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Home Plumbing Rough Plumbing Supplies Pipe Fittings Black Pipe Fittings Black Crosses 521-002 3/8IN BLACK CROSS

521-002 3/8IN BLACK CROSS

PART 683658
SUPPLIER B & K LLC
SUPPLIER PART # 521-002
RANK D
SHELF PACK 45
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About this item

The B&K 521-002 is a 3/8-inch black iron cross fitting from the ProLine Series, designed to provide a secure and durable four-way connection in piping systems. This fitting is ideal for applications where two piping systems intersect and require a robust, leak-resistant junction. Constructed from 150-lb class malleable iron, this cross is engineered for strength and long-term performance in demanding environments.

The black finish offers corrosion resistance in non-potable systems, while the female iron pipe (FIP) threaded ends ensure compatibility with standard pipe fittings. This fitting is not intended for potable water use but is well-suited for a wide range of industrial and mechanical applications.

Key Features:

  • Material: Malleable iron for strength and durability
  • Finish: Black coating for corrosion resistance in non-potable systems
  • Connection Type: Four 3/8" FIP (Female Iron Pipe) threaded ends
  • Design: Cross fitting for intersecting pipe systems
  • Thread Standard: ANSI/ASME B1.20.1 compliant
  • Pressure Rating:
    • Working Pressure: 232 PSI
    • Maximum Pressure: 300 PSI
  • Temperature Rating:
    • Minimum: -20°F
    • Working: 77°F
    • Maximum: 347°F
  • Dimensions:
    • Length: 1.87 in
    • Width: 1.87 in
    • Height: 1.00 in
    • Weight: 0.2573 lbs
  • Seal Integrity: Malleable iron provides a tight seal due to its relative softness
  • Compliance: Meets ASTM and ASME standards (ASME B16.3)
  • Warranty: 1-year limited warranty

Applications:

  • Fuel Systems: Suitable for LP gas and natural gas distribution
  • Industrial Piping: Used in systems transporting lubricants, oils, greases, and diesel
  • Steam Lines: Compatible with low-pressure steam applications
  • Compressed Air Systems: Provides reliable connections in pneumatic systems
  • DIY & Fabrication Projects: Ideal for custom pipe furniture, shelving, and structural builds

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Color Black
Nominal Size 3/8 in
Brand B&K
Nominal Size 3/8 in
Material Steel
Finish Black
Connection Type Female Threaded
Thread Type NPT
Fitting Type Cross
Application Water, Gas, Oil, and Air Lines
Standards ASTM A53, ANSI B1.20.1
Brand Name Southland
Series 521
Weight (lb.) 0.3
UPC Code 032888371309
Shelf Pack 45
Minimum Order Qty 1
Supplier Name B & K LLC
Supplier Short Name B & K /Mue
Supplier Address 1 2600 Elm Hurst Road
Supplier City Elk Grove Villa
Supplier State IL
Supplier Zip 60007
Country US
Supplier Email brett.merrick@colemanrussell.com
Supplier Url www.muellerindustries.com
Buyer Name Michael Heck
Supplier Phone (800) 782-2385
Supplier Fax (800) 421-7724
Our Customer Id 48813001
Return Policy Return to Wallace
Product Lines Valves, Faucets, Pipe Fittings
Rep Name Brett Merrick
Rep Address Rose Maria Lighthal l@ Factory
Rep Phone (800) 777-0270
Rep Cell (931) 510-7989
Rep Fax (205) 836-6528
Rep Email brett.merrick@colemanrussell.com
Rep Agency Coleman-Russell