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Thread Adapters

Thread Adapters

Regular price $5.66 USD
Regular price Sale price $5.66 USD
Sale Sold out
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Thread Type

These thread adapters install on to the bearing end of our hoses and adapt the 1/8" NPT hose thread to other types of bearing threads.

Product Description

All of these thread adapters have one 1/8" NPT female end to fit our hoses.  The other end is available in several different thread types to fit your bearing's grease port thread. 

Our grease extension hoses come with a 1/8″ NPT male thread on the bearing end of the hose. This 1/8″ thread will fit roughly 60% of grease ports without needing a thread adapter. However, not all bearings have this common grease port thread. Grease fitting thread adapters will allow our grease extension hoses to be used with other grease port threads.

The two most common grease port threads are the 1/8″ NPT thread (installed on our grease relocation hoses) and the 1/4″-28 thread. These two threads are used on the majority of bearing grease ports in the US. See the chart below. Other threads are less common but are found in about 10% of applications.

For information on identifying your bearing thread, see our Grease Fitting Thread Identification page.

Thread Adapters are galvanized steel

Grease Fitting Thread Adapter

Bearing Grease Port Threads - Based on Our Sales Data

 60% of bearings 1/8" NPT thread
30% of bearings 1/4"- 28 SAE thread
All remaining bearings (10%) All other threads
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Customer Reviews

Based on 3 reviews
Beau D. (Chicago, US)
The thread adapters were perfect

I didn’t have the right ones at first but they helped me out and sent me the correct ones and they were perfect

Josh D. (Minneapolis, US)
Installed On: Trailer

Thread Adapters

Nicky L.
Perfect fit adaptor

The adapter was a perfect fit. It made short work of a tough job. I highly recommend this company. Shipping speed was acceptable considering the current circumstances of covid-19. I will do business with Grease Extension Hoses again.