Bolts | McMaster-Carr

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System of Measurement

Thread Size

Length

Threading

Partially Threaded

Threaded on Both Ends

Threaded on One End

Material

Stainless Steel

Fastener Head Type

Finish

Black Zinc Plated

Corrosion-Resistant Coated

Galvanic Barrier Coated

Fastener Strength Grade/Class

ASTM Grade A325

ASTM Grade A490

Head Width

Head Height

Thread Pitch

Thread Spacing

Thread Direction

Right Hand and Left Hand

Thread Type

Metric Rounded Trapezoidal

Metric Trapezoidal

Socket Head Profile

Head Diameter

Specifications Met

Federal Specification

Tensile Strength

Less than 10,000 psi

10,000 psi to 19,999 psi

20,000 psi to 29,999 psi

30,000 psi to 99,999 psi

100,000 psi or greater

Screw Features

Tension Indicating

Drive Size

Screw Size

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

How can we improve?

80,854 Products

Fastening and Joining

Hex Head Screws

Hex Head Screws

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

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

10,403 products

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish

Tighten and loosen by hand without the need for tools

12-Point Screws

12-Point Screws

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

Shoulder Screws

Shoulder Screws

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

Carriage Bolts

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

Tapping Screws

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

Set Screws

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

Square Head Screws

Square Head Screws

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

T-Bolts

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

Wood Screws

Fasten material to wood or pieces of wood to each other

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

Fastener Assortments

Fastener Assortments

Stay prepared by keeping fasteners in common sizes and materials on hand

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Plow Bolts

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

Pentagon Head Screws

Pentagon Head Screws

Create a tamper-resistant joint with a head than can only be removed with a 5-point socket

Hold-Down Bolts

Hold-Down Bolts

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

Joint Clamps for Wood

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

Drywall Screws

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

Jack Screws

Secure computer cables and panels

Threaded Rods

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

Binding Barrels and Screws

Binding Barrels and Screws

Thread together for a low-profile fastener

Single-End Studs

Single-End Studs

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

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Anchors

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

Standoffs

Threaded to separate or connect parts as well as position components in assemblies

Standoff Caps

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

Rivet Nuts

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

Weld Nuts

Weld to metal surfaces to add permanent threads

Captive Pins

Press into holes in thin materials like panels and circuit boards to permanently join or align them

Spring Plungers

Spring Plungers

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

Rivets

Join materials together permanently, especially when too thin or fragile to fasten with screws

Stud Welders

Join studs and pins to metal, leaving no marks on the back of the material

Magnets

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

Hanger Bolt Driver Bits

Hanger Bolt Driver Bits

Turn flat-end bolts and screws

Tapping Screw Installation Tools

Tapping Screw Installation Tools

Use with a hammer drill to install tapping screws in concrete, block, and brick

Fabricating and Machining

Setup Studs

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

T-Slot Bolts

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

T-Slot Nuts

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

T-Slot Cleaners

T-Slot Cleaners

Scrape debris out of machine table T-slots

Drill Bushing Lock Screws

Drill Bushing Lock Screws

Prevent drill bushings from spinning

Locating Pin Lock Screws

Locating Pin Lock Screws

Secure removable locating pins

T-Tracks

Add fixturing to flat surfaces on machines such as table saws, CNC routers, and drill presses

Fixturing Clamps

Fixturing Clamps

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

Fixturing Kits

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

Gear and Bearing Puller Forcing Screws

Gear and Bearing Puller Forcing Screws

Replace forcing screws on gear and bearing pullers

Gear and Bearing Puller Shaft Protectors

Gear and Bearing Puller Shaft Protectors

Prevent forcing screws on pullers from causing damage

Gear and Bearing Puller Step-Plate Adapters

Gear and Bearing Puller Step-Plate Adapters

Provide a surface for forcing screws on pullers to push against

Clamps

Hold workpieces securely in place

Clamp Holding Screws

Clamp Holding Screws

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

Clamp Holding Screw Tips

Clamp Holding Screw Tips

Cover metal holding screws to protect workpieces from scratches

Lathe Tools

Shape workpieces as they rotate on a lathe

Power Transmission

Lead Screws and Nuts

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

Rod Ends

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

Rod End Inserts

Rod End Inserts

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

Rod End Seals

Keep dirt out and lubrication in to extend the life of rod ends

Rod End Nuts

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

Connecting Rods

Connecting Rods

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

Ball Screw/Splines

Ball Screw/Splines

Transmit rotary power, move loads along the shaft, or do both at once

Ball Screws and Nuts

Ball Screws and Nuts

Internal ball bearings roll on screws for low friction when moving components at high speeds

Die Spring Screw Caps

Die Spring Screw Caps

Brace springs and control tension in die sets while simplifying maintenance

Lead and Ball Screw End Supports

Lead and Ball Screw End Supports

Brace and secure the ends of lead screws and ball screws

Roller Screws and Nuts

Roller Screws and Nuts

More contact points to move heavier loads than ball and lead screw assemblies

Splines and Spline Bearings

Splines and Spline Bearings

Transmit rotary power or move loads along the length of splines

Material Handling

Eyebolts

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

Hoist Rings

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

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

Wheel Axles

Connect rotating wheels and support vehicles

U-Bolts

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

Routing Rings

Suspend wire and cable by feeding it through the eyehole

Routing Ring Bases

Routing Ring Bases

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

Jacks

Lift, hold, push, and position heavy objects

Building and Machinery Hardware

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

Bolt-Together Framing and Fittings

Bolt-Together Framing and Fittings

Fasten through equally spaced holes to build and adjust guards, tables, and racks

Locking-Slotted Framing and Fittings

Locking-Slotted Framing and Fittings

Make platforms, bases, and other structures that stand up to more movement than T-slotted framing

Cam Handles

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

Protective Caps

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

Drawer and Cabinet Deadbolt Locks

Drawer and Cabinet Deadbolt Locks

Secure wooden drawers and cabinet doors with a key

Door Strike Plates

Door Strike Plates

Reinforce the area where the latch meets the frame to protect it from friction

Deadbolt Locks

Require a key or combination to unlock from the outside

Flush Bolt Locks

Flush Bolt Locks

Prevent double doors from being opened, or lock one door while the other stays unlocked

Door Tracks

Hang panels to slide over openings when there’s not space for a swinging door

Electrical

Grounding Lugs

Create a common grounding path for internal components and circuits, as well as the enclosure body

Grounding Screws

Grounding Screws

Fasten grounding wires to steel structures, fence posts, and transformers

Battery Terminal Fasteners

Battery Terminal Fasteners

Replace bolts in battery terminals

Binding Posts

Test circuits before making permanent connections

Electrical Enclosure Mounting Channels

Electrical Enclosure Mounting Channels

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

Electrical Enclosure Pole Mounts

Electrical Enclosure Pole Mounts

Everything you need to secure enclosures to round poles or beams

Containers, Storage, and Furniture

Hanging Hooks

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

Pallet Rack Locking Pins

Pallet Rack Locking Pins

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

Facility and Grounds Maintenance

Toilet Mounts

Secure toilet components with flanges and hardware kits

Toilet Seat Fasteners

Toilet Seat Fasteners

Secure toilet seat hinges to your toilet bowl

Communication

Reference Charts

Reference Charts

Check decimal equivalents, drill sizes, or specifications for socket screws

Fluid Handling

Tube and Tube Fittings

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

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