Zinc Plated Bolts | McMaster-Carr

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Hex with Pilot Recess

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Unified Standard Class 1B

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Unified Standard Class 3B

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30,000 psi to 99,999 psi

100,000 psi or greater

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DFARS Specialty Metals

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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13,741 Products

About Hex Head Screws and Bolts

Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.

Hex Head Screws

Steel Hex Head Screws

Steel Hex Head Screws

Our most popular hex head screws

Steel Flanged Hex Head Screws

Steel Flanged Hex Head Screws

Our most popular flanged hex head screws for protecting thin and soft materials

JIS Steel Flanged Hex Head Screws

JIS Steel Flanged Hex Head Screws

Meet Japanese Industrial Standards while protecting thin and soft materials

Steel Serrated-Flange Hex Head Screws

Steel Serrated-Flange Hex Head Screws

Serrations on the flange grip material to keep screws in place, even under vibration

Steel Hex Head Screws for Blind Holes

Steel Hex Head Screws for Blind Holes

Install these screws when you can only access one side of material

Steel Hex Head Screw Kits

Steel Hex Head Screw Kits

Come with compatible nuts and washers for a complete, strong joint

Steel Cotter-Pin-Locking Hex Head Screws

Steel Cotter-Pin-Locking Hex Head Screws

Secure rotating parts subjected to vibration

JIS Steel Hex Head Screws

JIS Steel Hex Head Screws

Meet Japanese Industrial Standards and fit into tight spaces where standard heads can't

Steel Wire-Locking Hex Head Screws

Steel Wire-Locking Hex Head Screws

One of our most vibration-resistant steel hex head screws

Self-Aligning Steel Hex Head Screws

Self-Aligning Steel Hex Head Screws

Thread in smoothly even when offset by up to 15°

Steel Hex Head Screw Kits for Metal Pipe Flanges

Steel Hex Head Screw Kits for Metal Pipe Flanges

All the screws and nuts you need to join steel or cast iron pipe flanges

Left-Hand-Thread Steel Hex Head Screws

Left-Hand-Thread Steel Hex Head Screws

Turn these screws to the left to tighten

Steel Hex Head Screws with External-Tooth Lock Washer

Steel Hex Head Screws with External-Tooth Lock Washer

External teeth on the washer hold material to resist vibration

Steel Hex Head Screw Kits for Plastic Pipe Flanges

Steel Hex Head Screw Kits for Plastic Pipe Flanges

All the screws, nuts, and washers you need to join plastic pipe flanges

Steel Thread-Locking Hex Head Screws

Steel Thread-Locking Hex Head Screws

A nylon patch locks parts in place on vibrating machinery

Steel Hex Head Screw, Nut, and Washer Assortments

Steel Hex Head Screw, Nut, and Washer Assortments

Keep a range of hex head screw, nut, and washer sizes on hand for a variety of jobs

Steel Flanged Phillips Hex Head Screws

Steel Flanged Phillips Hex Head Screws

The Phillips drive is accessible in tight spaces while the flange protects thin and soft materials

Steel Oversized Serrated-Flange Hex Head Screws

Steel Oversized Serrated-Flange Hex Head Screws

A 10% larger flange gives you more gripping power than a standard serrated flange

Steel Serrated-Flange Thread-Locking Hex Head Screws

Steel Serrated-Flange Thread-Locking Hex Head Screws

Dual protection to prevent loosening from vibration

Steel Flanged Slotted Hex Head Screws

Steel Flanged Slotted Hex Head Screws

The slotted drive is accessible in tight spaces while the flange protects thin and soft materials

Steel Heavy Hex Head Screw Kits for Metal Pipe Flanges

Steel Heavy Hex Head Screw Kits for Metal Pipe Flanges

Join steel or cast iron pipe flanges with screw and nuts 10% wider than standard

Steel Serrated-Flange Phillips Hex Head Screws

Steel Serrated-Flange Phillips Hex Head Screws

Choose when you have limited clearance to turn a wrench but also need vibration resistance

Grounding Hex Head Screws

Grounding Hex Head Screws

Ground and secure connections in electrical boxes and panels

Steel Slotted Hex Head Screws with External-Tooth Lock Washer

Steel Slotted Hex Head Screws with External-Tooth Lock Washer

External teeth on the washer hold material to resist vibration in spaces where wrenches won't fit

Steel Serrated-Flange Hex Head Screw and Nut Assortments

Steel Serrated-Flange Hex Head Screw and Nut Assortments

Stock up on various sizes of serrated-flange screws and nuts to grip material and resist vibration

Steel Flanged Slotted Hex Head Screws with Internal-Tooth Lock Washer

Steel Flanged Slotted Hex Head Screws with Internal-Tooth Lock Washer

Internal teeth on the washer reduce marring to surfaces as they hold material to resist vibration

Steel Flanged Hex Head Screw and Nut Assortments

Steel Flanged Hex Head Screw and Nut Assortments

A range of flanged fastener sizes for protecting thin and soft materials across a variety of jobs

Other Products

Socket Head Screws

Socket Head Screws

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

Rounded Head Screws

Rounded Head Screws

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

Flat Head Screws

Flat Head Screws

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

Tapping Screws

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

Carriage Bolts

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

Tighten and loosen by hand without the need for tools

Anchors

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

Elevator Bolts

Create a flush joint to allow movement in tight spaces such as grain elevators and belting systems

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Studs

Press, weld, or screw in place to add a threaded fastening point

Plow Bolts

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

Threaded Rods

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

Wood Screws

Fasten material to wood or pieces of wood to each other

Fastener Assortments

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

Binding Barrels

Binding Barrels

Create custom low-profile fasteners with binding barrel posts, caps, and screws

Hold-Down Bolts

Hold-Down Bolts

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

Eyebolts

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

Wheel Axles

Connect rotating wheels and support vehicles

Masonry and Concrete Screws

Masonry and Concrete Screws

Anchor parts to masonry and concrete without tapping the hole first

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

L-Keys

Turn fasteners from either end and reach into tight spots

T-Bolts

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

Shoulder Screws

Shoulder Screws

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

T-Slotted Framing Fasteners

T-Slotted Framing Fasteners

Secure brackets and other accessories to T-slotted rails

Magnets

Attract or repel metal objects to hang, secure, or position them

Joint Clamps for Wood

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

Hanging Hooks

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

Strut Channel Nuts

Strut Channel Nuts

Fasten on threaded rod to connect components to strut channel

U-Bolts

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

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

Spring Plungers

Spring Plungers

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

Standoffs

Separate, position, or connect components in assemblies

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Lead Screws and Nuts

Lead Screws and Nuts

Move components in a straight line in clamping and heavy duty lifting and lowering applications

Routing Rings

Suspend wire and cable by feeding it through the eyehole

Set Screws

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

Connecting Rods

Connecting Rods

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

Weld Nuts

Weld to metal surfaces to add permanent threads

Clamp-On Framing Fasteners

Clamp-On Framing Fasteners

Tighten to hold clamp-on framing in place

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Hoist Rings

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

Routing Ring Bases

Routing Ring Bases

Temporarily attach routing rings to steel and iron surfaces with a magnet

Battery Terminal Fasteners

Battery Terminal Fasteners

Replace bolts in battery terminals

Screw Starters

Grip and start turning screws that are too small to hold or located in hard-to-reach spots

Rod End Inserts

Rod End Inserts

Attach to rod ends to increase the amount of misalignment they can handle

Rod End Nuts

Attach to rods, pipe, and tubing to make pivot and hinge points

Electrical Enclosure Mounting Channels

Electrical Enclosure Mounting Channels

Position components inside electrical enclosures without drilling holes, which can leak

Locking-Slotted Framing Fasteners

Locking-Slotted Framing Fasteners

Secure brackets and other accessories to locking-slotted rails

Nutdrivers

Tighten and loosen nuts and bolts

Drywall Screws

Fasten panels of drywall to materials such as wood, metal, and drywall

Pallet Rack Locking Pins

Pallet Rack Locking Pins

Prevent forklifts from dislodging pallet rack beams when loading and unloading pallets

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

Screwdriver Bits

Screwdriver Bits

Pair with drivers to turn screws

Torque Screwdrivers

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

Door Track End Stops

Door Track End Stops

Prevent door track hangers from rolling off the track

Screwdrivers

Tighten and loosen screws

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