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  1. #1
    Join Date
    Dec 2007
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    Default Threading Stainless

    How difficult is it to cut a thread on the end of a stainless steel rod?

    Will a regular set of dies, P&N or Chinese survive it or will it blunt the die?

    Following "Anorak Bob" I was considering changing some of the bars on machine handles to stainless.

    …..Live a Quiet Life & Work with your Hands

  2. #2
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    Jan 2012
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    Default

    Should be OK if you use type 303, it will cut like mild steel and not workharden.
    I'm not familiar with other types.
    Neil

  3. #3
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    Default

    Neil, Would 303 be your most common type or special order?
    …..Live a Quiet Life & Work with your Hands

  4. #4
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    Aug 2011
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    Default

    I recently used a cheap Chinese die to cut a 3/8 NPT thread on some 316 stainless. I was surprised at the result. The thread was nice, clean and well formed. I used Trefolex and backed off after each half turn.

    From memory the die was carbon steel, not even HSS.

    Cheers,

    Simon
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

  5. #5
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    Jun 2011
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    Default

    If you want a reasonable (ie more than say25-50mm) length of thread, there's no way I'd cut it with a die. I'd go and buy a length of 316 allthread in the pitch I needed and weld, thread or otherwise butcher the gripping end to suit the task at hand.

    Some things simply are not worth doing.....

    PDW

  6. #6
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    Oct 2011
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    Default

    Certainly use Trefolex.

    Michael

  7. #7
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    Feb 2013
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    Laidley, SE Qld
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    Default

    Depending on what I'm doing, sometimes I will single point a thread to 90% and finish off with a die.

  8. #8
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    Dec 2007
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    Default

    Quote Originally Posted by Michael G View Post
    Certainly use Trefolex.

    Michael

    Which one? Oil, Paste?
    …..Live a Quiet Life & Work with your Hands

  9. #9
    Join Date
    Oct 2011
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    Norwood-ish, Adelaide
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    Default

    Paste

    M.

  10. #10
    Join Date
    Jan 2012
    Location
    Melbourne
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    Default

    “……common type or special order? “
    We bought a couple of lengths from a supplier in Dandenong, off the shelf not special order. Can’t remember the supplier name, but I see 303 on a few local websites.
    FWIW, Metal Machinability comparison: http://www.engineeringtoolbox.com/ma...ls-d_1450.html

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