in abutment with the support block 8 wing like projections 106 will be in abutment with groove faces 81 thereby locking the locking mechanism in place in the clevis 6 fig9 and 11 show a detailed layout of the locking mechanism body 14 in the embodiment shown the body 14 consists of a rectangular like prism shape having opposite major faces one being the top 110 and the other the bottom 112 longitudinal faces 114 and end faces 116 a perforation 102 communicates between the top 110 and bottom 112 faces this perforation 102 has a circular cross section and has threads 120 located on the longitudinal faces 114 are means for slidable engagement shown herein as wing like projections 106 additionally located on one of the end faces 116 joining the end face to the bottom face 112 and to longitudinal faces 114 is a chamfer 118 referring back to fig2 the other portion of the support block locking mechanism the means for releasable locking and abutment with a support block and releasable locking with a clevis is shown this portion is the bolt 12 the bolt is comprised of a threaded portion 130 a means for rotating the bolt 132 located at one end and a support block abutment surface 134 at the other end of the bolt additionally means for preventing rotation of the bolt due to vibration may also be mounted on the bolt this means for preventing rotation may consist of a lock washer a jam nut or a plastic plug fig1 and 13 show an alternate embodiment of the support block and.