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Quality die for 1/2-28 ??

Discussion in 'Gunsmithing and Repairs' started by Autogunner1, Mar 22, 2023.

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  1. Autogunner1

    Autogunner1 Member

    Joined:
    May 29, 2015
    Messages:
    13
    It's time to buy a new 1/2-28 die, I ordered one from amazon as Brownels was out of stock.
    I went to use it to clean up threads on an AR because 3 threads about half way in had been hit at some point. The amazon die immediately felt like it was going to start cutting and not just thread on to clean up. I tried it on 2 other barrels. It appears to be 0.005" too small.

    I don't want to buy another from somewhere else without asking here, so where can one find a die that is good quality and correct size ?
     
  2. earlthegoat2

    earlthegoat2 Member

    Joined:
    Aug 28, 2008
    Messages:
    9,563
    Location:
    SE GA
    A first quality die that size will cost you.

    McMaster Carr does not sell junk tooling and the nearly $84 dollar die they sell in that size is probably about as good of quality as you will get before hitting severe diminishing returns. Unfortunately it is round and will need a special die wrench to use it effectively which you may already have since the one I see one Brownells is also round and in stock so I suppose you are wanting the hex one. The round ones are adjustable though so you won’t be left with a dies that is .005 small. Adjusting a precision tool with just a screw can be finicky though.

    Here is a round one from MSC which may be the same one M-C sells. It’s not often but sometimes MSC has identical products to M-C at better prices. m-C has never been known for low prices. Lower maybe but nit low. Plus they have just about anything.

    https://www.mscdirect.com/browse/tnpla/03694304?gclsrc=aw.ds&product_id=03694304&rd=k&pcrid=-99&gclid=CjwKCAjwzuqgBhAcEiwAdj5dRkvahbr6yq1Hj1JPe263bGcgF8d_N14wB9H3bqgH23FiqLNHJtTocxoC1NsQAvD_BwE&mkwid=|dc&cid=ppc-google-

    This one from MSC is labeled an “economy” die but may be better than the one from Amazon just because it is actually sold from a reputable industrial supplier. I cannot vouch for the die personally but MSC does have some less expensive stuff that still does the job well.

    https://www.mscdirect.com/product/details/79770491

    The Brownells die sells for around $33 though so I guess I may not have a proper grasp on how quality and cost correlate for this size die.
     
    Lo-Profile, Blue68f100 and LoonWulf like this.
  3. Autogunner1

    Autogunner1 Member

    Joined:
    May 29, 2015
    Messages:
    13
    That is all great information ! Thanks very much for your response. Right, I have all types of die wrenches so I'm good that way. I've ordered end mills and other things from both of them over the years and completely forgot to check them. I'll go with one of them, thanks again !!
     
    LoonWulf and earlthegoat2 like this.
  4. beag_nut

    beag_nut Member

    Joined:
    Nov 21, 2011
    Messages:
    1,521
    Location:
    Seymour, CT
    mcmastercom.com
    Industrial supplier, who will sell to anyone. Top quality.
    https://www.mcmaster.com/
     
  5. gunmechanic

    gunmechanic Member

    Joined:
    Jul 2, 2021
    Messages:
    226
    Location:
    up state ny
    Mcmaster carr or snap-on are the best dies i have used .
     
    beag_nut likes this.
  6. a5werkes

    a5werkes Member

    Joined:
    Apr 28, 2009
    Messages:
    542
    Got this split die from Brownells.
    IMG_6722.jpg
     
  7. MachIVshooter

    MachIVshooter Contributing Member

    Joined:
    Aug 11, 2005
    Messages:
    17,830
    Location:
    Elbert County, CO
    If it's just dinked in one spot on a few threads, get a fine Swiss thread file and clean up just that area. Any thread cutting die is going to do exactly that, and most likely undersize them.

    I rarely chase threads with a die unless they're pretty mangled and on something I can't easily put on a lathe. Otherwise, I'll chuck them up and either pick up the threads and single point them or run at low speed using a Swiss file followed by 600 grit.
     
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