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: The use of split lock washers
: The use of split lock washers -- CCR5600Design	Post Reply	Top of thread	Forum

Posted by: Kelly Bramble ® 11/13/2007, 11:48:54 Author Profile eMail author Edit

Interesting, "First, what if any evidence has been found to prove that split lock washers are prone to failure during seismic occurrences" I think this is a question you should pose (politely) to the customer as there could be an important lesson here. I wonder what they have done to replace the function of the split washers. "Second, since it is the responsibility of the customer to install and assemble the product in the field in accordance with their own quality standards, could the washers be provided and simply left out of the assembly by the installer?" Of course! Installers leave stuff out all the time. This is where quality personnel earn their money when critical applications are involved. The customer could re-specifiy the installation with an exception for the split washers. Let us know what your conclusions are!

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: : The use of split lock washers
: : The use of split lock washers -- Kelly Bramble	Post Reply	Top of thread	Forum

Posted by: Marky ® 11/13/2007, 12:16:16 Author Profile eMail author Edit

Ron, I usually call out for a kep nut or a sems screw with the lock washer already in place. It prevents the "I didn't think that we needed theory" that I usually hear. I'll kindly pay you Tuesday..for a hamburger today....Whimpy

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: : : The use of split lock washers
: : : The use of split lock washers -- Marky	Post Reply	Top of thread	Forum

Posted by: CCR5600Design ® 11/13/2007, 12:32:24 Author Profile eMail author Edit

Marky, The only drawback to keps nuts are the external teeth of the captive lockwasher. For the installations we encounter, external tooth lock washers are prohibited for safety reasons relating to possible snag hazards. Thanks for the input, though. Ron "What we need are more people who specialize in the impossible." - Theodore Roethke

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: : : : The use of split lock washers
: : : : The use of split lock washers -- CCR5600Design	Post Reply	Top of thread	Forum

Posted by: Marky ® 11/13/2007, 13:13:12 Author Profile eMail author Edit

Thanks Ron....never knew that. I learned something today....I can go home now. I'll kindly pay you Tuesday..for a hamburger today....Whimpy

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