The stud 31 may be selectively located in one of {HEAD ~ a plurality} of {TAIL ~ stud locating positions} 39 distributed across or along a stud locating opening 38 or aperture 38 
of
The stud 31 may be selectively located in one of { HEAD ~ a plurality } of { TAIL ~ stud locating positions } 39 distributed across or along a stud locating opening 38 or aperture 38
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH