Q 173B-1999
Hexagon bolts with split pin hole on shank-fine pitch thread
Q 173C-1999
Hexagon bolts with split pin hole on shank-fine pitch thread
Q 173B-2012
Hexagon bolts with split pin hole on shank-fine pitch thread
Q 173C-2012
Hexagon bolts with split pin hole on shank-fine pitch thread