NPT Male Countersunk Plug

Flush-fitting internal-hex NPT plugs for manifolds and valve bodies.

Ways to buy:

• Off the shelf – pick your size from the dropdown below and it’s on its way.
• Need the matching cap? See our NPT Female Cap listing.
• Blanking a whole machine? The made-up kits are better value – see the button below.
• Need a size you can’t see? Call us – if it exists, we can get it.

Pick your size

What is in the box

One plug per unit, priced each.

Specifications

How to choose

• A plug fills a female port or fitting; a cap covers a male end. Male thread showing = you need a cap; open hole = you need a plug.
• Measure the thread outside diameter and match it to the size column – the dash number in brackets is the thread size in 1/16ths of an inch.
• Not sure which thread standard you have? Grab the thread identification chart below or call us with a photo.

Technicians Advice

Same taper rules as any NPT joint – sealant on, first two threads bare. The internal hex lets you over-torque without noticing, and NPT wedges harder per degree of turn than BSPT: snug, quarter turn, stop.

Complete your setup

NPT Female CapUniversal Hydraulic Leak KitThread Identification Chart

Buying in bulk or fitting out a fleet? Call us for trade pricing.

Need help choosing? Call 1300 146 737 or email sales@mhfgc.com.au – real technicians, real answers.