NPTM X NPTM X NPTM Excel Metal part no. Equivalent Part no. Type 1 Equivalent part no Type 2 NPT MALE PIPE SIZE P Ø E L L1 HEX F 1N-PMT ----------------- 1-1-1MT 1/16 0.12 1.68 0.84 7/16 2N-PMT -2-MT 2-2-2MT 1/8 0.19 1.68 0.84 7/16 4N-PMT -4-MT 4-4-4MT 1/4 0.28 2.02 1.01 9/16 6N-PMT -6-MT 6-6-6MT 3/8 0.38 2.26 1.13 11/16 8N-PMT -8-MT 8-8-8MT 1/2 0.47 2.74 1.37 7/8 12N-PMT --------------- 12-12-12MT 3/4 0.62 2.96 1.48 1-1/16 16N-PMT --------------- 16-16-16MT 1 0.88 3.76 1.88 1-3/8 20N-PMT --------------- 20-20-20MT 1-1/4 1.09 4.44 2.22 1-5/8 24N-PMT --------------- 24-24-24MT 1-1/2 1.34 5.28 2.64 1-7/8