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Small square-head pipe plug with tapered male threads, dull grey iron finish

Value Brand

Value Brand Square Head Plug 1/4" MNPT Malleable 150 541

SKU CH-3BD7-NJVQF

A 1/4" male NPT square head plug made from malleable iron rated for 150 class service between -20 and 366 degrees F

  • Malleable iron construction withstands 150 psi pressure rating
  • Male NPT threads seal reliably in piping systems
  • Operates from -20 to 366 degrees Fahrenheit
  • Square head design enables easy wrench installation
  • Complies with California Proposition 65 chemical disclosure requirements

Square Head Plug 1/4" MNPT

This malleable iron square head plug fits a 1/4 inch nominal pipe size with male NPT threads. It is rated for Class 150 service and suits general plumbing or pneumatic installations.

Cored construction and temperature range

The plug uses a cored construction and operates from -20 degrees to 366 degrees F. No pre-applied thread sealant or seal is included, so the installer must apply a compatible sealant during assembly.

Class 150 pressure limit

The Class 150 rating defines the maximum pressure the fitting can handle at the stated temperature extremes. Exceeding this limit risks leakage or failure, so the system design must stay within the rated envelope.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $0.93
Cheaper than about 98% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

What pressure rating does the 1/4" Male NPT thread support?

The malleable iron plug is rated Class 150 for the 1/4" Male NPT connection.

What are the physical dimensions and material for fitting this plug?

It is a 1/4" nominal pipe size square head plug made from malleable iron.

How do I install the plug correctly since it has no pre-applied sealant?

Apply thread sealant or tape to the Male NPT threads before tightening the square head with a wrench.

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