Specification :

Material: stainless steel or steel with black finished or chrome-plated.
Design parameter
d1 d2 d3 h k I
M3 12 6 7.5 2.5 6, 10, 12, 20
M4 16 8 9.5 3.5 5, 8, 10, 12, 16, 20, 25
M5 20 10 11.5 4 6, 8, 10, 12, 16, 20, 25, 30
M6 24 1215 5 8, 10, 12, 16, 20, 25, 30, 35
M8 30 16 18 6 12, 16, 20, 25, 30, 35, 40
M1036 20 23 8 15, 20, 25, 30, 35, 40