Similar to DIN 84, but with a bigger head diameter and a slightly distinctive head profile. Produced to ISO 1580 or DIN eighty five. Make sure you Observe that on account of producing restrictions, all nylon variants of this stuff are only "just like" and not "in absolute accordance with" https://collinubzrf.designi1.com/52376496/the-smart-trick-of-masonry-screws-that-no-one-is-discussing