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Where can I find a driver blade guide and driver blade seal for a Hilti RN312 framing nail gun?

I have located a "bumper/piston stop" and an o-ring rebuild kit, but I need the driver blade guide and the driver blade seal. I contacted Hilti and they informed me that the RN312 was discontinued in 1993 and that I may be able to find parts from a past distributor???

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  • Jaime Mercado Jul 26, 2012

    where did you find the bumper/piston stop for the hilti rn 312. I need one

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  • 425 Answers

That was basically the same tool (with a few small differences) as the Spotnails MNS5. On the Spotnails version it uses a round, thick piece of plastic with a D shaped hole for the driver guide. There was no driver blade seal. If that is what you need I may have a few left in stock. We are Twin City Supply in Loves Park, Illinois.

Posted on Mar 06, 2012

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Posted on Jan 02, 2017

  • 142 Answers

SOURCE: Gun stopped driving nails, air escapes from top,

has the gun been cleaned and oiled, i think not.

take the head bolts out of the top of the gun. make sure you pay attention to how everything comes out so you can put it back together.

shake the gun upside down so that the piston comes out. wipe everything down with any petroleum based cleaning solvent to remove all the gunk and reassemble.

pour about 10 dropsof oil down the air input, let it sit there about 5 mins and hook up the air and it should work

Posted on Sep 23, 2009

  • 1383 Answers

SOURCE: My husband has a Hilti RN312 nail gun and can not

The company below sells a full line of nails for your gun. The rn312 uses 17 degree nails and can be ordered from www.spotnails.com. Good luck with your nailing projects.

Posted on Aug 11, 2010

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If gun firing but nails not being driven could be one of two basic problems:
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Empty magazine, does follower move to top of magazine. Push gun against work piece, does fan motor start? Yes - jam in magazine or lock out bar not operating. (this would allow nail un to fire when out of nails)
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Nail guns work on the principle that an explosion pushes the piston driver forcing a nail into the work piece, after the explosion a vacuum is created and it is this that 'sucks' the piston/driver back up the cylinder.

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Special order only and they are expensive. We used to sell the Spotnails MNS5 which was the same tool as the Hilti. All we have left are some 8 penny nails. We have inquired about more as Spotnails does not produce them anymore and the cost wasn't worth it. You will be better off to buy a newer gun that shoots a more common nail.

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My husband has a Hilti RN312 nail gun and can not find nails for it, do you have an idea where we could find some?


The company below sells a full line of nails for your gun. The rn312 uses 17 degree nails and can be ordered from www.spotnails.com. Good luck with your nailing projects.

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