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Charlotte area contractor supply store | Fast pickup | Local delivery available | Call 704-835-1086
Charlotte contractor supply store | Fast pickup | Local delivery available | Call 704-835-1086
Black Steel Fittings - Nipples

Black Steel Fittings - Nipples

Complete your gas, fire suppression, or industrial piping system with black steel malleable iron fittings — the standard choice wherever threaded steel pipe connections are required. Built tough for high-pressure and high-temperature applications, black steel fittings are a staple on every commercial and residential gas line rough-in.

What Are Black Steel Fittings?

Black steel fittings are malleable iron threaded fittings with a black oxide finish (no galvanizing). They are designed for use with black steel pipe on natural gas, propane, fire sprinkler, steam, and compressed air systems. The black finish distinguishes them from galvanized fittings, which are not suitable for gas service.

Fitting Types Available

  • Elbows — 90° and 45° in street and standard configurations
  • Tees — straight and reducing tees for branch connections
  • Couplings — standard and reducing for inline connections
  • Nipples — close, short, and long in common sizes
  • Caps & Plugs — for capping open ends and pressure testing
  • Unions — for connections that may need to be broken and remade
  • Bushings — for reducing threaded connections

Common Applications

  • Natural gas and propane distribution lines
  • Fire suppression and sprinkler systems
  • Steam and high-temperature piping
  • Compressed air systems
  • Industrial process piping

Key Specs

  • Material: Malleable iron with black oxide finish
  • Thread standard: NPT (National Pipe Thread)
  • Pressure rated: 150 lb class (standard) — suitable for most gas and steam applications
  • Sizes: 1/4" through 2" (common stock sizes)
  • Not for use with galvanized pipe on gas lines — always use black fittings with black pipe for gas service

Same-day pickup available at AC Construction Depot in Pineville, NC. Serving plumbers, pipefitters, and contractors across the greater Charlotte area. Call us at 704-835-1086 to confirm availability on specific sizes and configurations before your trip.

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$2.26 - $2.26
$2.26
$2.26 - $2.26
$2.26

Black Steel Nipple - 1/2" x 2-1/2"

Black Steel Nipple - 1/2" x 2-1/2" Model: 500844 SKU: ACPI15912363 LID: D9-4

$2.26 - $2.26
$2.26
$2.26 - $2.26
$2.26
$1.69 - $1.69
$1.69
$1.69 - $1.69
$1.69

STZ Black Steel Nipple - 3/4" X 1-1/2"

STZ Industries Black Steel ??Nipple - 3/4" X 1-1/2" Model: 500876 LID:??D9-3

$1.69 - $1.69
$1.69
$1.69 - $1.69
$1.69
$1.99 - $1.99
$1.99
$1.99 - $1.99
$1.99

STZ Industries Black Steel Nipple MPT x MPT - 3/4" x 3"

STZ Industries Black Steel Nipple MPT x MPT - 3/4in x 3in Model: 500879/584-030HN LID: D9-3

$1.99 - $1.99
$1.99
$1.99 - $1.99
$1.99
$1.41 - $1.41
$1.41
$1.41 - $1.41
$1.41

STZ Black Steel Pipe Nipple 3/4" x 2"

STZ Industries Black Steel Pipe Nipple 3/4" x 2" Model: 500877 LID: D9-3

$1.41 - $1.41
$1.41
$1.41 - $1.41
$1.41
$3.99 - $3.99
$3.99
$3.99 - $3.99
$3.99

STZ Black Steel Pipe Nipple 3/4" x 5"

STZ Industries Black Steel Pipe Nipple 3/4" x 5" Model: 500883 LID: D9-3

$3.99 - $3.99
$3.99
$3.99 - $3.99
$3.99
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$2.79 - $2.79
$2.79
$2.79 - $2.79
$2.79

Southland Black Steel Nipple - 3/4" x 1-1/2"

B&K/Mueller Southland Black Steel Nipple - 3/4in x 1-1/2in Model: 584-015HN SKU: ACPI15912462 LID: D9-3

$2.79 - $2.79
$2.79
$2.79 - $2.79
$2.79
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$1.86 - $1.86
$1.86
$1.86 - $1.86
$1.86

STZ Black Steel Pipe Nipple- 3/4" X 2-1/2"

STZ Industries Black Steel Pipe Nipple -3/4in X 2-1/2in Model: 500878 LID: D9-3

$1.86 - $1.86
$1.86
$1.86 - $1.86
$1.86
$1.99 - $1.99
$1.99
$1.99 - $1.99
$1.99

STZ Black Steel Pipe Nipple- 3/4" X 3-1/2"

STZ Industries Black Steel Pipe Nipple -3/4in X 3-1/2in Model: 500880 LID: D9-3

$1.99 - $1.99
$1.99
$1.99 - $1.99
$1.99
$2.49 - $2.49
$2.49
$2.49 - $2.49
$2.49

STZ Black Steel Pipe Nipple- 3/4" x 4-1/2"

STZ Industries Black Steel Pipe Nipple-3/4in x 4-1/2in Model: 500882 LID: D9-3

$2.49 - $2.49
$2.49
$2.49 - $2.49
$2.49
$3.29 - $3.29
$3.29
$3.29 - $3.29
$3.29

STZ Black Steel Pipe Nipple- 3/4" X 4"

STZ Industries Black Steel Pipe Nipple- 3/4" X 4" Model: 500881 LID: G9-3

$3.29 - $3.29
$3.29
$3.29 - $3.29
$3.29
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$19.99 - $19.99
$19.99
$19.99 - $19.99
$19.99

Mueller Schedule 40 Steel Black Pipe Nipple Threaded - 1-1/4" x 60"

Mueller Schedule 40 Steel Black Pipe Nipple Threaded - 1-1/4" x 60" Model: 586-600HC?? SKU: ACPI16101354 LID: E-EC1

$19.99 - $19.99
$19.99
$19.99 - $19.99
$19.99
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$5.76 - $5.76
$5.76
$5.76 - $5.76
$5.76

Southland MPT x MPT Black Iron Steel Nipple - 1-1/2" x 3"

Southland MPT x MPT Black Iron Steel Nipple - 1-1/2" x 3"?? Model: 587-030HN SKU: ACPI15912819 LID: D8-2

$5.76 - $5.76
$5.76
$5.76 - $5.76
$5.76
$3.96 - $3.96
$3.96
$3.96 - $3.96
$3.96

Southland Black Steel Nipple - 1" x 3"

Southland Black Steel Nipple - 1" x 3" Model: 585-030HN SKU: ACPI15912694 LID: D9-2

$3.96 - $3.96
$3.96
$3.96 - $3.96
$3.96
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$2.27 - $2.27
$2.27
$2.27 - $2.27
$2.27

Southland Nipple-Black Steel - 1-1/4" x 2"

Southland Nipple-Black Steel - 1-1/4" x 5"?? Model: 586-050HP/HC?? SKU: ACPI15912777 LID: D9-1

$2.27 - $2.27
$2.27
$2.27 - $2.27
$2.27
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$2.99 - $2.99
$2.99
$2.99 - $2.99
$2.99

STZ Black Steel Pipe Nipple - 1-1/2" X 2"

STZ Industries Black Steel Pipe Nipple - 1-1/2" X 2" Model: 500822 LID: D8-2

$2.99 - $2.99
$2.99
$2.99 - $2.99
$2.99
$1.56 - $1.56
$1.56
$1.56 - $1.56
$1.56

STZ Black Steel Nipple - 1" x 3"

STZ Industries Black Steel Nipple - 1" x 3" Model: 500857 SKU: ACPI15912694 LID: D9-2

$1.56 - $1.56
$1.56
$1.56 - $1.56
$1.56
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$13.99 - $13.99
$13.99
$13.99 - $13.99
$13.99

Mueller Schedule 40 Steel Black Pipe Nipple Threaded - 1-1/4" x 36"

Mueller Schedule 40 Steel Black Pipe Nipple Threaded - 1-1/4" x 36" Model: 586-360HC?? SKU: ACPI16101339 LID: E-EC1

$13.99 - $13.99
$13.99
$13.99 - $13.99
$13.99
Sold out
$2.94 - $2.94
$2.94
$2.94 - $2.94
$2.94

Southland Black Steel Nipple - 1/2" x 3-1/2"

Southland Black Steel Nipple - 1/2" x 3-1/2"?? Model: 583-035HP/HC SKU: ACPI15912389 LID: D9-4

$2.94 - $2.94
$2.94
$2.94 - $2.94
$2.94
Sold out
$3.56 - $3.56
$3.56
$3.56 - $3.56
$3.56

Southland Black Steel Nipple - 1/2" x 4-1/2"

Southland Black Steel Nipple - 1/2" x 4-1/2"?? Model: 583-045HN?? SKU: ACPI15912405 LID: D9-4

$3.56 - $3.56
$3.56
$3.56 - $3.56
$3.56
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$12.57 - $12.57
$12.57
$12.57 - $12.57
$12.57

Southland Nipple Black Steel - 2" x 5"

Southland Nipple Black Steel - 2" x 5"?? Model: 588-050HN?? SKU: ACPI15912884 LID: D8-1

$12.57 - $12.57
$12.57
$12.57 - $12.57
$12.57
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$2.06 - $2.06
$2.06
$2.06 - $2.06
$2.06

Southland Nipple Black Steel - 1/2" x 1/2"

Southland Nipple Black Steel - 1/2" x 1/2" Model: 583-015HN?? SKU: ACPI15912348 LID: D9-4

$2.06 - $2.06
$2.06
$2.06 - $2.06
$2.06
Sold out
$3.76 - $3.76
$3.76
$3.76 - $3.76
$3.76

Southland Black Steel Pipe Nipple - 1/2" x 5"

Southland Black Steel Pipe Nipple - 1/2" x 5" Model: 583-050HN SKU: ACPI15912413 LID: D9-4

$3.76 - $3.76
$3.76
$3.76 - $3.76
$3.76
$3.79 - $3.79
$3.79
$3.79 - $3.79
$3.79

Southland Black Steel Nipple - 3/4" x 3-1/2"

B&K/Mueller Southland Black Steel Nipple - 3/4in x 3-1/2in Model: 584-035HN\156587 SKU: ACPI15912603 LID: D9-3

$3.79 - $3.79
$3.79
$3.79 - $3.79
$3.79
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$3.99 - $3.99
$3.99
$3.99 - $3.99
$3.99

Southland Black Steel Nipple - 3/4" x 4"

Southland Black Steel Nipple - 3/4" x 4"?? Model: 584-040HN SKU: ACPI15912611 LID: D9-3

$3.99 - $3.99
$3.99
$3.99 - $3.99
$3.99
Sold out

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