Custom Threads & Special Gaging – Hemco makes a wide variety of custom thread gages. These can be customer specific or per a thread standard. We have a very knowledgeable sales & specifications staff that can help you with your needs. Here are some of the threads we manufacture:
BPV Valve gages (90° included angle)
PG gages per Din 40430/40431 (80° included angle)
15° & 10° Thread gages
Trapezoidal threads
Tapered hole location gages
Preplate
Preplate
Depth notches
Special pd’s
Whitworth/ British threads
Odd angles
Multi Start threads
STI
Screw Thread Insert Plug Gages, Go and NoGo, are specified whenever a wire insert is used to repair a damaged thread or provide for a stronger thread to mating thread application. These gages are designed to check the oversize thread condition needed to allow the wire insert to maintain a standard pitch diameter after insertion. We manufacture all STI gages to X-Tolerance.
Thread Measuring Wires
Calibrated Thread Wires for 60˚ Threads
Packaged as a set with a slip identifying their measuring constant.
The most accurate and universally recognized method of obtaining pitch diameter measurements of thread plug or setting plug gages is by means of using 3 hardened steel measuring wires laid into opposite sides of the thread, as shown in the diagram. Precise measurements with proper pressures over these wires minus the appropriate constant equals the measured pitch diameter.
