Big D 0 #1 Posted June 14, 2020 Could anyone help us with the size and thread for the 3 nuts holding the deck on please. Look to be about 3/4" (16mm) Share this post Link to post Share on other sites
Big D 0 #2 Posted June 14, 2020 Can anyone help with the size and thread for the three nuts locating the deck on our TORO 73440 Thank you Harry and the D's Share this post Link to post Share on other sites
Big D 0 #3 Posted June 14, 2020 Well of course there's proof if needed that we're Newbies ...... The nut holds the blades on NOT the deck. Durrrrrrrrr! Share this post Link to post Share on other sites
new2horses 287 #4 Posted June 14, 2020 It is a 3/4" national fine thread jam nut. 1 Share this post Link to post Share on other sites
953 nut 57,969 #5 Posted June 14, 2020 The nuts that hold your mower blades on are 3/4-16 Jam Nuts. Toro wants an arm and a leg for them, here is a listing in the USA where you can buy them for a good price. Hope you can find a good source in the UK. https://www.ebay.com/itm/6-Pack-3-4-16-RH-STEEL-JAM-NUT-NUTS/390675312710 1 Share this post Link to post Share on other sites
Lee1977 7,041 #6 Posted June 14, 2020 You really need a 1 1/8" six point socket to keep from round off the nut. 1 1 Share this post Link to post Share on other sites
pfrederi 18,334 #7 Posted June 14, 2020 If you mean the nuts holding the blades on 3/4 16 thin (jam) Share this post Link to post Share on other sites
tunahead72 2,518 #8 Posted June 14, 2020 4 hours ago, Big D said: Could anyone help us with the size and thread for the 3 nuts holding the deck on please. Look to be about 3/4" (16mm) Something's not adding up here... I'm not sure I can tell exactly from your photo, but I think I see your 16 mm inside measurement. Mathematically, that would work out closer to a 5/8" i.d., not 3/4". Also, the 3/4" bolts that hold the blades on would measure 1-1/8" across, not the 1" that I see here. So, where do these nuts go exactly? And which deck are you working on? Share this post Link to post Share on other sites
tunahead72 2,518 #9 Posted June 14, 2020 4 hours ago, Big D said: Well of course there's proof if needed that we're Newbies ...... The nut holds the blades on NOT the deck. Durrrrrrrrr! I left a post on your other thread about this. My apologies if I'm not seeing this right. 1 Share this post Link to post Share on other sites
Big D 0 #10 Posted June 14, 2020 Thank you all. I'll report back when I find a UK supply Share this post Link to post Share on other sites
lynnmor 7,568 #11 Posted June 14, 2020 59 minutes ago, tunahead72 said: Something's not adding up here... I'm not sure I can tell exactly from your photo, but I think I see your 16 mm inside measurement. Mathematically, that would work out closer to a 5/8" i.d., not 3/4". Also, the 3/4" bolts that hold the blades on would measure 1-1/8" across, not the 1" that I see here. It adds up just fine, the tap drill size for a 3/4-16 thread is what you are measuring. The poor quality nut and crude way of measuring does cause the 1-1/8 to appear wrong. 1 Share this post Link to post Share on other sites
peter lena 9,092 #13 Posted June 14, 2020 big d , those spindle nut thread shafts should first be cleaned up with a FINE THREAD DIE NUT ,and lubricant that will ensure clean and detailed threading , i would also use never seize on the threads for future service . use a 6 point impact socket and electric impact gun for easy removal. while you are there a good time to scrape down the underside of the deck , and soak it down with penetrating oil or chain and cable lube . to stop rust and feed the metal, pete Share this post Link to post Share on other sites
