Napoleon N510-0018 5/16" Stainless Steel Hole Plug for Napoleon Grills

What Problem This Part Solves

The N510-0018 closes a factory 5/16-inch diameter opening in compatible Napoleon grill assemblies.

If the original plug is lost or damaged during servicing or disassembly, an unused opening may remain visible. Installing the correct OEM plug restores the original finished appearance and factory component arrangement.

Because Napoleon specifies this as a stainless steel component, it is suitable for the environment in which the original grill hardware is installed.

Key Features

• Genuine Napoleon OEM replacement part

• Napoleon part number N510-0018

• 5/16-inch diameter hole plug

• Stainless steel construction

• Designed for factory openings on compatible Napoleon grills

• Helps close and finish an unused mounting or access hole

• Direct replacement for a missing or damaged original plug

• Small hardware component used across select Napoleon grill assemblies

• Factory PRO665 documentation confirms N510-0018 as a “plug, 5/16 dia hole” 

• Sold individually unless otherwise specified

Compatibility / Fits Models

N510-0018 appears in factory parts documentation for select Napoleon grills, including the Built-In Prestige PRO 665 platform. Napoleon's official BIPRO665 parts list identifies N510-0018 as item #81, “plug, 5/16 dia hole.” 

Because this is a small general-purpose hardware component, Napoleon may use it in multiple grill assemblies and model generations.

Confirmed application includes:

• Napoleon Built-In Prestige PRO 665

• BIPRO665 Series

• Select additional Napoleon Prestige / Prestige PRO configurations using N510-0018

For a small hardware part like this, matching the part number in your grill's factory schematic is more reliable than ordering based only on grill series.

Installation / Use Instructions

1. Turn off the grill and allow it to cool completely.

2. Locate the factory 5/16-inch opening where the original N510-0018 was installed.

3. Install the replacement plug securely into the original opening.

No modification should be necessary when replacing the same factory part.

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FAQ Section

Does this fit my grill?
N510-0018 is used on select Napoleon grills, with factory documentation confirming its use on the Built-In Prestige PRO 665. Because small hardware components can vary by model revision, confirm N510-0018 in your grill's parts diagram before ordering. 

What is N510-0018?
It is a plug for a 5/16-inch diameter hole. Napoleon's official listing describes it as “PLUG, 5/16 DIA HOLE STN STL.”

What is this part made of?
Stainless steel. This is explicitly specified in Napoleon's official N510-0018 description.

Is N510-0018 a screw?
No. Despite some third-party listings describing N510-0018 as a 10-24 x 3/8 screw, Napoleon's own parts documentation identifies it as a 5/16-inch diameter hole plug. 

Why choose the genuine Napoleon N510-0018?
The OEM part provides the factory-specified 5/16-inch size and stainless steel construction for compatible Napoleon applications, avoiding the fit uncertainty of a generic plug.