UNC Couplings | McMaster-Carr

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Thread Size

Material

Stainless Steel

Length

Nut Type

With Sight Hole

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Threading

Partially Threaded

Threaded on Both Ends

Finish

Hot-Dipped Galvanized

Zinc Flake Coated

Zinc Yellow-Chromate Plated

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Fastener Strength Grade/Class

System of Measurement

Thread Spacing

Gender

Fastener Strength Rating

Coupling Nut Profile

Performance

Corrosion Resistant

Thread Length

Hex Length

OD

Shape

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DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

RoHS

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.)