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What is the part number for the cover mounting screws used on the NEMA 1 (indoor) QO and Homeline load centers?
Issue:
Current design repair parts

Product Line:
Load Centers

Resolution:
There are 2 lengths of cover screws used with ALL NEMA 1 (indoor) QO and Homeline load centers, a 3/4" and 1/2" long.
1) The 3/4" long cover screw is part number 4020513002K (bag of 10 screws). These screws are used with the NEMA 1(Indoor), Flush mount and Combination covers.
2) The 1/2" long cover screw is part number 4020513001K (bag of 10 screws). These screws are used with the QO surface mount covers or Combination covers used in a Surface mount application.
3) If White load center covers are used, the White head cover screw part number is 4020513003K (bag of 10 screws). This is the 3/4" long White head cover screw used with the White QO and Homeline NEMA 1 (indoor) covers.

NOTES:
1) The above cover screws are a special triple lead, thread-forming screw that is only available through authorized Square D Distributors and are NOT available at local hardware stores. SEE BELOW VISUAL
2) Both the above 3/4" and 1/2" screws have the exact same thread and can be use for either the NEMA 1 (indoor) covers and/or the NEMA 3R (outdoor) deadfront trims if needed.
3) Square D does NOT offer a cover screw longer than the 3/4"
Screws pic

Schneider Electric Canada

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