Aug 2, 2006 · The lock washer may postpone the inevitable departure of the nut from the end of the bolt. But if you don't want to believe me, perhaps you would believe NASA. NASA …

Jan 30, 2006 · I was recently told that lock washers (a.k.a. split washers) were not allowed on A325 structural bolts. Their reasoning was the following in AISC's 9th Ed. of ASD (page 5 …

Mar 30, 2005 · Think I will suggest Lock-tite, super glue, elmer's glue, duct tape or chewed bubble gum (Bazooka of course) and flat washers. The lock-tite will probably suffice.

Feb 14, 2006 · I'm wondering when should lock washers be used? Do they always have to be used with a flat washer? Does it matter what order they go in? As well, in the past I had been …

Dec 3, 2008 · A lock washer is intended to prevent the nut from turning loose. A Belville washer is intended to maintain contact pressure and prevent bolt stretching and/or bus-bar cold flow …

Nov 12, 2008 · Does any one know of any engineering studies performed to determine what if any affect the use of lock washers has on the integerity of s structural joint?

Oct 12, 2006 · The primary reason to not use a lock washer on a SHC is that they don't work. The compressive load required to completely flatten a helical washer and turn it into a "flat" washer …

Dec 18, 2003 · 1) eliminate the lock washer - they are worthless (if you want more information on this subject, perform a search of this site and you will find much information), and this will allow …

Jan 26, 2004 · Is there a general rule in using washers or lock washers with nylock type nuts? In a structural, vibration enviroment? Mating material is steel, fastener grade 8.

Mar 28, 2002 · Helical lock washers have such a low spring rate that before they start to return you will have lost about 90% of the clamp load in the joint and if that happens, you have a …