5/8"-18 Couplings | McMaster-Carr

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System of Measurement

Thread Size

Gender

Material

Stainless Steel

Fitting Type

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Shape

Fitting Connection

Push to Connect

Spec Image

For Use With

Hydraulic Fluid

Nut Type

Pipe Size

Tube OD

Connects To

Flare Style

Internal Flared

Threading

Partially Threaded

Thread Direction

Tube Material

Polyurethane Rubber

Fastener Strength Grade/Class

Hose ID

CGA Number

Finish

Aluminum Plated

Export Control Classification Number (ECCN)

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

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122 Products

Fluid Handling

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Hose Fitting Nuts

Hose Fitting Nuts

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

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

Tube Fitting Nuts

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

Fastening and Joining

Coupling Nuts

Connect and extend threaded rods

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Power Transmission

Rod Alignment Couplers

Rod Alignment Couplers

Reduce wear on bearings and seals by flexing when the cylinder and load aren't precisely even

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