RepackboxReloading EverythingMidSouth Shooters SupplyLoad Data
Lee PrecisionTitan ReloadingInline FabricationWideners
RotoMetals2
Results 1 to 10 of 10

Thread: looking for Source for 10-36 set screw for older lyman 4 cavity

  1. #1
    Boolit Master


    Join Date
    Jan 2007
    Location
    Highland, Arkansas
    Posts
    1,543

    looking for Source for 10-36 set screw for older lyman 4 cavity

    Lyman currently (sensibly) uses 10-32 set screws for the sprue plate bolt on their 4 cavity molds. But I have a couple older molds with 10-36 threads. Does anyone know where I can get 10-36 set screws these days? I called Lyman and they don't have them. A Lowes and a local hardware as well as a google search also turned up nothing.

  2. #2
    In Remembrance
    montana_charlie's Avatar
    Join Date
    Feb 2006
    Location
    West of Great Falls, Montana
    Posts
    8,414
    Quote Originally Posted by happy7 View Post
    where I can get 10-36 set screws these days?
    I checked my favorite online hardware store, and found zilch, but...

    The screws used for mounting tang sights on Sharps rifles are 10-36. They aren't 'set screws' but could be cut off and 'slotted' for a standard screwdriver.

    Best I can do...
    CM
    Retired...TWICE. Now just raisin' cows and livin' on borrowed time.

  3. #3
    Boolit Master

    Join Date
    Dec 2005
    Location
    Central Massachusetts, U.S.A.
    Posts
    1,283
    These folks are listing a threading die:

    http://www.msdiscount.com/columnar.a...ssioncookieset

    Jack

  4. #4
    Boolit Master
    Join Date
    Jun 2005
    Location
    Alberta Canada
    Posts
    1,214
    how about retapping to 10-32, or an insert-helicoil?

  5. #5
    Boolit Master Morgan Astorbilt's Avatar
    Join Date
    Sep 2007
    Location
    Golden Valley, NC
    Posts
    917
    Tap it 12-28 (#14 drill) or 12-24 (#16 drill)
    Morgan

  6. #6
    Boolit Master

    Join Date
    Apr 2008
    Posts
    4,947
    Allen screws are usually fine threads. They are grade 8. I saw some at Ace Hardware. If the head does not create issues, use one of those.

  7. #7
    Super Moderator




    Buckshot's Avatar
    Join Date
    Mar 2005
    Location
    So. California
    Posts
    11,833
    ...............A 10-36 is a NF-Special. Here ya go:

    Head Cap Screws - Socket Products Type: Socket Head Cap Screws Thread Size: 8-36 Length Under Head: 1-1/2 Material: Alloy Steel - ASTM A574 Finish/Coating: Black Oxide
    MSC # 76819762 | Big Book Page 1842
    Price: $5.09 ea

    At: www.mscdirect.com

    or:

    http://www1.mscdirect.com/CGI/GSDRVS...IT4NO=42708438

    Call them up and when you order specify they ship USPS ist class or some such so you're not paying $8-10 for a couple screws!

    My QC box does 36 tpi, but I sure wouldn't want to mess around single pointing on a piece of #10 blank

    ..............Buckshot
    Father Grand Caster watches over you my brother. Go now and pour yourself a hot one. May the Sacred Silver Stream be with you always

    Proud former Shooters.Com Cast Bullet alumnus and plank owner.

    "The Republic can survive a Barack Obama, who is, after all, merely a fool. It is less likely to survive a multitude of fools such as those who made him their president."

    Shrink the State End the Fed Balance the budget Make a profit Leave an inheritance

  8. #8
    Boolit Master Morgan Astorbilt's Avatar
    Join Date
    Sep 2007
    Location
    Golden Valley, NC
    Posts
    917
    Quote Originally Posted by Buckshot View Post
    ...............A 10-36 is a NF-Special. Here ya go:

    Head Cap Screws - Socket Products Type: Socket Head Cap Screws Thread Size: 8-36 Length Under Head: 1-1/2 Material: Alloy Steel - ASTM A574 Finish/Coating: Black Oxide
    MSC # 76819762 | Big Book Page 1842
    Price: $5.09 ea

    At: www.mscdirect.com

    or:

    http://www1.mscdirect.com/CGI/GSDRVS...IT4NO=42708438

    Call them up and when you order specify they ship USPS ist class or some such so you're not paying $8-10 for a couple screws!

    My QC box does 36 tpi, but I sure wouldn't want to mess around single pointing on a piece of #10 blank

    ..............Buckshot
    Buckshot, the same item came up when I searched their on-line catalog. Look again, it's an 8-36 screw, not 10-36. I checked page 1842 of my Big Book, and it isn't listed, that page has stripper bolts and shoulder screws. Then noticed it's the 2006/2007 catalog, they haven't sent me a new one yet.
    Morgan

  9. #9
    Boolit Master


    Join Date
    Jan 2007
    Location
    Highland, Arkansas
    Posts
    1,543
    Thanks for the ideas. You all are some sharp cookies!

  10. #10
    Boolit Buddy

    Join Date
    Dec 2014
    Posts
    144
    Resurrecting old thread, because I just ran into this problem myself. I bought a Lyman DC 31141 with the sprue plate gone, screw broken off, price was right. Sent off to Lyman for the rebuild kit, which came with a 10-32 sprue plate screw, but the mold wanted 10-36.

    All good advice above -- and I know about replacement 10-36 screws being available -- but I decided to just re-tap the mold 10-32. Key to making this work was a fluteless 10-32 tap, which swages threads instead of cutting. These are pretty common, but here's a pic:
    Click image for larger version. 

Name:	IMG_19801103_175136.jpg 
Views:	9 
Size:	19.5 KB 
ID:	264546
    It also helps a lot that there are only about 4-5 threads of 10-36 in either of the two places they're used on that mold (sprue plate screw, and set screw). The swaging tap is going to push the existing threads back & forth, but 4-5 threads (and 36 vs. 32/inch) is a short enough run that the very last thread would only have to move about 1 thread pitch, and because I just free floated it by hand (with a bit of moly grease), I figure the threads at either end moved maybe 1/2 a pitch, and the ones in the middle less than that.

    Job done, the new threads look good, feel smooth & snug, everything went together correctly, and now I've got a working 31141.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check