Industrial M style Air Compressor Quick Connect Coupler 3/8" NPT Female Steel

Steel Industrial M Style Air Compressor Quick Coupler 

3/8" Female NPT Threads

This steel industrial-style quick coupler is built tough for heavy-duty air applications, featuring 3/8" female NPT threads (note: 3/8" NPT measures approximately 5/8" in  diameter). Designed to fit Milton Type M-series 1/4" body plugs, this is the most common and widely used coupler style in the market.

Constructed from hardened steel, this coupler is ideal for high-wear environments where durability matters. Unlike brass, steel resists marring and holds up better under frequent connecting and disconnecting. This model also features 6 internal ball bearings for a more secure, tighter grip on the plug—helping extend the service life of the coupler under demanding use.

Features:

• Standard 3/8" Female NPT Thread (note: 3/8" NPT measures approximately 5/8" in  diameter)

• Industrial Style / Type M-Series compatible

• Made from durable hardened steel for superior wear resistance

• 6-ball bearing design for a stronger, more secure connection

• Ideal for high-use, high-impact air tool setups

• Compatible with standard industrial M style 1/4" body plugs (see reference photo for verification)

Compatibility Note: Please review the attached photo of a compatible plug to confirm the style matches your existing setup. This is the most widely used air coupler style in the market, making it a reliable choice for your system.