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NPT
ER/L-NPT PDY PDX PDX RE IC228
External NPT INSL RE IC IC50M
(National Pipe Threads) IC PDY IC250
Full Profile Laydown INSL IC808
Threading Inserts for Steam, IC908
Gas and Water Pipes IC1007
THREADING
NUT Dimensions External right-hand shown
30° 30° Tough 1 Hard
90° 1°47' SCREW
Designation IC TPI(3) RE INSL PDY PDX CICT(4) ••
16ER 27 NPT 9.52 27.0 0.04 16.49 0.7 0.8 1 •
1• • •
16ER 18 NPT 9.52 18.0 0.06 16.49 0.8 1.0 • •
•
16ERB 18 NPT (1) 9.52 18.0 0.06 16.49 0.9 1.1 1 •• •
•
16ERM 18 NPT (1) 9.52 18.0 0.05 16.49 0.8 1.0 1 • •
16EL 14 NPT 9.52 14.0 0.07 16.49 0.9 1.2 1 •
1• • •
16ER 14 NPT 9.52 14.0 0.07 16.49 0.9 1.2 •
16ERB 14 NPT (1) 9.52 14.0 0.07 16.49 0.9 1.2 1 ••••
16ERM 14 NPT (1) 9.52 14.0 0.05 16.49 0.9 1.2 1 •
16EL 11.5 NPT 9.52 11.5 0.09 16.49 1.1 1.5 1 •• •
16ER 11.5 NPT 9.52 11.5 0.09 16.49 1.1 1.5 1 •
16ERB 11.5 NPT (1) 9.52 11.5 0.09 16.49 1.1 1.5 1 •••
16ERM 11.5 NPT (1) 9.52 11.5 0.09 16.49 1.1 1.5 1 •• •
16ER 8 NPT 9.52 8.0 0.11 16.49 1.4 1.6 1 •
16ERB 8 NPT (1) 9.52 8.0 0.11 16.49 1.4 1.7 1 •••
16ERM 8 NPT (1) 9.52 8.0 0.12 16.49 1.3 1.8 1 •
22ER 11.5 NPT 2M (2) 12.70 11.5 0.09 22.00 2.3 3.5 2 •
27ER 11.5 NPT 3M (2) 15.88 11.5 0.09 27.50 3.3 5.5 3 •
27ER 8 NPT 2M (2) 15.88 8.0 0.09 27.50 3.3 5.0 2
• For Insert Identification System, see pages 638-639 • For threading between walls use GRIP-type insert TIP-NPT. • National Pipe Threads ANSI/ASME B1.20.1-1983
• For technical information and detailed cutting data, see pages 711-727
(1) With pressed chipformer
(2) Multi-tooth
(3) Threads per inch
(4) Number of teeth per corner
For tools, see pages: C#-SER/L (701) • SER-D (702) • SER/L (700)
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