Pasco 4511 1/2" IPS Thread & Nipple Internal Key

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WHAT OUR CUSTOMERS SAY…

“The vacuum breaker on my outdoor spigot failed and Noel's Plumbing was the only placeI could find that had the appropriate mfr. part. I sent a text with photos on Wednesday evening to make sure the part I found was correct. In less than 2 hours later, I had a reply confirming it was the correct part. Placed my order that evening and received the part on Saturday afternoon (about 2.75 days) and my plumbing issue was resolved! I highly recommend - I really appreciated the prompt and pleasant response. ”

-Kimberly S.

04/25/2026

$39.27

The Pasco 4511 is an internal nipple wrench (or internal nipple key) designed for 1/2-inch IPS (Iron Pipe Size) plumbing applications. It is used to install, loosen, or tighten pipe nipples and to remove broken threaded pieces from within fittings without damaging external finishes like chrome.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, asknoel@noelsplumbingsupply.com, or via the text widget on this screen.

SKU: 52451 Categories: Brass Nipples & Fittings, Plumbing Tools Tag: Universal Fit

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The PASCO 4511 Internal Nipple Wrench (1/2″ IPS) is a time-saving plumbing tool engineered for homeowners and DIYers tackling tough bathroom or kitchen repairs. Whether you are replacing a broken shower arm, removing frozen fittings, or working on delicate chrome fixtures, this internal pipe wrench bites hard from the inside so you can complete your project without scratching finished surfaces.

4511

It is engineered to expand or grip internally against the inside walls of a pipe or fitting.
Made from precision-machined, hardened alloy steel or heavy-duty brass construction to ensure durability under high torque.