you can simply use a lug bolt in its place, with a big washer.  i use  a
lug bolt in mine, that way i have an extra lug bolt with me in case one gets
stripped out.

In a message dated 7/24/2017 9:43:55 A.M. Eastern Daylight Time,
tonycollin@GMAIL.COM writes:

Hello,

Who knows the correct size for the bolt that holds  the clam shell in place?
Mine extricated itself!

Thank  you,
T.