SAE AS 3148

SAE AS 3148 Bolt, Machine - Double Hexagon Extended Washer Head, Close Tolerance Shank, AMS 4967, .250-28 UNJF-3A ( Reaffirmed: Mar 1982 Nov 1991 May 1995 Nov 2001 May 2006 )

standard by SAE International, 11/01/1976