Mil-s-46172 mil spec single material response or astm a148 assn std single material response
Astm a148 assn std single material response or mil-s-46172 mil spec single material response
Mil-s-46172 comp 4140,5140 or 6150 gr d mil spec single material response or astm a148 gr 105-85 or 120-95 assn std single material response