110 of the nuts 114 the component 105 to be mounted to the vehicle frame 104 is placed such that the keyhole features 106 having slots 117 and clearances 118 pass over the nuts 114 and rest upon the easily compressible deformable extrudable or crushable sacrificial shoulders 110 thereby temporarily supporting the component 105 conventional fasteners 107 are then installed through regular mounting holes 108 not visible in view and through frame mounting holes 116 and are fully tightened the nuts 114 having easily compressible deformable extrudable or crushable sacrificial shoulders 110 upon the bolts 109 are then fully tightened such that the easily compressible deformable extrudable or crushable sacrificial shoulders 110 either crush or extrude into the unoccupied slots 117 and clearances 118 of the keyhole features 106 allowing the bolts 109 to become a fully contributing member to the integrity of the mounting of the component 105 to the vehicle frame 104 fig9 shows a section of a vehicle frame 104 and a portion of the component 105 to be mounted to the vehicle frame 104 the keyhole feature 106 having slots 117 and a clearance 118 has been placed over the head 112 of the bolt 109 and the nut 114 not visible has been fully tightened the easily.