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Dorman 785073 Brass Pipe Plug Square Head 1/2 In. MNPT

Part of: Dorman Brass Pipe Plug Square Head

Other options in this family: Dorman 785-070D Dorman 785-071D Dorman 785-072D Dorman 785-073D

Manufacturer

Picture for manufacturer Dorman

Part Number

785073
9 reviews
Sale Price

$5.79

1 left at this price

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Usually delivered within 2 days

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Product Details

The Dorman 785073 is a solid brass, square head pipe plug with a 1/2-inch Male National Pipe Thread (MNPT) connection. Engineered as a direct OE-style replacement, this plug matches the original equipment part for thread pitch, head type, and diameter, ensuring a precise and reliable fit.

Constructed from corrosion-resistant brass, this plug is built for long-lasting durability in demanding automotive, marine, and industrial environments. The quality manufacturing process delivers leak-free sealing performance, making it a dependable choice for plugging unused ports in brake lines, engine blocks, oil galleries, coolant passages, and hydraulic systems.

Key Features:

  • Solid brass construction for superior corrosion resistance and long service life
  • Square head design for easy installation and removal with a standard wrench
  • 1/2 in. MNPT (Male National Pipe Taper) thread for a secure, tapered seal
  • OE-matched specifications — correct diameter, thread pitch, and head type
  • Validation tested to ensure proper fit and leak-free function
  • Suitable for automotive, industrial, and commercial applications

The Dorman 785073 brass pipe plug is a straightforward, high-quality solution for sealing open pipe threads in a wide range of systems. Also referenced as 785-073D.

Products specifications

Feature - Benefit 1

Direct replacement for a proper fit every time

Feature - Benefit 2

Thread lock applied for increased locking action and leak prevention (where applicable)

Feature - Benefit 3

Made of high quality steel, brass, or aluminum

Feature - Benefit 4

Dormans Pipe Plugs are designed and constructed to strict engineering quality standards

Head Drive Type

Square

Threaded

Yes

Overall Length (in)

1.014 in

Zinc Coated

No

SAE or Metric

SAE

Heat Hardened

No

Inside Or Outside Thread

Outside

Package Contents

Square Head Pipe Plug

Threads per Inch

15

Thread Diameter

0.84

Material

Brass

Grade

Standard

Finish

Brass

Thread Type

Coarse

Depth

0.625

Color

Brass

Thread Size

1/2 in MNPT

Head Tool Size

0.55

Outer Diameter (in)

0.825 in

Threads per Inch

14

Package Contents

1 Pipe Plug

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Very simple. Would use again.

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