diameter of middle body portion 100 of nut 74 horizontal body portion 290 also has two extensions 294 thereon extensions 294 have openings 296 therein openings 296 are dimensioned to permit the telescopic insertion of choke and kill lines 38 40 in the openings 286 but not permit nuts 280 therethrough the smallest inner diameters of beveled sections 288 298 are dimensioned to permit relative travel of nut 74 with respect to platforms 274 276 for insertion of ends 258 260 into openings 266 268 respectively of collars 262 264 respectively after nut lugs 92 have passed through slots 148 pipe guide 278 comprises horizontal body portion 300 having center opening 303 therethrough substantially coaxial with female member 64 opening 303 is dimensioned to permit telescopic insertion of pipe mating section 152 of female member 64 horizontal body portion 300 is connected to pipe mating section 152 of female member 64 by welding or other suitable means pipe guide 278 also has two extensions 304 thereon extensions 304 have outwardly facing arcuate sections 306 including retainer fingers 308 with a radius of curvature sufficient to permit close fitting of choke and kill lines 38 40 therein pipe nuts 280 have cylindrical shapes with bores 309 therethrough bores 309 are dimensioned to permit the telescopic insertion of choke and kill lines 38 40 therethrough pipe nuts 280 are of a thickness permitting support of the weight of the choke and kill line sections 38 40 thereon the weight of the choke and kill.