Notices
Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

Bolt size

 
  #1  
Old 08-07-2011, 11:59 AM
river rat
river rat is offline
One Of The Regulars
Thread Starter
Join Date: Sep 2007
Posts: 157
Likes: 0
Received 0 Likes on 0 Posts
Default Bolt size

Does anyone know the bolt length of the derby cover bolts and primary inspection cover bolts?
 
  #2  
Old 08-07-2011, 12:37 PM
vickers1's Avatar
vickers1
vickers1 is offline
Road Warrior
Join Date: Jun 2006
Location: Southeast GA
Posts: 1,950
Likes: 0
Received 2 Likes on 2 Posts
Default

I'm pretty sure they're 1/4".
 
  #3  
Old 08-07-2011, 01:00 PM
mkguitar
mkguitar is offline
Extreme HDF Member
Join Date: Sep 2010
Location: Phoenix '53, '88, '09 Big Twins
Posts: 14,745
Received 333 Likes on 282 Posts
Default

3 different sizes. ( and it's possible they've changed from year to year)

the primary cover has short and long bolts, the derby has even shorter.

I'm guessing you are changing hardware? just pull one of each and measure- good time to change the derby to allens from torx

mike
 
  #4  
Old 08-07-2011, 04:25 PM
vickers1's Avatar
vickers1
vickers1 is offline
Road Warrior
Join Date: Jun 2006
Location: Southeast GA
Posts: 1,950
Likes: 0
Received 2 Likes on 2 Posts
Default

My bad. I thought your question said size. Now I see it says length. Did you edit that are am I losing it?
 
  #5  
Old 08-07-2011, 04:51 PM
tall jerry
tall jerry is offline
New Member
Join Date: Dec 2010
Location: se michigan
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
Default

just put new socket head cap screws on today mine is a 05 egc bolt size is 1/4-20x5/8 for both covers.
 
  #6  
Old 08-07-2011, 05:09 PM
TWIN CAM 96's Avatar
TWIN CAM 96
TWIN CAM 96 is offline
Outstanding HDF Member
Join Date: Apr 2011
Location: East of the USS Midway
Posts: 2,555
Likes: 0
Received 1 Like on 1 Post
Default

There 1/4" x 20 x 1/2" Grade 8
 
  #7  
Old 08-07-2011, 05:31 PM
JustDave71's Avatar
JustDave71
JustDave71 is offline
Outstanding HDF Member
Join Date: Jul 2008
Location: SoCal
Posts: 2,113
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by tall jerry View Post
just put new socket head cap screws on today mine is a 05 egc bolt size is 1/4-20x5/8 for both covers.
ditto

replace with stainless from McFadden-Dale. I prefer SHCS over the button heads. If you want you can polish the ribs off the heads
 
  #8  
Old 08-07-2011, 07:58 PM
river rat
river rat is offline
One Of The Regulars
Thread Starter
Join Date: Sep 2007
Posts: 157
Likes: 0
Received 0 Likes on 0 Posts
Default

Yeah, that was my intention, to use the allen head bolts. My bike is also an 05. Guess it wouldn't hurt to pick couple different sizes (1/2" and 5/8").
 
  #9  
Old 04-30-2019, 04:50 PM
Daniel Poirier
Daniel Poirier is offline
New Member
Join Date: Apr 2019
Location: Gatineau
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default

VERY late to respond to this (and sorry for reviving such an old thread), but this site is what came up when I googled to find out what to do about those stupid torx screws on my sportster's clutch inspection cover. So thanks for all contributions above, it helped a lot (even thouh I was left confused about a proper replacement screw).

I measured the screws on mine (2008 Sportster 1200XL) and they are DEFINITELY 1/4"-20 5/8"

I will DEFINITELY replace them with proper stainless hex/allen button screws.

While I'm bitching about Harley's silly use of crappy fasteners, I'm also pissed that they spec the torque in IN-lbs (when all other specs in the world, and all torque wrenches that I own, are specified in FT-lbs). It means that the previous owner incorrectly torqued these screws to 12 times the intended value. Sheesh... The spec says 84-108 IN-lbs, which means a *very* low torque of 7-9 LB-lbs (i.e. not much more than finger tight).

No wonder there are thousands of complaints about stripped torx screws on Harleys...
 
  #10  
Old 04-30-2019, 05:57 PM
Zerk's Avatar
Zerk
Zerk is offline
Elite HDF Member
Join Date: Jul 2009
Location: Straight Jacket Memories and Sedative Highs
Posts: 3,625
Received 292 Likes on 236 Posts
Default

Originally Posted by mkguitar View Post
3 different sizes. ( and it's possible they've changed from year to year)

the primary cover has short and long bolts, the derby has even shorter.

I'm guessing you are changing hardware? just pull one of each and measure- good time to change the derby to allens from torx

mike
If you think about it hex and allens, are 3/4 of the way to being stripped. Torx has the most surface area. Lots of guys have screwed up by using T25. Also button head bolts torx or allen are not that deep.

I put anti seize on derby and inspection cover, and not a problem.

I have thought 12pnt might look cool and give you plenty of bite.

If you convert to SS remember to use antiseize. Also that it changes torque values. I believe primary calls for loctite. Not sure if that will protect you or not.
 

Thread Tools
Search this Thread
Quick Reply: Bolt size


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: