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Hex bushing, malleable iron, 3/4 inch by 3/8 inch NPT threads

Value Brand

Value Brand 5P514 Hex Bushing 3/4" x 3/8" FNPT x MNPT

SKU CH-MGHC-85AQR

A malleable iron hex bushing with 3/4 inch and 3/8 inch threaded ends for pipe connections

  • Malleable iron construction rated for Class 150 service
  • 3/4 inch FNPT to 3/8 inch MNPT straight thread adapter
  • Zoro Select brand manufactured to standard pipe fitting dimensions
  • Female NPT threads on both ends accept male pipe connections
  • Hex profile allows secure installation with standard wrench tools

3/4" x 3/8" Hex Bushing

This malleable iron hex bushing connects a 3/4 inch female NPT port to a 3/8 inch male NPT thread. It is suited for plumbing repairs and industrial piping assemblies where a straight reduction is required. The Class 150 rating indicates its pressure class for standard water, oil, or air lines. Installers use a wrench on the hex flats to tighten the joint.

Class 150 Threaded Limits

The fitting is rated for Class 150 service, which defines the maximum non-shock working pressure at ambient temperature for malleable iron. Thread engagement follows NPT standards, so sealing requires tape or compound on the male threads. The straight design does not change flow direction, but the reduced bore creates a restriction at the 3/8 inch end. It is not intended for compression or flare connections.

Malleable Iron Material Constraint

The body is cast from malleable iron, which provides good tensile strength and ductility for threaded joints. This material is not suitable for potable water systems unless specifically certified for that use. It should not be used in highly corrosive environments or with fluids that attack iron without proper protection. Buyers needing brass, stainless steel, or plastic construction must select a different fitting.

Highlights

  • Malleable iron construction rated for Class 150 service
  • 3/4 inch FNPT to 3/8 inch MNPT straight thread adapter
  • Zoro Select brand manufactured to standard pipe fitting dimensions
  • Female NPT threads on both ends accept male pipe connections
  • Hex profile allows secure installation with standard wrench tools

Specifications

BrandZORO SELECT

Questions about this item

Should I choose a different bushing size or stick with the 3/4" x 3/8" FNPT x MNPT configuration?

This bushing is a straight malleable iron Class 150 fitting with a 3/4 inch female threaded end and a 3/8 inch female threaded end. Select it when your piping requires exactly that reduction.

What does the Class 150 rating mean once the bushing is installed in my piping system?

Class 150 indicates the pressure rating for this malleable iron fitting. It is designed for standard low-pressure plumbing applications such as water, air, or gas lines within that class limit.

How do the FNPT and MNPT thread types on this hex bushing affect what I can connect to it?

The fitting features a 3/4 inch female NPT thread on one side and a 3/8 inch female NPT thread on the other. Both ends accept male NPT threaded pipe or nipples for a sealed connection.

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