A straight fitting that connects a 1/4″ MNPT threaded port to 3/8″ OD quick-connect tubing. Cross-size adapter, straight design. PTFE tape on thread side; push-fit tube side. Sold as a 2-pack.

What it does

This straight adapter connects a 1/4″ MNPT threaded port to 3/8″ OD tubing in a straight line. Use where you need a direct, no-angle connection between a 1/4″ threaded component and 3/8″ tubing.

The straight version of the 1/4″ × 3/8″ elbow — same cross-size adaptation, without the 90° turn. Choose this when the tubing path runs straight from the port.

Key benefits

• ✓1/4″ MNPT × 3/8″ QC — cross-size thread-to-tube
• ✓Straight design — no angle change, minimal restriction
• ✓PTFE tape on threads; push-fit tube side
• ✓2-pack with quantity discounts
• ✓Works with inline filters, RO housings & water filtration
• ✓Durable, food-grade construction

Specifications

Compatibility

Often used with

Good to know before you buy

• Wrap PTFE tape on threaded end.
• Push 3/8″ tubing fully in.
• Check for leaks before pressurizing.