|Body: Sintered steel (Distaloy AB), black steam oxidized
DIN 912 socket cap screw: European 8.8 grade steel, blackened
GN 706.3 threaded set collars can be used in connection with bolt thread tolerance 6g. After clamping, the thread of the semi-split set collar may no longer be tolerance-stable (6H).
For sizes d1 = 20 to 32, d3 is a through hole; for sizes d1 = 42 and up, d3 is a threaded blind bore.
stainless steel threaded set collars, see GN 706.3.