Do I really need to replace screws?

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Jun 19, 2016 | 08:47 AM

#11

ILMFBL

Road Warrior

Joined: May 2014

Posts: 1,698

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From: x

[QUOTE=Dan89FLSTC;15252139]There is not a big difference between a nut and a screw...

Man, I always thought there was a huge difference between a nut and a screw, but what do I know.

Jun 19, 2016 | 11:56 AM

#12

langwilliams

Elite HDF Member

Joined: Jul 2010

Posts: 3,830

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From: Lorain Ohio

are they recommending new bolts because of the threads being pre coated with a locktite? I reused mine an applied a little thread locker.

Jun 19, 2016 | 12:08 PM

#13

Dan89FLSTC

Seasoned HDF Member

Joined: May 2008

Posts: 21,143

Likes: 12,706

From: South Carolina

[QUOTE=ILMFBL;15252363]

Quote:

Originally Posted by Dan89FLSTC

There is not a big difference between a nut and a screw...

Man, I always thought there was a huge difference between a nut and a screw, but what do I know.

Corrected my post, thanks.

Jun 19, 2016 | 12:09 PM

#14

OldEnuf2NoBtr

Seasoned HDF Member

Joined: Dec 2009

Posts: 9,162

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From: Doghouse... mostly

Quote:

Originally Posted by langwilliams

are they recommending new bolts because of the threads being pre coated with a locktite? I reused mine an applied a little thread locker.

No, they recommend new bolts because once the correct amount of torque is applied to the bolts, the tensile strength has been run up to it's maximum limits and a second application of torque on the original bolts may cause a shearing failure.

Jun 19, 2016 | 12:10 PM

#15

asm481

Road Master

Joined: Aug 2008

Posts: 1,018

Likes: 17

From: Southeastern Wisconsin

Quote:

Originally Posted by langwilliams

are they recommending new bolts because of the threads being pre coated with a locktite? I reused mine an applied a little thread locker.

I believe the reason to replace is because the threads deform slightly when fully torqued. When we break them loose the threads are now softer metal because they have been worked back and forth. The thread locker is not the reason.
The shoulder verses the thread length is also a specific length by design for the proper tension. Therefore, just any bolt isn't proper either. regardless of grade 5 or 8. Spend the couple dollars on the right parts for your driveline.