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mlwinnig's avatar
mlwinnig
Explorer
Dec 23, 2017

What is that stupid RV fastener used everywhere?

Used in 2000 Dutchmen TT and 1995 Newmar Class A and, I think, 1976 Shasta TT.

It looks a little like a Phillips with a square drive center but it's not! (I have used screws which could be driven with either and it's not the same). The "wings" are somewhat curved.

I have had to buy complete security bit sets to get the single bit (Menards and Harbor Freight). HF set does not identify it though sizes appear to be 8 and 10. I think this one is the 10.

I want to buy a bunch of longer impact-rated bits for an impact driver.

Help please!

Thanks!
  • It could be a Robertson Screw,they are used a lot in RV stuff.Does it look like this.


    You can buy all types of bits that fit it on Amazon
  • If it not square it's probably a Clutch Drive , or a Supa Drive that's a cross between square and philips, using a #2 square usually works. Not used for production much anymore, but still out there.
  • Not stupid at all. It's a production screw item that can be power driven without fear of stripping the head. Buy the correct drive bit and be happy.

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