Nipples, sockets and reducers are the connecting tissue of any threaded pipework system. Each one does a specific job, and using the right type in the right place keeps a system tight and serviceable.
A nipple is a short length of pipe, threaded at both ends, used to join two female-threaded fittings. Hex nipples have a flat across the middle for a spanner — useful in tight spaces. Close nipples are threaded their full length and used where space is at a premium.
A socket connects two male-threaded pipe ends, providing a female thread on each side. Reducing sockets step down from one thread size to another, which is the most common use case on systems where port sizes don't match line sizes.
Reducers perform a similar function but are typically barrel-shaped with different thread sizes at each end, allowing a direct transition between two sizes inline.
All fittings are available in brass as standard, with steel options across selected sizes. Thread forms cover BSP and metric.
Frequently Asked Questions
What is a hex nipple?
A hex nipple is a short externally-threaded pipe fitting with a hexagonal section in the middle that allows a spanner to grip it. It is used to connect two female-threaded fittings and is particularly useful in confined spaces where a longer fitting would not fit.
What does a reducing socket do?
A reducing socket has two different female thread sizes — one at each end — allowing you to connect a larger-diameter male thread to a smaller one. They are the straightforward solution when port or fitting sizes don't match along a run of pipework.
What materials are your nipples and sockets available in?
Brass is standard and suits most hydraulic, pneumatic and general pipework applications. Steel options are available across selected sizes for higher-pressure or structural applications.
Do you deliver pipe fittings near me?
Yes. We deliver across England and Wales with free delivery on orders over £200. Individual fittings are fine — there are no minimum order quantities.
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