mm/2.09inch; Total Width: 44mm/1.73inch; Total Length: 82mm/3.23inch. Due to slight errors in manual measurement, please refer to the actual product for the most accurate measurement
• Good Material: These thumb screw knobs are made of plastic and iron, making them sturdy and durable with excellent rust and corrosion resistance. It has a smooth surface, clear threads, and is designed for long-term use
• Feature: The clamping screw knob features a star-shaped design with smooth lines and a comfortable grip. The thickened nut head facilitates smooth rotation, ensuring safe and convenient installation. This knob is a great replacement for your damaged or old knobs
• Easy to Use: Our 4-point knob features a threaded design and a star-shaped handle for easy rotation, allowing for tool-free tightening by hand. Tightening, installation, and removal are simple and convenient, bringing convenience to your projects. However, do not over-tighten the knob, as this may damage or strip the threads on the mating parts
• Wide Application: These thumbscrew handles fasteners are widely used in applications requiring frequent adjustment or tightening, such as industrial equipment in the machinery industry, including lathes, drilling machines, sawing machines, machine tools, 3D printer platforms, and instrumentation. They can also be used for fastening everyday cabinets, toolboxes, furniture, etc