Nominal of Thread 1>2>3>4
Número da peça:
Thread Nominal M1
Thread Nominal M2
Nominal of Thread 3(Different Diameters or Different Type Screw)
A small to medium diameter steel pipe fitting that uses screw connection; JIS B 2301 specifies it as "screw-in type malleable cast iron pipe fitting". Hot dip galvanizing reduces impact on the environment.