Monday, February 6, 2012
Nylon Bolts: Are They Slippery?
I am considering use of nylon 1/4"-20 bolts in an application where they are not hold a load against shear or tension--simply clamping down on a piece of round metal. The goal is to use nylon so that clamping does not damage the finish. Are these likely to be effective methods of applying 100 pounds of force against an anodized aluminum surface?
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100 pounds of clamping force IS tension. The nylon bolts would probably not stand up to it.
ReplyDeleteBut you might try nylon washers under regular bolt heads.
Well, this surprised me:
ReplyDeletehttp://www.plasticnutsandbolts.com/mechtech.html
I was expecting a lot lower tensile strength figures for nylon 6/6. Guess I'll have to update my Machinery's Handbook with a later edition.
no, won't work. You can get set screws with nylon or brass buttons in the end that will do the job, but nylon screws won't hold, and I suspect not even the nylon button will hold. Depends on what axis the 100 lbs of force is applied and how it is clamped and the geometry of the part being clamped. is it solid or is it tubular? tubular is bad because you'll just make the part egg-shaped and it will slip.
ReplyDeleteyou can see what McMaster has here: http://www.mcmaster.com/#set-screws/=g5bc29
ReplyDelete