

Brass Stem Adaptors
John Guest push-fit stem adaptor designed to connect plastic tubing to threaded ports in compressed air and pneumatic systems. Provides a fast, secure transition between push-in tube and BSP threaded connections without tools.
• Genuine UK Stock
• Next-Day Delivery Available
• Secure Checkout
• Prices Exclude VAT until Checkout
• Delivery from £7.50 + VAT
• FOC carriage on orders over £100 + VAT
Common John Guest part number references include MM051504N, MM052206N, MM501514N, MM502216N and MM052818N (size dependent).
Product Details
John Guest stem adaptors are engineered to provide a reliable connection between push-fit tubing and threaded components such as valves, cylinders, regulators and manifolds. The push-fit end allows quick tube installation and removal, while the threaded stem ensures a secure connection into BSP ports.
Commonly used in compressed air distribution, pneumatic control circuits, automation equipment and OEM machinery, stem adaptors help create clean, compact installations without the need for additional fittings. Their robust construction offers excellent resistance to vibration and pressure when installed correctly.
Compatible with approved plastic tubing, John Guest stem adaptors are widely specified across manufacturing, engineering, packaging, food production and workshop environments where dependable pneumatic connections are essential.
• Genuine UK Stock
• Next-Day Delivery Available
• Secure Checkout
• Prices Exclude VAT until Checkout
• Delivery from £7.50 + VAT
• FOC carriage on orders over £100 + VAT

