CALIFORNIA WARNING: This product can expose you to chemicals, including lead and DEHP, which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, go to https://www.p65warnings.ca.gov.
Set screw 1/4-28 thread x 1/4" long socket head knurled point cup
Use 1/8" hex wrench to install. Found on many shaft collar assemblies
Reference:
4323-01158-04
Bally M-1369
Bally SSI-428-4-1107