5/8"-11 Bolts | McMaster-Carr

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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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2,001 Products

Fastening and Joining

Hex Head Screws

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

516 products

Socket Head Screws

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

114 products

Flat Head Screws

Fit in countersunk holes for a flush finish

55 products

Carriage Bolts

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

73 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

Shoulder Screws

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

176 products

Square Head Screws

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

21 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

Set Screws

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

118 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

Threaded Rods

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

302 products

Anchors

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

122 products

Single-End Studs

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

10 products

Binding Barrels and Screws

Thread together for a low-profile fastener

4 products

Thread Adapters

Join threads of a different type, size, and gender

26 products

Spring Plungers

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

100 products

Weld Nuts

Weld to metal surfaces to add permanent threads

8 products

Material Handling

Eyebolts

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

68 products

Hoist Rings

Pivot to resist stress that would bend or break an eyebolt when lifting at an angle

39 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

U-Bolts

Anchor heavy pipe, tube, and conduit; stronger than routing clamps and hangers

25 products

Fabricating and Machining

T-Slot Bolts

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

32 products

T-Slot Nuts

Combine with setup studs or bolts to mount fixtures to machine tables

15 products

Setup Studs

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

49 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

3 products

Power Transmission

Connecting Rods

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

9 products

Containers, Storage, and Furniture

Hanging Hooks

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

1 product

Building and Machinery Hardware

Cam Handles

For fast clamping, push down on the handle to draw two parts together

2 products