ASTM A516 Black Spade Flange: ANSI B16.48, API 590, FF Carbon Steel Spade Flange, F60, F65, F70, PN16-PN250, 1/8-40 Inch, DN6-DN1000, Anti-Rust. Name: Flat Anti-Rust Spade Flange. Type: Spade Flange. Materials: ASTM A516, Carbon Steel. Grades: F60, F65, F70. Face: FF. Standards: ANSI B16.48, API 590. Pressure: PN16-PN250. Size: 1/8-40 Inch (DN6-DN1000). Surface Finish: Black, Anti-Rust.