Thumb Screws Fastenal Straight Knurling Pattern And What Is The Difference?

We can often see the thumb screws fastenal knurling screw is either straight pattern or entwining twil (pineapple pattern). Do you know the difference between them in manufacturing process?

First of all, what is the difference between the thumb screws fastenal straight knurled screw and the entwining twill knurled screws? The one on the left side of the picture is straight knurled screw , and the one on the right is straight knurled screw .

From the technical point of view, the method of rolling different patterns on the surface of metal workpiece with a knife is called knurling, which is mainly used for anti-skid. The thumb screws fastenal pattern of knurling includes two kinds: straight knurled and entwining twill knurled. And the pattern is divided into thick and thin parts, generally using modulus “ m “. The shape of knurling is shown in the diagram.

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