SPEEDAIRE Quick Connect Hose Coupling: 3/8 in Body Size, 3/8 in Hose Fitting Size
The SPEEDAIRE Quick Connect Hose Coupling (MPN 30E661) is an industrial interchange steel quick-connect air coupling plug with a 3/8 in body size and a 3/8 in hose fitting size. It features a male MNPT connection…
SKU 3G-OTH-457056
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Product Description
The SPEEDAIRE Quick Connect Hose Coupling (MPN 30E661) is an industrial interchange steel quick-connect air coupling plug with a 3/8 in body size and a 3/8 in hose fitting size. It features a male MNPT connection with a 3/8"-18 thread size, designed for pneumatic systems requiring secure, quick-disconnect air-line connections.
Frequently Asked Questions
What is the SPEEDAIRE 30E661 quick connect hose coupling used for?
The SPEEDAIRE 30E661 is an industrial interchange steel quick-connect air coupling plug used in pneumatic systems. It provides a secure, quick-disconnect connection for air-line applications, allowing fast tool changes and reducing downtime in manufacturing, assembly, and maintenance environments.
What are the specifications of the SPEEDAIRE 30E661 coupling?
The SPEEDAIRE 30E661 has a 3/8 in body size and a 3/8 in hose fitting size. It features a male MNPT connection with a 3/8"-18 thread size. The coupling is made of steel for durability in industrial pneumatic systems.
Where to buy the SPEEDAIRE 30E661 quick connect coupling worldwide?
3G Electric supplies the SPEEDAIRE 30E661 quick connect hose coupling to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this pneumatic coupling.
How to install the SPEEDAIRE 30E661 male coupling?
To install the SPEEDAIRE 30E661, apply thread sealant to the male MNPT threads and hand-tighten into the female port. Use a wrench for final snugging, but avoid overtightening to prevent damage. Ensure the air supply is off before connection.
Used in
Common applications for SPEEDAIRESPEEDAIRE Products
3G Electric supplies SPEEDAIRE industrial interchange steel quick-connect air coupling plugs. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









