Differential cover bolts
Thread Starter
JK Freak
Joined: Jun 2008
Posts: 537
Likes: 2
From: Greenville, VA
I brought one included with the cover to work, they are definitely 5/16-18 threads overall length on a set of calipers is 1.060" and thread length appears to be .851-.855", so 1 inch in length.
Thanks for the clear coat advice.
Thanks for the clear coat advice.
Thread Starter
JK Freak
Joined: Jun 2008
Posts: 537
Likes: 2
From: Greenville, VA
I got a bag of 100 for 11 bucks, grade 8, 1" length, they're too long compared with the ones that came with the Riddlers. About .13-.14" longer overall. Going to bring them back and try to get something shorter.
JK Junkie
Joined: Dec 2008
Posts: 2,070
Likes: 0
From: Kzoo, MI
I've heard since grade 8 bolts are much harder than grade 5, they are more susceptible (spelling?) to shearing, like say if a bolt head lands on a rock the head will shear off, where as grade five will give a little. Now if the grade 8 bolts are countersunk and protecting, that isn't an issue, but I've always used grade five for diff covers and sliders, at least on the exposed bolt heads. You could always use grade 8 on all but the bottom few bolts
Just a thought
Just a thought
JK Super Freak
Joined: Jun 2008
Posts: 1,116
Likes: 3
From: Calgary, Alberta, Canada
I've heard since grade 8 bolts are much harder than grade 5, they are more susceptible (spelling?) to shearing, like say if a bolt head lands on a rock the head will shear off, where as grade five will give a little. Now if the grade 8 bolts are countersunk and protecting, that isn't an issue, but I've always used grade five for diff covers and sliders, at least on the exposed bolt heads. You could always use grade 8 on all but the bottom few bolts Just a thought
Just a thoughthttp://www.rockcrawler.com/techrepor...ners/index.asp
Thanks for posting the link
JK Super Freak
Joined: Jun 2008
Posts: 1,116
Likes: 3
From: Calgary, Alberta, Canada
You're very welcome. A member of the Jeep club I belong to (who also happens to be an engineer) sent me the link when I was asking some questions about why Warn specifies Grade 5 bolts for mounting winches.
The answer seems to be "Because they're good enough"...but I tend to lean in the direction of overkill when it comes to picking out bolts, recovery gear, and armour.
The answer seems to be "Because they're good enough"...but I tend to lean in the direction of overkill when it comes to picking out bolts, recovery gear, and armour.
JK Super Freak
Joined: Apr 2007
Posts: 1,699
Likes: 2
From: Lancaster Pa
I've also found a site (use-enco.com) that sells button head cap bolts in the size (i think) i need. I've also order them in a Grade8. This is what I was originally looking for.
Button Head Cap Screw - Socket Products Type: Button Head Cap Screws Thread Size: 5/16-18 Length Under Head: 7/8 Material: Alloy Steel - Grade 8 Finish/Coating: Black Oxide
Type: Button Head Cap Screws
Thread Size: 5/16-18
Length Under Head (Inch): 7/8
Material: Alloy Steel
Material Grade: Grade 8
Key Size (Inch): 3/16
Finish/Coating: Black Oxide
Manufacturer Part Number: 64060
Button Head Cap Screw - Socket Products Type: Button Head Cap Screws Thread Size: 5/16-18 Length Under Head: 7/8 Material: Alloy Steel - Grade 8 Finish/Coating: Black Oxide
Type: Button Head Cap Screws
Thread Size: 5/16-18
Length Under Head (Inch): 7/8
Material: Alloy Steel
Material Grade: Grade 8
Key Size (Inch): 3/16
Finish/Coating: Black Oxide
Manufacturer Part Number: 64060