SAE AS 3251B

SAE AS 3251B Bolt, Machine-Double Hex Extended Washer Head, Drilled, PD Shank, Silver Plated, CRES, UNS N07718, 185 KSI MIN, .2500-28 UNJF-3A ( Reaffirmed: Jun 2007 )

standard by SAE International, 06/01/2002