5/8"-11 Screws | McMaster-Carr

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Threaded on Both Ends

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Hot-Dipped Galvanized

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30,000 psi to 99,999 psi

100,000 psi or greater

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2,020 Products

Fastening and Joining

Hex Head Screws

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

561 products

Socket Head Screws

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

113 products

Shoulder Screws

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

176 products

Flat Head Screws

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

55 products

Set Screws

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

118 products

Carriage Bolts

A smooth head provides a finished look while a square neck keeps the bolt in place when using a nut

74 products

Rounded Head Screws

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

21 products

Plow Bolts

The head sits flush with countersunk holes while the bolt stays in place when tightening a nut

17 products

Square Head Screws

Turn the large flat sides with a wrench into square holes that stop further rotation

21 products

12-Point Screws

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

10 products

Thumb Screws

Tighten and loosen by hand without the need for tools

9 products

T-Bolts

Turn by hand for easy fastening, use as a handle, or attach as a point for straps and clamps

1 product

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

6 products

Hold-Down Bolts

Hold material under the bent head while the other end is tightened down with a nut

4 products

Spring Plungers

Apply accurate, consistent pressure for positioning, indexing, and ejecting parts

100 products

Anchors

Secure anything from signs to heavy machinery in concrete, brick, and drywall

122 products

Threaded Rods

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

302 products

Single-End Studs

Use the unthreaded end as a pivot point, hinge, shaft, or locator pin

10 products

Thread Adapters

Join threads of a different type, size, and gender

64 products

Binding Barrels and Screws

Thread together for a low-profile fastener

4 products

Weld Nuts

Weld to metal surfaces to add permanent threads

8 products

Anchor Installation Tools

Drive with a hammer to expand and secure anchors in place

1 product

Fabricating and Machining

T-Slot Bolts

Secure clamps and workpieces to machine tables with quicker setup than a T-slot nut and stud

30 products

Setup Studs

Secure setup clamps and fixtures to your machine table or assemble heavy machines

49 products

Grippers

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

3 products

Fixture Clamps

Secure your workpiece to a fixture table so it won't move during machining

17 products

Fixture Kits

Everything needed to mount workpieces of different sizes to your machine table

6 products

Clamp Holding Screws

Replace worn holding screws in clamps or customize with different sizes or styles

1 product

Clamps

Hold workpieces securely in place

6 products

Material Handling

Eyebolts

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

68 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

8 products

Wheel Axles

Connect rotating wheels and support vehicles

1 product

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

12 products

Containers, Storage, and Furniture

Hanging Hooks

Hang tools, hoses, garments, and other supplies on walls for easy access

1 product

Power Transmission

Connecting Rods

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

9 products

Measuring and Inspecting

Transfer Punches

Mark the center of an existing hole onto a separate workpiece

2 products