Dynabrade 97567 1/4" Safety Coupler, Male 
3M 26116, PPS Series 2.0 Adapter, Type S25, 1/4 Female, 19 Thread BSP, 7100135957 
Insize 4634-1N8, NPT THREAD RING GAGE, 3-1/2x8NPT, 6928640347061
$2,276.94
American tapered pipe thread for threads with sealant
Standard ANSI/ASME B1.20.1
Taper 1:16
Material: OHNS (Oil Hardened Non-Shrining Steel)
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