That probably accounts for a lot of the issues. I don't myself understand why these screws seem to frustrate so many.

 

Yeah I agree, have never had a problem with the torx head.

 

the size of the bolt?

 

See above

 

Actually he was close
It's really
SCREW 1/4-20 X 5/8 TORX HD. (GRADE 8) Part Number: 1062

 

I replaced my torx with some Allen bolts like those. I like them a lot better.

 

This^^^^^ Got mine at Ace Hdw…..

 

Many of the bolt sizes are listed in the parts manuals.

The Parts manuals are available free from Harley at the SIP (Service Information Portal):
https://serviceinfo.harley-davidson....cle/lookupForm

Use the search at the top / right and search for year and Model- ie 2013 Road Glide

Click on Parts Catalogs if it isn't listed in the results (normally it will be in the top five or so results)

The first page has these links (in the recent parts manuals)
(These Links go to a 2013 Sportster Parts catalog)
Alphabetical List
Parts
Hardware List
New Parts List
Numerical Index
Component Types and Introduction Dates
Common Service Parts


Use the Parts link or alphabetical list to find your part number.

The Hardware List will show the parts like this: (use the search function to search for the part number and use find next until you see it in the Hardware List)

PART NO. DESCRIPTION
1028 SCREW 5/16-18 X 2-1/2 SEMS socket head, with lockpatch
1039 SCREW 5/16-18 X 2-1/2 hex flange head (Grade 8)
1048 SCREW 5/16-18 X 1-1/2 hex flange head
1081A SCREW 10-24 X 0.895 SEMS pan head
1091 SCREW 10-24 X 9.5 SEMS socket head

 

Caution: Stainless and Aluminum do not get along, the stainless will freeze in place, a real bitch to get out.

 

i have stainless in my 85 for over 30 years. they never froze "in place".