SAE Inverted Flare (SAE J512)
Widely used in automotive systems, the inverted flare connection features a machined male connector with a 420 seat, and a flared male tubing with a 450 seat. The female side has a 420 seat that provides a sealing surface. The threads connect together to make a mechanically strong bond.
nch size | Dash size | Thread Size | Male Thread O.D. (in) | Female thread O.D (in) | ||
1⁄8 | -2 | 5⁄16 - 28 | 5⁄16 | 0.31 | 9⁄32 | 0.27 |
3⁄16 | -3 | 3⁄8 - 24 | 3⁄8 | 0.38 | 11⁄32 | 0.34 |
1⁄4 | -4 | 7⁄16 - 24 | 7⁄16 | 0.44 | 13⁄32 | 0.39 |
5⁄16 | -5 | 1⁄2 - 20 | 1⁄2 | 0.50 | 15⁄32 | 0.45 |
3⁄8 | -6 | 5⁄8 - 18 | 5⁄8 | 0.63 | 9⁄16 | 0.57 |
7⁄16 | -7 | 11⁄16 - 18 | 11⁄16 | 0.69 | 5⁄8 | 0.63 |
1⁄2 | -8 | 3⁄4 - 18 | 3⁄4 | 0.75 | 23⁄32 | 0.70 |
5⁄8 | -10 | 7⁄8 - 18 | 7⁄8 | 0.88 | 13⁄16 | 0.81 |
3⁄4 | -12 | 1 1⁄16 - 16 | 1 1⁄16 | 1.06 | 1 | 1.00 |
