Change thread sizes or types, such as fine to coarse threads, on parts without changing gender. These adapters can also be used as standoffs to position components in assemblies and to create space between parts. They have an external hex, so you can tighten them with a wrench.

Black oxide steel adapters have a finish that matches the aesthetics of your system and won’t chip or rub off. They resist rust better than plain steel in indoor and dry environments. However, they will corrode outdoors. Zinc-plated steel adapters are best for mostly dry environments. The zinc plating resists rust until it wears away.

Brass adapters resist corrosion in damp environments but will tarnish if exposed to salt or chemicals in the air or water.

At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.

18-8 stainless steel adapters resist corrosion in wet environments but will corrode when exposed to salt water and chemicals. They may be mildly magnetic. 316 stainless steel adapters are for use in wet environments and have the best corrosion resistance. Unlike 18-8 stainless steel adapters, they resist corrosion caused by salt water and chemicals. They may be mildly magnetic.

Adapters that meet ASTM specifications are made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness. Adapters that meet NAS standards are made to specific dimensions and are finished with an extra layer of rust protection. Aluminum adapters that meet NAS standards have a yellow-chromate plating, and stainless steel adapters have been passivated.

For technical drawings and 3-D models, click on a part number.