TAILONZ PNEUMATIC 5/16" OD to 3/8" NPT Push-to-Connect Fitting Kit 12pc — Straight & Elbow, 145 psi

TAILONZ 5/16" x 3/8" NPT push-to-connect fitting kit is a 12-piece set of straight and elbow fittings made from copper and durable plastic for quick, tool-free connections to 5/16" tubing and 3/8" NPT threaded ports.

This kit combines lightweight copper and engineered plastic to give a corrosion-resistant, serviceable solution for pneumatic and fluid routing. Each fitting is sized for 5/16" outer-diameter tubing and standard 3/8" NPT threaded ports (note: NPT is a nominal pipe size, not actual bore diameter). With a 145 psi maximum rating and a working temperature range from 32°F to 140°F, these push-in fittings are intended for shop, hobby, or light-industrial pneumatic and low-pressure fluid tasks where fast assembly and reliable seals matter.

How do these push-to-connect fittings speed installation?

Push-to-connect design eliminates threading or clamping for the tubing side: simply insert the tube until it seats and the internal collet locks it in place. This reduces assembly time and makes repairs or rerouting fast without special tools.

• Instant tube locking with a secure collet grip
• Straight and 90° elbow shapes for direct routing or directional changes
• Tool-free release for quick disassembly and reuse

What materials and performance limits should I expect?

Fittings combine copper metal components with engineered plastic bodies to balance corrosion resistance and impact strength. They are rated to a maximum working pressure of 145 psi and operate between 32°F and 140°F — suitable for many compressed-air and low-pressure fluid systems but not intended for high-temperature or high-pressure hydraulic service.

• Copper and plastic construction for durability and light corrosion resistance
• 145 psi maximum working pressure listed by the manufacturer
• Compatible with PU, PA, PE, and PVC tubing materials

Which tubing and thread types are compatible with this kit?

The fittings accept 5/16" outside-diameter tubing made from polyurethane (PU), polyamide (PA), polyethylene (PE), or PVC. The threaded connections are 3/8" NPT — a tapered nominal pipe-thread standard — so ensure mating ports are NPT or use appropriate adapters for parallel threads.

• 5/16" OD tubing: PU, PA, PE, PVC compatible
• 3/8" NPT threads: tapered nominal pipe thread standard
• Use pipe sealant or tape on threads when required for leak-free joints

How should I maintain and troubleshoot these fittings?

Routine inspection and careful assembly are the best ways to maintain leak-free performance. Check seals and tubing ends for dirt, nicks, and proper insertion depth; replace damaged tubing or worn fittings to prevent air loss.

• Cut tubing squarely and remove burrs before insertion
• Clean threads and use sealant when connecting to mating NPT ports
• Release and reseat tubing if a leak develops, or replace the fitting if damaged

Who is this kit for? Installers, hobbyists, and small-shop technicians who need a compact set of reliable push-in connectors will find the TAILONZ 12-piece kit practical. It’s designed for compressed-air lines, pneumatic tools, small automation projects, beverage or low-pressure fluid routing, and general-purpose plumbing of PU/PA/PE/PVC tubing where quick changes and tool-free operation save time. If your application requires higher temperatures or hydraulic pressures, select fittings rated to those specific conditions.