3M 26054, PPS Series 2.0 Adapter, Type S18, 3/8 Female, 18 Thread NPS,
4 per case 
Insize 4634-112, NPT THREAD RING GAGE, 1×11.5NPT, 6928640347009
$1,030.34
American tapered pipe thread for threads with sealant
Standard ANSI/ASME B1.20.1
Taper 1:16
Material: OHNS (Oil Hardened Non-Shrining Steel)
Stable dimension and wear resistance
Hardness HRC60-62
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