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Steel pipe nipple, black finish, threaded ends, 3 inch length

Value Brand

Value Brand Pipe Nipple Steel 3/8" NPT 3" 5P637

SKU CH-J704-Y4TVE

Steel pipe nipple with 3/8 inch NPT threads, Schedule 40 rating, and 300 psi pressure capacity for air, gas, oil, and non-potable water lines

  • Schedule 40 steel handles 300 psi at 150 °F
  • Electric resistance weld gives consistent wall strength
  • Male NPT threads connect air, gas, oil or non-potable water lines
  • Black coating resists corrosion in industrial environments
  • 3/8 in nominal size fits standard Schedule 40 piping systems

Application Scope

This Zoro Select steel pipe nipple handles air, gases, non-potable water and oils in Schedule 40 systems. The welded construction carries a maximum operating pressure of 300 psi at 150 degrees F and a steam rating of 150 psi at 350 degrees F. Male NPT threads on both ends suit standard plumbing and industrial connections.

Upgrade Path

It replaces a damaged or corroded nipple of the same 3/8 inch nominal size and Schedule 40 rating. The jump is worth it when the existing fitting leaks, shows thread wear or cannot meet the 300 psi service pressure. The black coating and electric resistance weld restore the joint without changing pipe dimensions.

Fitment Limits

The 3 inch overall length and 43/64 inch outside diameter suit tight runs where a standard coupling adds too much length. Builders needing a longer reach, a different nominal diameter or a socket-weld end should look elsewhere. The product carries a California Proposition 65 warning for cancer and reproductive harm.

Highlights

  • Schedule 40 steel handles 300 psi at 150 °F
  • Electric resistance weld gives consistent wall strength
  • Male NPT threads connect air, gas, oil or non-potable water lines
  • Black coating resists corrosion in industrial environments
  • 3/8 in nominal size fits standard Schedule 40 piping systems

Specifications

BrandZORO SELECT

Questions about this item

What thread size and length do I need to match this 3/8 inch NPT steel nipple?

It has 3/8 inch NPT male threads on both ends and an overall length of 3 inches, with a 43/64 inch outside diameter for Schedule 40 compatibility.

How do I install this nipple without damaging the threads?

Apply thread sealant or tape to the male NPT threads, hand-tighten into the female fitting, then finish with a wrench — over-tightening cracks the female port.

When should I replace this nipple in a 300 psi air or oil system?

Replace if you see corrosion, thread deformation, or leaks at the welded seam; the steel body is rated for 300 psi at 150 °F and 150 psi steam at 350 °F.

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