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Hexagonal stainless steel reducing bushing with male and female threaded ends

Smith-Cooper

Smith-Cooper 3/8" x 1/8" MNPT x FNPT SS Hex Reducing Bushing

SKU CH-VT3G-KQEMZ

304 stainless steel hex reducing bushing adapts 3/8 in male NPT to 1/8 in female NPT, rated 2,570 psi at 100°F

  • 304 stainless steel resists corrosion in harsh environments
  • 2,570 psi rating at 100 °F handles high-pressure systems
  • ASME B1.20.1 threads ensure reliable NPT sealing
  • 11/16 in hex allows secure wrench tightening
  • 5/8 in overall length fits compact installations

3/8" x 1/8" NPT Reducing Bushing

This Zoro Select hex reducing bushing adapts a 3/8 in male NPT thread to a 1/8 in female NPT thread. It is machined from 304 stainless steel for corrosion and temperature resistance. The fitting meets ASME B1.20.1 thread standards, ASTM A182 material requirements, and ASME B16.11 dimensional tolerances.

Installers needing a compact step-down in pipe size

Suitable for industrial, commercial, and plumbing systems requiring a high-pressure connection rated up to 2,570 psi at 100°F. Not intended for applications exceeding the listed pressure or temperature limits, or for buyers who need a different thread standard or a larger flow path.

Hex profile allows standard wrench engagement

The 11/16 in across-flats hex and 5/8 in overall length provide access in tight spaces. Apply thread sealant approved for stainless steel and NPT threads to prevent leaks; over-tightening can damage the fitting or the mating component.

Highlights

  • 304 stainless steel resists corrosion in harsh environments
  • 2,570 psi rating at 100 °F handles high-pressure systems
  • ASME B1.20.1 threads ensure reliable NPT sealing
  • 11/16 in hex allows secure wrench tightening
  • 5/8 in overall length fits compact installations

Specifications

BrandZoro Select

Questions about this item

What size wrench fits the 11/16 in hex on this 3/8 in male NPT to 1/8 in female NPT bushing?

A standard 11/16 in open-end or adjustable wrench engages the hex flats for secure tightening without rounding the corners.

Will the 304 stainless steel threads on this 2,570 psi rated bushing gall when mated to older carbon-steel pipe threads?

304 stainless resists galling better than many alloys, but applying an anti-seize compound rated for 100°F service is recommended when joining dissimilar metals.

After installation, how can I verify the ASME B1.20.1 threads on this 5/8 in long bushing are sealing at 2,570 psi?

Pressurise the system to working pressure, then brush leak-detect solution on the joint; no bubbles confirm the NPT taper seal is holding.

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