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Fan Blade Hub Hardware Size?
Posted: Sun Dec 18, 2022 7:09 pm
by Stephen1915
What is the exact size, (length and thread size) of the 4 screws and lock washers that hold the fan blades to the hub?
Thanks!
Re: Fan Blade Hub Hardware Size?
Posted: Sun Dec 18, 2022 7:22 pm
by Allan
1/2" long x 1/4" coarse thread,slotted drive round heads.
Here in Australia, we can use 1/4: Whitworth screws.
Allan from down under
Re: Fan Blade Hub Hardware Size?
Posted: Sun Dec 18, 2022 7:42 pm
by Stephen1915
Allan, do you mean 1/4-20?
Re: Fan Blade Hub Hardware Size?
Posted: Mon Dec 19, 2022 3:37 am
by Allan
Stephen, I am not into thread counts. 1/4" UNC is the correct size. 1/4" whitworth is an excellent substitute, same number of threads, just a little difference in pitch. The screws, going into aluminium, need to be coarse thread.
Allan from down under.
Re: Fan Blade Hub Hardware Size?
Posted: Mon Dec 19, 2022 8:39 am
by speedytinc
Stephen1915 wrote: ↑Sun Dec 18, 2022 7:42 pm
Allan, do you mean 1/4-20?
Yes, 1/4-20