[国外标准] DIN 797-2007 Foundation bolt
[国外标准] SAE J370-1998 Bolt and Capscrew Sizes for Use in Construction and Industrial Machinery
[国外标准] SAE AS9715A-2007 Bolt, Machine-Double Hexagon, Extended Washer Head, Drilled, Silver Plated, Corrosi
[国外标准] SAE AS 9890A-2007 (R)bolt, machine - double hexagon extended washer head, cres uns s41800,.5000-20 u