R Tube(Metric)-Thread(R)			G Tube(Metric)-Thread(G)		Tube(inch)-Thread(NPT)
Mod	T(BSPT)		Mod	T(BSPP)	Mod	T(NPT)
B401 1/8	R1/8		B401 1/8	G1/8	B401 N01	N01
B401 1/4	R1/4		B401 1/4	G1/4	B401 N02	N02
B401 3/8	R3/8		B401 3/8	G3/8	B401 N03	N03
B401 1/2	R1/2		B401 1/2	G1/2	B401 N04	N04
B401 3/4	R3/4		B401 3/4	G3/4	B401 U10	U10