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Black steel pipe nipple, threaded both ends, 6 inches long

Value Brand

Value Brand 1/4" MNPT x MNPT Black Pipe Nipple Schedule 40 6 in

SKU CH-Z4K8-K2S9R

Black steel pipe nipple with 1/4 inch male NPT threads on both ends for air, gas, oil and non-potable water lines

  • Male NPT threads connect pipe sections directly
  • Schedule 40 steel wall handles 300 psi at 150 °F
  • Electric resistance weld gives consistent joint strength
  • Black coating resists corrosion on air, gas and oil lines
  • 6 inch overall length suits tight plumbing runs

ZORO SELECT 1/4" MNPT Black Pipe Nipple

The ZORO SELECT 5P629 is a 1/4 inch nominal pipe size Schedule 40 steel nipple with male NPT threads on both ends. It measures 6 inches overall length and is finished in black coating for air, gas, non-potable water and oil applications.

Verify thread size and pressure rating before

Confirm your existing piping uses 1/4 inch NPT male connections and requires Schedule 40 wall thickness. The nipple is rated for 300 psi at 150 degrees F and 150 psi steam at 350 degrees F. California Proposition 65 warnings apply for cancer and reproductive harm.

Welded steel construction fits Schedule 40 systems

Electric resistance welded steel provides a permanent threaded connection between two female NPT fittings. The 17/32 inch outside diameter matches standard Schedule 40 dimensions. It frees up the need for separate couplings when joining two female ports in a compatible piping network.

Highlights

  • Male NPT threads connect pipe sections directly
  • Schedule 40 steel wall handles 300 psi at 150 °F
  • Electric resistance weld gives consistent joint strength
  • Black coating resists corrosion on air, gas and oil lines
  • 6 inch overall length suits tight plumbing runs

Specifications

BrandZORO SELECT

Questions about this item

Does the 1/4 in MNPT x MNPT black pipe nipple come with any gaskets or sealant in the box?

The nipple is supplied as a single steel fitting with male threads on both ends; thread sealant or tape must be purchased separately.

How do I decide between the 6 in overall length and a shorter nipple for my Schedule 40 system?

Choose the 6 in length when the pipe run requires that exact centre-to-centre distance; shorter nipples are used for tighter spacing.

What does the 300 psi @ 150 Degrees F rating mean when the nipple is installed in a compressed-air line?

It indicates the maximum continuous working pressure the welded steel nipple can safely handle at that temperature.

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