M8 x 40mm Thread Star Knob 4Pcs, Plastic Hex Shaped Clamping Knob Handle Hand Tightening Screw for Umbrella Base Replacement

Thread size: M8 x 40mm / 0.31'' x 1.57''(D x L), M8 Head Dia (Approx): 38mm / 1-1/2'', please check the thread you need before buying Size, male knob is ideal for DIY projects and home repairs Quick & Easy Installation No hardware required, this male threaded knobs adopts special star design, comfortable in hand, ergonomic, easy to turn with just your fingers, will not scratch your hand.Come together to diy and install these star knobs into your threaded holes High-Quality Material The screw is smooth and burr-free overall, comfortable to hold, the thread is deep and complete and clear, the force is even and not slippery, the stud is made of carbon steel, the surface of the screw is galvanized process, uniform plating, high hardness, durable Wide Scope of Application M8 threaded knob Suitable for speaker stands, automotive, woodworking fixtures, industrial instruments and other machinery and equipment, workbenches or benches, is the best choice for clamping operations, industrial equipment, is your daily life to replace the tightening screw