UNC Couplings | McMaster-Carr

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System of Measurement

Thread Size

Length

Material

Stainless Steel

Nut Type

With Sight Hole

Width

Threading

Partially Threaded

Threaded on Both Ends

Finish

Hot-Dipped Galvanized

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Thread Direction

Fastener Strength Grade/Class

Gender

Thread Spacing

Coupling Nut Profile

Fastener Strength Rating

Hex Length

Performance

Corrosion Resistant

Thread Length

OD

Hex Size

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Drive Style

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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Compliant with Exemptions

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448 Products

Coupling Nuts

Coupling Nuts

The most commonly used coupling nuts

Left-Hand-Thread Coupling Nuts

Left-Hand-Thread Coupling Nuts

Tighten when turned to the left

Coupling Nuts with Sight Hole

Coupling Nuts with Sight Hole

Confirm that threads are fastened to the right depth

Round Coupling Nuts

Round Coupling Nuts

Fit in tight spots and create a finished appearance

Other Products

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Standoffs

Threaded to separate or connect parts as well as position components in assemblies

Orifice Valves

Restrict the flow of liquids and gases to precisely control rate and pressure

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)