B5406 Brass Male NPT x Female NPT Bushing Check Part Number A1 NPT A2 NPT L C TAP DRILL WORKING PRESSURE B5406-4-2 1/4-18 1/8-27 0.64 0.56 0.33 1200 psi B5406-6-2 3/8-18 1/8-27 0.74 0.69 0.33 1200 psi B5406-6-4 3/8-18 1/4-18 0.68 0.69 0.43 1200 psi B5406-8-2 1/2-14 1/2-14 .80 .81 0.33 1200 psi B5406-8-4 1/2-14 1/4-18 .80 .87 0.43 1200 psi B5406-8-6 1/2-14 3/8-18 .81 .81 0.57 1200 psi B5406-12-4 3/4-14 1/4-18 .93 1.00 0.43 1200 psi B5406-12-6 3/4-14 3/8-18 .93 1.00 0.57 1200 psi B5406-12-8 3/4-14 1/2-14 .93 1.00 0.70 1200 psi B5406-16-8 1-11 1/2 1/2-14 1.16 1.38 0.70 1200 psi B5406-16-12 1-11 1/2 3/4-14 1.10 1.38 0.91 1200 psi
