Brockport Bill 1,661 #1 Posted November 19, 2023 can someone tell me the Die spec size and thread for a 5/8 spindle shaft on the bottom blade end of the shaft? Taps and Dies is not something i have worked with much and i have a badly burred shaft blade end so hard to determine correct Die fit and I don't want to guess wrong Die? Thanks Share this post Link to post Share on other sites
Lee1977 6,656 #2 Posted November 19, 2023 Mine are all .NF 3/4 -16. My guess is that it's National Fine threads 5/8 -18. Share this post Link to post Share on other sites
ri702bill 8,316 #3 Posted November 19, 2023 Check the hardness FIRST in that threaded area by running a file over it. If you can't leave a mark with file, the part is HARD - probably harder than the die. Sometimes a 60 degree jewlers file is your only choice to clean up the thread..... 1 Share this post Link to post Share on other sites
Brockport Bill 1,661 #4 Posted November 19, 2023 3 hours ago, ri702bill said: Check the hardness FIRST in that threaded area by running a file over it. If you can't leave a mark with file, the part is HARD - probably harder than the die. Sometimes a 60 degree jewlers file is your only choice to clean up the thread..... thanks ----- not familiar with a 60 degree jewlers file or where to buy ??? Share this post Link to post Share on other sites
Brockport Bill 1,661 #5 Posted November 19, 2023 3 hours ago, ri702bill said: Check the hardness FIRST in that threaded area by running a file over it. If you can't leave a mark with file, the part is HARD - probably harder than the die. Sometimes a 60 degree jewlers file is your only choice to clean up the thread..... found some files on line - - harbor freight etc - - are Needle files same thing as jewler's files? Share this post Link to post Share on other sites
ri702bill 8,316 #6 Posted November 19, 2023 29 minutes ago, Brockport Bill said: thanks ----- not familiar with a 60 degree jewlers file or where to buy ??? Usually part of a 10 or so piece set. DO NOT waste your time or money on a cheap knock off set. Nicholson is a good name...... 3 Share this post Link to post Share on other sites
Ed Kennell 38,146 #7 Posted November 19, 2023 About $15 bucks for a thread file. 2 Share this post Link to post Share on other sites
oliver2-44 9,739 #8 Posted November 20, 2023 6 hours ago, Ed Kennell said: About $15 bucks for a thread file. Share this post Link to post Share on other sites
Brockport Bill 1,661 #9 Posted November 20, 2023 6 hours ago, Ed Kennell said: About $15 bucks for a thread file. actually i have that thread file and that's what i reverted to --- but unfortunately one spindle shaft was very damaged at the blade end so that's why i wanted to use a Die to fix the damaged threads -- Using a Die made more sense for a better result than a thead file 2 Share this post Link to post Share on other sites
