Brass Coupling Nuts | McMaster-Carr

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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890 Products

Fastening and Joining

Coupling Nuts

Connect and extend threaded rods

43 products

Thread Adapters

Join threads of a different type, size, and gender

23 products

Standoffs

Separate, position, or connect components in assemblies

550 products

Fluid Handling

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

144 products

Tube Fitting Sleeve and Nut Kits

Everything you need to create a tight seal between a metal tube and a Yor-Lok fitting

15 products

Hose Fitting Nuts

Connect fittings and compressed-gas nipples to pressure regulators and torches

55 products

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

31 products

Facility and Grounds Maintenance

Sink Drain Fittings

Connect tailpieces, traps, and extension tubing to drains

21 products

Electrical Power, Networking, and Controlling

Conduit Locknuts

Secure threaded conduit fittings to knockouts in outlet boxes or enclosures

8 products