308 Stainless Steel Threaded Nipple, Grade 309 SS Threaded Union, ASTM A182 F309H Stainless Steel Socket Weld Reducer Insert, DIN 1.4833/1.4828 Screwed Union, Stainless Steel 308 Threaded Pipe Cap, ASME SA182 F309 SS Forged Cap, UNS N08904/S30900/S30909 Threaded Bull Plug, 309H Stainless Steel Coupling.