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Short black steel pipe nipple with threaded ends

Value Brand

Value Brand 3/8" x 4-1/2" Black Pipe Nipple Sch 40

SKU CH-F783-Q2NQ2

Schedule 40 black steel pipe nipple with threaded ends, 4.5 in length, rated 300 psi at 150 °F

  • Schedule 40 rating handles 300 psi at 150°F
  • Electric-resistance weld gives uniform wall strength
  • Black steel construction resists corrosion in water lines
  • Threaded both ends for direct MNPT connections
  • Meets ASTM A-53 Type E and A-733 Grade B standards

3/8" Schedule 40 Black Pipe Nipple

The Zoro Select 5P640 is a 4.5-inch threaded nipple made from black steel to ASTM A-53 Type E and ASTM A-733 Grade B standards. Electric resistance weld construction provides a consistent wall thickness of 5/64 inch and an outside diameter of 43/64 inch. Male NPT threads on both ends allow direct connection to compatible fittings. The fitting carries a maximum pressure rating of 300 psi at 150 degrees Fahrenheit.

Suited for standard water, oil.

Installers working with 3/8-inch nominal pipe size and 300 psi service limits will find this nipple matches the required specifications. Systems demanding higher pressure classes, larger nominal diameters, or different thread standards such as BSPT will require alternative components. The black steel material is not intended for potable water lines requiring galvanised or stainless steel.

Maximum pressure 300 psi at 150 degrees Fahrenheit

This pressure-temperature rating is the primary figure that determines whether the nipple meets the design limits of a specific piping system. Steam service is limited to 150 psi WSP. Verifying the system operating conditions against these values confirms suitability before purchase.

Highlights

  • Schedule 40 rating handles 300 psi at 150°F
  • Electric-resistance weld gives uniform wall strength
  • Black steel construction resists corrosion in water lines
  • Threaded both ends for direct MNPT connections
  • Meets ASTM A-53 Type E and A-733 Grade B standards

Specifications

BrandZORO SELECT

Questions about this item

What does the 4.5 inch length mean for my piping layout?

The overall pipe length is 4.5 inches measured from end to end, giving you a fixed spacer between two female threaded fittings in a straight run.

How does the 300 psi rating hold up when the water is hot?

The maximum pressure is rated at 300 psi at 150 degrees Fahrenheit, so the nipple maintains that pressure limit at typical hot‑water supply temperatures.

What does the MNPT x MNPT thread type cap in practice?

Both ends have male National Pipe Taper threads, so the nipple only connects to female NPT fittings and cannot join directly to another male‑threaded component.

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