High Knurled Screws DIN 464 Buy M4 X 16mm Knurled Thin Thumb Screws (DIN 653) - Stainless Steel (303) - Accu M5 DIN 464 Screws Buy M5 x 16mm Knurled High Thumb Screws (DIN 464) - Black Box contents: 2 knurled screws , Stainless steel 1., 4305 Knurled screws steel and stainless steel DIN 464 high The thread of the screws generally extends to the waistband and ends with a spout without a free stitch. Machine Turned Black Stainless Steel Knurled High Thumb Screws. They have a large cylindrical head with a knurled edge, they're easily adjusted by hand High knurled screws DIN 464 are made entirely from one piece by turning.