Their small size makes these miniature fittings a good choice for cramped, confined spaces.

Connect these fittings to Schedule 40 plastic pipe—they are the industry standard for residential and commercial low-pressure plumbing and water supply applications. They are plastic for good corrosion resistance.

Aluminum fittings have good corrosion resistance, but are lighter in weight than brass.

Minimize leaks in your line—these fittings have a single barb that creates a smooth clamping surface for extra-tight connections.

Made of stainless steel, these couplings stand up to wet environments.

Made of brass, these fittings have good corrosion resistance.

Change inch threads to metric with these adapters, or swap metric threads for inch. An external hex lets you tighten or loosen them with a wrench.

One side inch, one side metric, and a hex in the middle—these handy fasteners connect two female-threaded parts, such as coupling nuts, adapting from inch threads to metric. Tighten with a standard wrench.

Adapt threaded rods from inch to metric. These adapters connect two male-threaded fasteners, so you can change the gender of a mating part or increase or decrease its thread size. The hex-shaped body fits into the head of a standard wrench.

The strongest key-locking inserts we offer, these inserts are made to stringent military specifications.

These inserts are made to stringent military specifications.

Forming the strongest hold of any of our threaded inserts, these inserts have a distorted internal thread to lock screws into place and keys that drive into surrounding material to prevent slipping and rotating.

Made of 18-8 stainless steel, these inserts have better corrosion resistance than black-phosphate steel.

These assortments include various sizes of thread-locking inserts.

Weld these nuts to stainless steel surfaces.

These nuts can be used in channels and tight spaces where round-base weld nuts won't fit.

Weld these nuts to flat and uneven uncoated steel surfaces for a strong permanent hold.

Square weld nuts have more weld points than hex weld nuts for a stronger hold. Use them on flat surfaces.

Use these tube-end weld nuts with left-hand threaded fasteners.