This standard specifies the dimensions, tolerances, inspection methods and use of tapered cylindrical thread gauges for drilling pump crossheads, intermediate rods, piston rods and locking nuts. This standard is applicable to the inspection of tapered cylindrical threads, cylindrical threads and tapered threads specified in SY/T 5020-1997 "Tapered cylindrical threads for drilling pumps".
SY/T 5022-1998 history
1998SY/T 5022-1998 Tapered thread and plain gages and straight thread gages for the slush pump