3/8-Inch Brass Extension Nut


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3/8-Inch Brass Extension Nut

With the new trend of thicker countertops, extension nuts are needed to compensate for the added thickness when installing product. Use this extension nut for a secure install.


  • Solid brass material for durability and reliability
  • Provide 1-3/8" height extension for marble and granite countertop installation
  • 3/8"-18MPSM
  • Easily installs with adjustable socket wrench
  • Overall Size: (W)1/2" x (H)1-3/4"

Specification Sheet
Parts Diagram


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We offer Free Shipping on 90% of our products. Heavy items such as Bathtubs, Vanities, and sinks may ship via Freight truck.  Base shipping amounts are off the weight and size and where you are located (orders ship from California). Items are normally shipped via FedEx within 24-48 hours of when the order was placed.  Transit time within the US can range from 1 to 10 business days.

Returns & Exchanges

We have 30 Day Returns & Exchanges on all Products
We hope you love your purchase, but we understand that some things just don't work out as planned. If for any reason you are not completely satisfied with an item, you may return it to us for exchange or a full refund less any shipping charges.
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