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Automotive Standard 3/8" Series

Couplers & Connectors That meets the "Diamond Standard."

For almost a century, Diamond-U has provided quality fittings such as couplers, connectors, barbs, and plugs. We offer several types of couplers including our very own Diamond-U Ball-Tite swivel-type coupler that has become an industry standard over time.  We proudly hold a wide range of couplers and connectors applicable for compressed air lines for your specific industrial needs.

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1/4” Connector 3/8” Mpt
Part #: 1043


1/4” Coupler 3/8” Fpt
Part #: 1033


1/4” Coupler 3/8” Barb
Part #: 1035


3/8” Connector 1/4” Mpt
Part #: 1067


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