Merchant Steel Fittings
Our Merchant Steel Fittings are built for dependable performance in a wide range of plumbing, gas, water, steam, and light industrial applications. Manufactured from high-quality steel, these fittings are designed for low- to medium-pressure systems, offering strength, reliability, and long service life.
This category includes a complete selection of square head plugs, hex head plugs, bushings, couplings, and caps, all precision-machined for consistent threading and leak-resistant connections. The variety of styles and sizes makes merchant steel fittings a versatile choice for both commercial contractors and maintenance professionals.
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Merchant Steel Full Couplings
SMP
$1.30 - $147.85Standard Merchant Steel Full Coupling Merchant Coupling dimensions and materials conform to ASTM A865 Merchant Coupling threads conform to ASME B1.20.1 Standard Couplings from 1/8” to 1-1/2” are NPSC (Straight Threads), 2” and larger...$1.30 - $147.85 -
Merchant Steel Half Couplings
SMP
$1.25 - $99.02Standard Merchant Steel Half Coupling Merchant Coupling dimensions and materials conform to ASTM A865 Merchant Coupling threads conform to ASME B1.20.1 Standard Couplings from 1/8” to 2” are NPSC (Straight Threads), 2-1/2” and larger...$1.25 - $99.02 -
Merchant Steel Threaded Black Half Couplings
ASC
$0.85 - $68.18Merchant Steel Threaded Black Half Couplings Merchant coupling dimensions and materials conform to ASTM A865 Merchant coupling threads conform to ASME B1.20.1 Merchant couplings from 1/8” to 2” are NPSC (straight threads) Merchant couplings...$0.85 - $68.18 -
Merchant Steel Square Head Plugs
SMP
$0.47 - $3.18Standard Merchant Steel Square Head Plug The Merchant Steel Square Head Plugs are engineered to meet the highest standards in plumbing and industrial applications. Crafted from durable merchant steel, these plugs exhibit exceptional strength and...$0.47 - $3.18 -
Black Hex Socket Plug
Billco
$0.12 - $9.06Black Hex Socket Plug Black Hex Socket Plugs are designed for sealing threaded pipe ends in low- to medium-pressure piping systems. Made from durable black steel, these plugs feature a recessed hex socket head that allows for easy installation and...$0.12 - $9.06 -
Merchant Steel Half Coupling
Charman Inc.
$0.60 - $3.50Standard Merchant Steel Half Couplings Merchant Coupling dimensions and materials conform to ASTM A865 Merchant Coupling threads conform to ASME B1.20.1 Standard Couplings from 1/8” to 2” are NPSC (Straight Threads) API Couplings dimensions...$0.60 - $3.50 -
Merchant Steel Hex Bushings
SMP
$1.22 - $6.60Standard Merchant Steel Hex Bushings Merchant Steel Hex Bushings are engineered for reliability and versatility in a range of industrial applications. Crafted from high-quality merchant steel, these bushings meet the stringent standards outlined by ASME...$1.22 - $6.60 -
Merchant Steel Hex Countersunk Plugs
SMP
$0.60 - $15.00Standard Merchant Steel Hex Countersunk Plug The Merchant Steel Hex Countersunk Plugs are expertly designed to provide a reliable and robust solution for various pipelining needs. These high-quality plugs conform to the ASME B16.14 standards, ensuring...$0.60 - $15.00 -
Galvanized Merchant Steel Square Head Plugs
Billco
$0.15 - $33.85Galvanized Standard Merchant Steel Square Head Plug Billco Corporation Galvanized Merchant Steel Square Head Plugs are manufactured in the USA from high-quality domestic steel, ensuring strength, durability, and consistent performance. These plugs are...$0.15 - $33.85 -
Merchant Steel Square Head Plug
Billco
$0.14 - $28.26Standard Merchant Steel Square Head Plug Merchant Steel Square Head Plugs are designed to provide a secure closure for threaded pipe ends in low- to medium-pressure piping systems. Made from durable merchant steel, these plugs are widely used in...$0.14 - $28.26 -
Galvanized Hex Socket Plug
Billco
$0.13 - $10.77Galvanized Hex Socket Plug Galvanized Hex Socket Plugs are manufactured from durable steel with a protective galvanized coating for strength and corrosion resistance. Designed to seal threaded pipe ends in plumbing, water, gas, steam, and industrial...$0.13 - $10.77 -
Black Square Socket Plug
Billco
$0.12 - $9.06Black Square Socket Plug Black Square Socket Plugs are designed to seal the ends of threaded pipe systems with a durable and reliable closure. Made from strong black steel, these plugs feature a recessed square socket head that allows for easy...$0.12 - $9.06 -
Black Steel Full Pipe Couplings
Teton
$0.98 - $107.84Black Steel Full Pipe Couplings Merchant steel full couplings are robust, ungalvanized carbon steel pipe fittings designed for joining two threaded Schedule 40 steel pipes in low-pressure applications, such as water, oil, or gas systems. Fully threaded...$0.98 - $107.84 -
Black Hex Head Plug (Solid)
Billco
$0.17 - $74.11Black Hex Head Plug (Solid) Black Hex Head Plugs (Solid) are designed to securely seal the ends of threaded pipe systems, providing a dependable closure in low- to medium-pressure applications. Manufactured from durable black steel, these plugs are...$0.17 - $74.11 -
Galvanized Square Socket Plug
Billco
$0.13 - $10.77Galvanized Square Socket Plug Galvanized Square Socket Plugs are manufactured from durable steel with a protective galvanized finish for enhanced corrosion resistance. Designed to securely seal the ends of threaded pipe systems, these plugs feature a...$0.13 - $10.77 -
Black Steel Hex Bushings
Billco
$0.38 - $53.38Black Steel Hex Bushings Black Steel Hex Bushings are designed to join pipes of different sizes by reducing the size of a threaded pipe fitting. Manufactured from durable black steel, these bushings provide a secure, leak-resistant connection in low- to...$0.38 - $53.38 -
Merchant Steel Threaded Black Full Couplings
ASC
$0.90 - $101.82Merchant Steel Threaded Black Full Couplings Merchant coupling dimensions and materials conform to ASTM A865 Merchant coupling threads conform to ASME B1.20.1 Merchant couplings from 1/8” to 2” are NPSC (straight threads) Merchant couplings...$0.90 - $101.82 -
Galvanized Steel Hex Caps
Billco
$0.48 - $19.20Galvanized Steel Hex Caps Galvanized Steel Hex Caps are used to securely close the ends of threaded pipe systems, offering durability and corrosion resistance. Made from strong steel with a protective galvanized coating, these fittings are ideal for...$0.48 - $19.20 -
1/8" Black Slotted Plug
Billco
$0.151/8" Black Slotted Plug The 1/8" Black Slotted Plug is designed to close the ends of threaded pipe systems, providing a secure and reliable seal. Made from durable black steel, this plug features a slotted head design that allows for easy installation...$0.15 -
Galvanized Hex Head Plug (Solid)
Billco
$0.20 - $79.52Galvanized Hex Head Plug (Solid) Galvanized Hex Head Plugs (Solid) are designed to seal the ends of threaded pipe systems with strength and corrosion resistance. Manufactured from durable steel and finished with a protective galvanized coating, these...$0.20 - $79.52 -
Galvanized Steel Full Pipe Couplings
Teton
$1.17 - $32.23Galvanized Steel Full Pipe Couplings Galvanized merchant steel full couplings are durable, zinc-coated carbon steel pipe fittings designed to connect two threaded Schedule 40 steel pipes in low-pressure systems, such as water, gas, or drainage...$1.17 - $32.23 -
Black Steel Hex Caps
Billco
$0.42 - $16.27Black Steel Hex Caps Black Steel Hex Caps are designed to close the ends of threaded pipe systems, providing a secure and durable seal. Manufactured from high-quality black steel, these fittings are widely used in plumbing, gas, water, steam, and...$0.42 - $16.27 -
Black Steel Half Pipe Couplings
Teton
$0.93 - $32.98Merchant Steel Black Half Pipe Couplings Merchant steel black half pipe couplings are short pipe fittings made from ungalvanized carbon steel, often sandblasted or oiled to enhance corrosion resistance. They are threaded on one end to connect to a...$0.93 - $32.98 -
Galvanized Magnetic Steel Square Head Plugs
Billco
$2.17 - $15.25Galvanized Magnetic Steel Square Head Plugs Galvanized Magnetic Steel Square Head Plugs are built for strength and corrosion resistance, making them ideal for sealing threaded pipe ends in plumbing, waterworks, gas, and industrial systems. The magnetic...$2.17 - $15.25