The direction that the retainer is moved into the temporarily secured position is generally at right angles to the direction {HEAD ~ the retainer} is moved from the temporarily secured position to {TAIL ~ the fully secured position} 
The direction that the retainer is moved into the temporarily secured position is generally at right angles to the direction { HEAD ~ the retainer } is moved from the temporarily secured position to { TAIL ~ the fully secured position }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL