5/8"-18 Screws | McMaster-Carr

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Threaded on Both Ends

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Zinc Yellow-Chromate Plated

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Export Control Classification Number (ECCN)

EAR99

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427 Products

Fastening and Joining

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

133 products

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

34 products

Flat Head Screws

Fit in countersunk holes for a flush finish that won't snag on surrounding parts

14 products

Set Screws

Exert pressure at the tip to hold parts in place, unlike screws that hold material together with threads

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Shoulder Screws

Rotate parts around the cylinder under the head to guide and align them during installation

24 products

12-Point Screws

12 contact points handle more torque than a hex head while a flange eliminates the need for a washer

2 products

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

3 products

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

77 products

Thread Adapters

Join threads of a different type, size, and gender

11 products

Weld Nuts

Weld to metal surfaces to add permanent threads

26 products

Material Handling

Jacks

Lift, hold, push, and position heavy objects

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Screw Jack End Fittings

Thread onto screw jacks to create pivot points with clevis rod ends and other linkages

1 product

Screw Jack Mounts

Stabilize screw jacks to support loads

1 product

Eyebolts

Route rope through the loop or attach hooks and shackles for lifting

4 products

Power Transmission

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

33 products

Precision Lead Screw Nuts

Pair with precision lead screws for accurate starts and stops in your assembly

2 products

Fabricating and Machining

Gear and Bearing Puller Forcing Screws

Replace forcing screws on gear and bearing pullers

2 products

Grippers

Clamp against uneven or irregularly shaped parts such as castings for a secure hold

2 products

Measuring and Inspecting

Transfer Punches

Mark the center of an existing hole onto a separate workpiece

1 product