Screw for Waterways 640-1800 Drain Cover

mchartra

0
Bronze Supporter
Oct 8, 2013
20
Canton MI
Pool Size
20500
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Hey gang. Somehow, my bottom drain cover screws fell out and I cannot locate them. There are 4 screw holes on the cover but according to the manuals I found, it appears only 2 screws are used to secure the cover?

I looked at the 2nd drain (I have 2 at bottom) and only 2 are present there but the PB had to replace the liner under warranty a few years ago and am now wondering if they misplaced a few?

Anyways, best I can tell the cover screws are SS #6 1" long but I can't find the specs for the threads. Was hoping to simply go to the HW store to find replacements but I want to make sure I match the thread spacing.

Does anyone have a suggestion on a replacement screw?

Also, I can't find the exact manual on the Waterways site for my cover based on the numbers on the drain cover?!? Seems they make a few different similar looking covers for vinyl liner pools but none exactly match part number and surprising to see different part numbers for the cover screws...

Here's what I dug up. If anyone has any thoughts, I would appreciate it.

Many thanks!!
Marc
 

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