Midland Industries 28840 Countersunk Hex Plug 1/8 in Bspt

Product Description

The MIDLAND INDUSTRIES 28840 is a countersunk hex plug designed to close off 1/8-inch BSPT (British Standard Pipe Taper) threaded ports in piping systems. Constructed from brass with a nickel-plated finish, this plug provides corrosion resistance while maintaining a secure, leak-free seal in low-pressure fluid and gas lines. The countersunk hex head allows for recessed installation in applications where a flush or near-flush profile is required. With a 1/8-28 thread specification, the plug installs using standard hex tooling and is suited for use by licensed plumbers, HVAC technicians, and pipefitters working on branch port closures or test port caps.

This plug is typically used in residential and light commercial plumbing, HVAC, and pneumatic systems where a BSPT-threaded port requires sealing. Common applications include capping unused ports on manifolds, valve bodies, and pipe fittings. The nickel-plated brass construction makes it appropriate for use in environments where mild corrosion resistance is needed. Its compact size and standard thread form make it a practical stock item for service trucks and shop inventory.

Key Features

• 1/8-inch BSPT connection size with 1/8-28 thread specification for standard metric-based tapered pipe thread fitment
• Countersunk hex head profile allows recessed or flush installation in tight spaces
• Brass base material with nickel-plated finish for corrosion resistance
• Compact dimensions suited for port-closing applications on manifolds, valve bodies, and fittings
• Minimum order quantity of 1, suitable for single-unit service replacements

Compatibility

Designed for use in any system with a 1/8-inch BSPT-threaded port requiring a plug closure, including plumbing manifolds, HVAC valve bodies, and pneumatic fittings with 1/8-28 BSPT thread forms.

Installation Notes

Installation should be performed by a qualified plumber or pipefitter familiar with BSPT thread standards. Depressurize and drain the system before removing or installing any pipe plug. Apply an appropriate thread sealant or PTFE tape compatible with the system media before threading the plug in. Use a properly sized hex key or socket to tighten - do not overtighten brass fittings, as this can crack the fitting body or damage mating threads.