with reference to fig6 8 the tubular body portion 28 includes a plurality of bosses 52 extending from the front surface 34 a plurality of side bores 54 extend through the tubular body 28 a filet 56 is provided around the circumference of tubular body 28 at the juncture of the tubular body 28 with the flange 46 as shown in fig8 the front 34 rear 36 and side surfaces 38 of the tubular body 28 are flat referring to fig9 and 10 longitudinal central bore 40 extends through the tubular body 28 and includes central axis 58 a plurality of threaded bores 60 are provided extending into the tubular body 28 from the front surface 34 and intersecting the central bore 40 of the body at right angles u03b8 1 the threaded bores 60 extend through the tubular body 28 and through the bosses 52 providing the bosses 52 at the location of each threaded bore 60 thereby thickens the tubular body 28 at the location of the threaded bores 60 and provides additional body length for a longer thread length as shown in fig9 the tubular body 28 includes a top bore 62 within the threaded nose portion 48 the top bore 62 includes an axial center 64 the top bore 62 of the threaded nose portion 48 is eccentric with respect to the central bore 40 of the tubular body 28 the central bore 40.