Knurled thumb screws feature a wide, rounded head which is smooth and flat on top, with a diamond shaped pattern of indentions cut around its circumference. The roughened circumference of the head allows for easy hand loosening and tightening. Knurled thumb screws are perfect for applications where frequent adjustments are required.

Standard knurled thumb screws are available in diameters of 4-40, 6-32, 8-32 and 10-32, and in lengths from 5/16" to 5/8". They come in 303 stainless steel and aluminum.

Washer faced knurled thumb screws feature an extra shoulder section that allows the head to seat flush with the surface it's applied to. This style is also available in the same size and material options as the standard style.

Check out our full selection of knurled thumb screws here.