H3210710-202000 is an ALFAGOMMA stainless steel BSPT male hose insert, factory item code 1251178. The H3210710 family has a 1 1/4" BSPT male connection. This catalogue position is intended for a hose with an inside diameter of 32.0 mm (1 1/4"; hose size and connection thread are separate selection dimensions.
The ordering row specifies dimension C as 44.0 mm and hexagon CH as 46.0 mm. Match the insert to the manufacturer's compatible hose, ferrule and assembly specification.
Illustration: representative H3210710 family technical drawing; size may vary.
