SS Hydraulic Fittings Stainless Steel Hydraulic fittings Size : 1/4” OD to 2” OD Type : Screwed (SCRD) – BSP, BSPT Form : Hex Nipple, Elbow, Cap, Adapter, Tee etc. Blukhead Union, Reducing Union, Union, Union Elbow, Grade : Stainless Steel 304/304H/304L, 316/316H/316L/316Ti, 309, 310, 317L, 321, 347, 904L .