3063 - Miller Weldcraft 3/8 NPT to 1/4 NPT Brass Adapter Fitting

Industrial Grade Brass Adapter for Versatile Connections

The Miller 3063 Weldcraft Fitting is a premium brass adapter designed to facilitate seamless connections between components with differing thread sizes. Specifically engineered to adapt 3/8-inch NPT threads to 1/4-inch NPT threads, this fitting is an essential component for maintenance, repair, and operations (MRO) professionals managing pneumatic, hydraulic, or gas distribution systems. Manufactured from high-quality brass, it offers excellent resistance to corrosion and wear, making it suitable for a wide range of industrial environments where durability is paramount.

In complex industrial setups, finding the right adapter is often the key to completing a system configuration. This fitting features precision-cut threads that ensure a tight, secure engagement, minimizing the risk of leaks which can be costly and dangerous in pressurized systems. Whether you are routing air lines, setting up coolant loops, or configuring gas manifolds, the reliability of your fittings dictates the reliability of your entire system. The Miller 3063 provides the assurance of a genuine OEM part, manufactured to strict tolerances that generic fittings often fail to meet.

This adapter is particularly useful in welding workshops but is versatile enough for general plumbing applications requiring NPT standards. Its robust construction withstands the vibration and thermal fluctuations common in heavy-duty machinery environments. By keeping a stock of these versatile adapters, facility managers and technicians can ensure they are prepared for immediate repairs or system modifications, reducing downtime and maintaining operational efficiency.

Key Benefits:

• Durability: Solid brass construction resists rust and physical damage.


• Precision: Accurate NPT threading ensures compatibility with standard pipe fittings.


• Versatility: Solves connection issues between 3/8" and 1/4" ports effectively.