UNI 8181 Cross recessed countersunk (flat) head

Equivalent Standards

UNI 8181

Dimensions for UNI 8181 Cross recessed countersunk (flat) head

d b k d1
3 >= 0.6 x l 1.65 5.6
3.5 >= 0.6 x l 1.93 6.5
4 >= 0.6 x l 2.2 7.5
4.5 >= 0.6 x l 2.35 8.3
5 >= 0.6 x l 2.5 9.2
6 >= 0.6 x l 3 11