The Apollo Rear Chuck Screw and Washer set of six are suitable for the rear Chuck of the Ridgid 300 pipe threading machine.
Part Number for these items 46790APH/40270APH
If you are replacing these screws but the rear chuck still seems wobbly or loose you may also need the item below.
Oversized Step Pins, please click link.
https://pipethreading.co.uk/product/apollo-rear-chuck-oversized-step-pins-45260aph/
