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Discussion Starter · #1 ·
Holosun specifies 15 inches/lb. of torque, but C&H Precision (the mounting plate I'm using for my Pro Cut) specifies 10 inches/lb. of torque.

Which one do I go with?
 

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I agree with rpninja636. When you have a conflict like that, go with the lesser of the two.
 
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Adding the plate may change the torque requirement. Add blue thread locker and witness marks.
Hmm. But the plate would be similar to a crush washer on an oil drain plug, no? And in either case (washer / no washer) I’d torque to the same value. So why would inserting a plate change the torque value of the fastener?
 

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Discussion Starter · #11 ·
UPDATE: I contacted C&H and they said to go with their 10 lb. torque value.
 

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Hmm. But the plate would be similar to a crush washer on an oil drain plug, no? And in either case (washer / no washer) I’d torque to the same value. So why would inserting a plate change the torque value of the fastener?
If you Google it, adding a washer can change a torque spec requirement. An oil pan bolt may include a crush washer by design and a proper torque spec is issued based on that.

The manual calls for 15 ft-lb and C&H says 10 ft-lb so it could be their plate hardness that changes the requirement... I have no idea, I was just increasing my post count...lol
 

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If you Google it, adding a washer can change a torque spec requirement. An oil pan bolt may include a crush washer by design and a proper torque spec is issued based on that.

The manual calls for 15 ft-lb and C&H says 10 ft-lb so it could be their plate hardness that changes the requirement... I have no idea, I was just increasing my post count...lol
Thanks, I find this stuff interesting, so I’ll look into it some more.

I suspect either value would work fine, but the use of an aluminum plate would concern me enough (potential for the CHPWS aluminum to deform more under compression, than say the nitrided steel plate that Forward Controls uses) to torque stripe it and recheck torque every 500 rounds or so.

10 in lb is not a lot, I’d be sure and use a torque wrench or fix it stick that has a current cal sticker to some kind of metrology standard.
 

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If you Google it, adding a washer can change a torque spec requirement. An oil pan bolt may include a crush washer by design and a proper torque spec is issued based on that.

The manual calls for 15 ft-lb and C&H says 10 ft-lb so it could be their plate hardness that changes the requirement... I have no idea, I was just increasing my post count...lol
C&H is in inch-pounds just for clarity.
 
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