Matching Pairs fasteners-Exercise EOnline version Matching the beginnings and the ends of the sentences. by Ella Glazov 1 The heads of screws are slotted 2 The tip of a rivet is pounded or mushroomed… 3 Cotter pins are also referred to 4 Safety wire is easily… 5 We can describe a screw… 6 Safety wire is made of 7 8 Bolts and nuts are shaped 9 A cotter pin is also used… as safetying devices. to engage screwdrivers. to safety bolts and pins. are split. copper or steel. twisted or bent. to form another head. by its slot.