material will be in accordance with ships parts control center activity hx quality control,manufacturing and testing specifications reference number differentiating characteristics, zzzy criticality code justification, material cres astm a564; 1.875 in nom o/a dia; 1.500 in major i.d.; 0.340 in minor i.d.; drilled hole in face 0.248 in dia by 0.380 in deep for dowel pin general characteristics item description