Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!
Microsoft MSN, Live, Hotmail, Outlook email users may not be receiving emails. We are working to resolve this issue. Please add support@steelsoldiers.com to your trusted contacts.
The shifter is slightly tapered. Outside diameter at the end of the portion where the threads stop is .570 in. Outside diameter 3 inches down is .685 inches.
Sorry to take so long to reply. My M-817 has 1/2-13 threads. We just attached the artificial hip ball that was replaced due to failure. Hard stainless. We machined an insert and installed it. Looks like it belongs.