3/8" FLARE NUTS, 263-031
+5% Tax • Shipping calculated at checkout.
U.S. Duties/Taxes, if applicable, may be due at time of delivery.
Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
Not sure this fits your furnace? Call us — we're happy to help
Ensure a secure, leak-proof connection in your HVAC, refrigeration, or gas appliance systems with these high-quality 3/8" flare nuts. Designed specifically for use with flared copper tubing, these brass fittings provide a reliable mechanical seal that eliminates the need for soldering or brazing. Whether you are repairing an air conditioning unit, installing a gas range, or maintaining a refrigeration system, these flare nuts offer the durability and precision required for high-pressure environments. They are a crucial component for both professional technicians and DIY appliance repair, providing a tight fit that resists vibration and temperature fluctuations in residential and commercial appliances.
Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.
1-778-759-9864Mon–Sat 8AM–5PM PT · Or email parts@bcfurnace.com
Compatible parts and related replacements
Yes, the 263-031 is a genuine OEM, or a factory replacement manufacturer approved part. We source all Copper Fittings from authorized distributors to ensure exact-fit compatibility. This Copper Fitting is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
The easiest way is to match the part number (263-031) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible Copper Fittings for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
Most Copper Fittings including the 263-031 ship within 1–2 business days from our warehouse. We ship across Canada and the United States, and worldwide, with tracking on every order. For urgent furnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Copper Fittings orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 263-031 is in stock before visiting.
Still not sure this is the right part? Call 1-778-759-9864 and we will check your model number with you.
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