... "-6" Thread:NPT ,BSPP Basic design:DIN2828,MIL-C-27487 Type:A,B,C,D,E,F,DC,DP... Cam & Groove Couplings1 ... are made to standard of A-A-59326( superseding MIL-C-27487 )or DIN2828 2.casting methord:investment casting 3.size ... .productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Our factory offer investment casting high quality Stainless Steel 316 Cam & Groove Couplings