Brass, 2.625 in. Lg, 0.750 across hex flats, 0.500-20 nf-2a threads at first end, 0.688 diameter at second end, center hole 0.500 in. Diameter 0.062 in. Deep, 0.500-20 nf-2b threads 0.625 in. Deep, 0.266 in. Diameter 0.031 in. Deep, 0.250 in. Diameter 1.907 in. Deep