Author Topic: floor board screws and u nuts  (Read 4872 times)

steve-0

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floor board screws and u nuts
« on: November 20, 2011, 07:00:50 PM »
i haven't tried these, let me know if you have better sources

 screw size is #14 by 3/4" long
the original u nuts had a throat depth of 1" from center of the hole.
the longest needed is 3/4" with most of the holes being around 1/2" from the edge.
here are some options

screw part number 90054A313
http://www.mcmaster.com/#catalog/117/3018/=f0tjg6

u nuts
this one doesn't list the throat depth
part number 74-3975
http://www.car-pak.com/Fasteners/c22/p3061/74-3975/product_info.html  


1/2" throat depth
part number Auveco # 13220
http://www.thecliplink.com/nuts-en/u-nuts/u-nut-6.3mm-14-screw-size-.7-1.5mm-range-50-per-box.html
http://dixied.com/store/product4176.html

5/8" throat depth on this one
part number #20000T
http://www.autobodysupplies.com/foldclips.htm
« Last Edit: November 20, 2011, 07:13:33 PM by steve-0 »

Outsider

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Re: floor board screws and u nuts
« Reply #1 on: November 21, 2011, 05:10:12 PM »
Hi Steve, Actually the floor screws are 1/4" 14 pitch thread. They are very hard to find without having a washer formed into the head. I got lucky and found a place that had some of the original style a couple of years ago so I bought all of them they had, and haven't found any more since.

Steve
« Last Edit: November 21, 2011, 05:12:17 PM by Outsider »
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steve-0

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Re: floor board screws and u nuts
« Reply #2 on: November 21, 2011, 09:17:36 PM »
thanks outsider
the original u-nuts i have are marked 14z. i compared original screws to some #14 screws at the local hardware store and they looked like a match but i didn't actually try them so i will do that and adjust the post. i also haven't been able to find them without the washered head.

it was hard to find u-nuts with a deep throat. try looking up "deep throat nut " on google  ;D

here are some 1/4" 14 threads per inch but they have that washer.
part number 93880A313   
http://www.mcmaster.com/93880A313   
« Last Edit: November 21, 2011, 09:26:27 PM by steve-0 »

Outsider

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Re: floor board screws and u nuts
« Reply #3 on: November 22, 2011, 05:13:56 AM »
Here are some pictures of an original floor screw and the ones I found.



I have a box of the ones from McMaster Carr if someone wants them I will sell them cheap!

Steve
Lots of green "junk" as my wife likes to call it.
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Outsider

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Re: floor board screws and u nuts
« Reply #4 on: February 26, 2012, 08:49:24 PM »
Here is a picture of the screws from Mcmaster-Carr. I bought 100 of these before I found the ones I am using now. If anyone wants these from Mcmaster-Carr I will sell them cheap! $10.00 for what I believe is still 100 of them plus shipping.



Steve
Lots of green "junk" as my wife likes to call it.
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steve-0

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Re: floor board screws and u nuts
« Reply #5 on: June 17, 2012, 01:23:05 PM »
here are some unwashered screws.
these don't have the screwdriver slot but some of the originals did not have the slot.

1/4" x 14 threads per inch  3/4" long
http://www.imperialsupplies.com/item/0664102

http://www.fastenal.com/web/products/detail.ex?sku=0139489

#14 x 1" long screw
i think #14 and 1/4" screws are close enough to be interchangeable but i still need to verify this.
here is a no washer screw with the slot in size #14    1" inch long. after trimming the tip of the screw with your sander you will be perty close to the 3/4" originals.

http://www.titanfasteners.com/detail.aspx?item=FNA04032UNSL&id=334


here is one in stainless . they dont show the head style so i dont know if it has the indented head. no slot though.
manufacturer Elco part #HFTH600
you have to order 2500 of them on this link

http://hurripanel.com/-strse-924/Topseal-Stainless-Steel-Type/Detail.bok
« Last Edit: June 17, 2012, 02:34:07 PM by steve-0 »

steve-0

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Re: floor board screws and u nuts
« Reply #6 on: March 22, 2014, 11:02:01 PM »

Chrishig

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Re: floor board screws and u nuts
« Reply #7 on: November 28, 2018, 05:21:34 PM »
I found a good replacement for u nuts. I run a Polaris dealership and found them in my parts bins.  The Polaris part number is 7670145 and can be sourced at any Polaris dealer.
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8683jb

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Re: floor board screws and u nuts
« Reply #8 on: November 28, 2018, 09:24:46 PM »
Those look perfect Chris. Thanks for the tip.

Jon
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