1/4"-28 Thumb Screw Bolt with Red Round Plastic Grip for Clamping (Fine Thread) Pack: 4 Thumb Screws Thread: 1/4-28 (Fine Thread) Lengths Available: 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2" Material: Stainless Steel 18-8 Applications: Securing material without using a wrench; ideal for use in Panels, Vices, Clamps, Router Tables, Camera Tripods, Power Tools, and Woodworking Jigs. Thumb screws offer hand-adjustment for simple action to fasten, tighten, loosen, or remove without the need for tools. Suitable for assemblies requiring repeated removal and reinstallation. Reduces the risk of over-tightening, making them ideal for household, electronic, and consumer products. Reduces maintenance or inspection time in removal-and-reinstallation applications like safety covers or access panels. Additional Information: Designed for ease of use and to avoid over-tightening. Made in the USA. For more sizes, threads, and colors, please visit our store Here.