Steel Fasteners | McMaster-Carr

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Threading

Partially Threaded

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Fastener Strength Grade/Class

ASTM Grade A325

ASTM Grade A490

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Specifications Met

ANSI/ASSP Z359.12

AREMA MRE Chapter 5, Part 2

Cal/OSHA Compliant Title 8 Section 1646

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Head Height

Tensile Strength

Less than 250 lbf

250 lbf to 499 lbf

500 lbf to 999 lbf

1,000 lbf to 1,999 lbf

2,000 lbf or greater

20,000 psi to 29,999 psi

30,000 psi to 99,999 psi

100,000 psi or greater

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DFARS Specialty Metals

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65,634 Products

Most Likely 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

Hex Head Screws

Hex Head Screws

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

Rounded Head Screws

Rounded Head Screws

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

Hex Nuts

Handle most general fastening needs

All Results

Fastening and Joining

Socket Head Screws

Socket Head Screws

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

Hex Head Screws

Hex Head Screws

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

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

Set Screws

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

Shoulder Screws

Shoulder Screws

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

Wood Screws

Fasten material to wood or pieces of wood to each other

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

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Carriage Bolts

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

Studs

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

Fastener Assortments

Fastener Assortments

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

Tighten and loosen by hand without the need for tools

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

T-Bolts

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

Square Head Screws

Square Head Screws

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

Hold-Down Bolts

Hold-Down Bolts

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

Plow Bolts

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

Drywall Screws

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

Joint Clamps for Wood

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

Jack Screws

Secure computer cables and panels

Dowel Screws

Screw into holes to join two pieces of wood

Oval Head Screws

Oval Head Screws

The domed top sits slightly above the surface of countersunk holes for a decorative look

Hex Nuts

Handle most general fastening needs

Flange Nuts

The flange distributes pressure, so you don't need a washer

Locknuts

Hold fasteners in place to prevent loosening from vibration

Panel Nuts

Extremely thin for tight spots such as electrical panels; also known as dress nuts

Coupling Nuts

Connect and extend threaded rods

Lug Nuts

Secure pneumatic wheels to axles

Easy to tighten and loosen by hand for making frequent adjustments

Push-Button Nuts

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

Square Nuts

Flat sides won’t spin in channels and square holes

Tamper-Resistant Nuts

Tamper-Resistant Nuts

Hard to detach without special tools to prevent unwanted removal

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

Split Nuts

Swivel to attach at any point on a threaded rod for quick installation

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

Slotted Round Nuts

Slotted Round Nuts

Fasten with a screwdriver in tight spots where there's no room for a wrench

Clip-On Nuts

Slide onto the edge of thin panels to create a fastening point

Rivet Nuts

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

Screw-Mount Nuts

Screw-Mount Nuts

Mount with screws, rivets, and nails to add threads to a surface

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

Dowel Nuts

Form joints in blind holes in wood

Weld Nuts

Weld to metal surfaces to add permanent threads

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

Adhesive-Mount Nuts

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

Tube-Connecting Nuts

Tube-Connecting Nuts

Push inside tubes to join them with a threaded stud instead of welding

Rivet-Mount Nuts

Rivet-Mount Nuts

Add threads in hard-to-reach areas and materials that are too thin to be tapped

Threaded Rods

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

Quick-Release Pins

Quick-Release Pins

Fasten or remove components on equipment with a spring-loaded retaining ball

Clevis Pins

Secure parts in place and lock with a cotter pin or retaining ring

Dowel Pins

Align parts before assembly or use as a pivot, shaft, or hinge to join moving components

Cotter Pins

Secure the ends of clevis pins and shafts to keep components in place

Spring Pins

Squeeze and insert into tight holes to hold parts in place with tension

Shear Pins

Use with shear hubs to break at a specific torque and safeguard machinery from overloads

Linch Pins

Slide into holes on clevis pins and shafts and snap down the locking ring so parts won’t fall off

Taper Pins

Fit snugly into tapered holes to secure, position, and align components

Weld Pins

Weld in place for greater rigidity and strength than other pins

Dowel Pin Stock

Dowel Pin Stock

Cut to the length you need for positioning and holding parts in place

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

Lock Washers

Resist vibration to prevent fasteners from loosening

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Leveling Washers

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

Finishing Washers

Finishing Washers

Screw heads sit flush to prevent snagging and to create a neat, finished appearance

Rivets

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

Binding Barrels

Binding Barrels

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

Retaining Rings

Retaining Rings

Hold components on a shaft

Anchors

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

Gravity Pins

Slip through holes in telescoping tubing and wrap around to secure

Nails

Drive into wood, plastic, drywall, and masonry

Screw Nails

Drive like nails but hold like screws in drilled holes in wood, plastic, drywall, and masonry

Standoffs

Separate, position, or connect components in assemblies

Standoff Caps

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

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

Wood Joiners

Connect and repair wood pieces and joints

Hog Rings

Squeeze closed using hog ring pliers to seal sacks, repair fences, and clip on tags

Staples

Use in air-powered, electric, cordless, and manual staplers to secure cardboard and other materials

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Single-End Studs

Single-End Studs

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

Spring Plungers

Spring Plungers

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

Shim Stock

Cut into custom shapes to align, space, and level components on dies, presses, and machinery

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

Panel Clips

Slide over the edge of two or more panels to hold them together without tools or fasteners

Railroad Spikes

Railroad Spikes

Stake rails and base plates to railroad ties

Split Rings

Secure clevis pins, connect components, or add a pull handle; also known as key rings

Spring Button Clips

Spring Button Clips

Join pieces of telescoping tubing using spring force

Tacks

Secure upholstery to a frame

Unthreaded Inserts

Unthreaded Inserts

Reinforce, align, and adjust joints as you tighten a fastener

Fabric Snaps

Complete snaps that join fabric together or fasten fabric to surfaces

Rivet Tools

Install and remove blind, solid, hollow, and other types of rivets

Rivet Setters

Use when driving rivets with an air-powered hammer

Rivet Tool Accessories and Replacement Parts

Rivet Tool Accessories and Replacement Parts

Add accessories like nosepieces and jaws or replace seals and other parts on your rivet tool

Push Nut Installation Tools

Push Nut Installation Tools

Press nuts and retaining rings onto threaded fasteners and shafts

Rivet Nut Tools

Rivet Nut Tools

Install rivet nuts

Anchor Installation Tools

Anchor Installation Tools

Drive with a hammer to expand and secure anchors in place

Socket Retaining Rings

Socket Retaining Rings

Secure sockets and adapters to impact tools

Hanger Bolt Driver Bits

Hanger Bolt Driver Bits

Turn flat-end bolts and screws

Snap-In Nut Tools

Snap-In Nut Tools

Compress the legs of snap-in nuts so they're easy to install and remove

Staplers

Air-powered, electric, cordless, and manual staplers

Magnets

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

Power Transmission

Bearing Nuts

Hold bearings, bushings, pulleys, and gears in place on threaded shafts and spindles

Bearing Lock Washers

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

Lead Screws and Nuts

Lead Screws and Nuts

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

Shock Absorber Mounting Nuts

Shock Absorber Mounting Nuts

Secure shock absorbers after threading them into mounting blocks

Precision Lead Screws and Nuts

Precision Lead Screws and Nuts

Pair with a motor for accurate starts and stops in automated motion and positioning applications

Precision Lead Screw Nut Flanges

Precision Lead Screw Nut Flanges

Pair with precision lead screw nuts to make custom flange nuts that move items along lead screws

Rod Ends

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

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

Lead Screw Collars

Lead Screw Collars

Position components and limit travel along a lead screw

Ball Screws and Nuts

Ball Screws and Nuts

Provide smooth travel where high speeds, accurate positioning, and repeatable movement are required

End Supports for Ball Screws and Precision Lead Screws

End Supports for Ball Screws and Precision Lead Screws

Brace and secure the ends of ball screws and precision lead screws

Roller Screws and Nuts

Roller Screws and Nuts

Create more points of contact to handle much higher loads than ball screws and nuts of the same size

Roller Chain Spring Clips

Roller Chain Spring Clips

Replace the clips that secure ANSI roller chain connecting links

Inverted-Tooth Chain Pins

Inverted-Tooth Chain Pins

Replace the pins in your inverted-tooth chain or link two chains together

Hydraulic Cylinder Mounts

Hydraulic Cylinder Mounts

Restrain cylinders and secure loads to the end of the rod

Ball Screw/Splines and Bearings

Ball Screw/Splines and Bearings

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

Building and Machinery Hardware

T-Slotted Framing Fasteners

T-Slotted Framing Fasteners

Secure brackets and other accessories to T-slotted rails

T-Slotted Framing Structural Brackets

T-Slotted Framing Structural Brackets

Join T-slotted rail surfaces and corners to build virtually any structure

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

Clamp-On Framing and Fittings

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

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

Cam Handles

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

Knobs

Position, tighten, and secure fixtures and equipment

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

Machine Handles

Machine Handles

Arms give you extra leverage to secure and position jigs, fixtures, and other equipment

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

Bar Grating Clips

Bar Grating Clips

Secure grating to your support structure

Brackets

Connect surfaces in an assembly

Protective Plugs

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

Protective Caps

Protective Caps

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

Leveling Mount Inserts

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

Leveling Mounts

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

Window Latches

Hold windows and screens closed for security or open for ventilation

Fabricating and Machining

Clamps

Hold workpieces securely in place

Clamp Holding Washers

Clamp Holding Washers

Replace worn washers on open-arm toggle clamps to keep holding screws in place

Window Poles

Open and close windows

Holders for Locking Pliers

Holders for Locking Pliers

Secure to a table or benchtop and slide in locking pliers for a hands-free way to hold your work

Setup Studs

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

T-Slot Nuts

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

T-Slot Bolts

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

T-Slot Cleaners

T-Slot Cleaners

Scrape debris out of machine table T-slots

Fixture Clamps

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

Drill Bushings

Fit in holes to guide drill bits and other cutting tools for precise and repeatable holes and cuts

Drill Bushing Installation Tools

Drill Bushing Installation Tools

Get a good grip to press removable drill bushings into fixture plates

Fixture Kits

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

Core Pins

Add to molds and pour in plastic to form holes in finished parts

Ejector Pins

Push finished parts out of molds

Ejector Sleeves

Ejector Sleeves

Use with mold pins to form holes, bosses, and other features in parts

Ejector Blades

Flat end pushes thin-walled parts out of molds better than ejector pins

Lathe Tool Insert Holder Replacement Parts

Lathe Tool Insert Holder Replacement Parts

Replace clamps, screws, shims, and other parts in lathe tool insert holders

Lathe Chuck Jaw Nuts

Lathe Chuck Jaw Nuts

Secure jaws to a CNC lathe chuck

Punch Pins

Use with press dies to punch 1/8" and larger holes; modify to fit your application

Broach Shims

Slide between a keyway broach and bushing to control the keyway's depth when cutting more than once

Hammers

Strike nails and chisels to drive them; also use to shape surfaces

Material Handling

Webbing Buckles

Webbing Buckles

Pair with webbing to make adjustable straps

Webbing Hooks

Add to the end of webbing in order to latch it onto other objects

Webbing Guides

Prevent webbing from twisting and use as anchor points; also known as footman's loops

Webbing

Create straps for holding cargo in place

Webbing Tips

Attach to webbing to prevent frayed ends and make it easier to thread

Webbing Rings

Add looped connection spots

E-Track Cargo Nets

E-Track Cargo Nets

Pair with E-Tracks to contain bulky loads against the sides of vans, trucks, and trailers

E-Track Storage Bags

E-Track Storage Bags

Attach to E-Tracks to hold objects

E-Track Webbing Guides

E-Track Webbing Guides

Secure webbing to E-Tracks and prevent it from twisting

E-Tracks

Add straps and other parts to keep cargo from moving inside vans and trucks; stronger than L-Tracks

E-Track D-Rings

E-Track D-Rings

Add flexible connection points to E-Tracks for securing loads in different directions

E-Track Beams

Snap into place between two E-Tracks to brace loads or add new levels, maximizing vertical space

E-Track Straps

Add to E-Tracks to keep cargo from shifting inside vans and trailers; also known as logistic straps

E-Track Couplings

E-Track Couplings

Connect the ends of E-Track straps

E-Track Hooks

Snap into E-Tracks to hang equipment and attach load-securing straps

E-Track Webbing Tethers

E-Track Webbing Tethers

Tether material to E-Tracks or use with a coupling to extend the length of an E-Track strap

Tie-Down Rings

Use as fixed anchor points

L-Track Mounting Studs

L-Track Mounting Studs

Mount threaded accessories onto L-Tracks

L-Track Tie-Down Rings

L-Track Tie-Down Rings

Add pivoting connection points to L-Tracks to secure loads in different directions

L-Track Straps

Attach to L-Tracks and ratchet the buckle to tighten around cargo; also known as logistic straps

L-Track Hooks

Slide into L-Tracks to hang equipment and attach load-securing straps

Tie-Down Hooks

Hook on straps to secure objects

Ratchet Straps

Connect to anchor points and tighten incrementally to increase the tension, holding cargo in place

Tie-Down Washers

Tie-Down Washers

Angled sides align and hold tie-down straps

Bungee Cord Hooks

Bungee Cord Hooks

Add to bungee cords to hook them onto rings and loops

Straps for Winches and Ratchet Straps

Straps for Winches and Ratchet Straps

Feed through a winch or ratchet strap to secure loads

Tow Straps

Tow or tie down loads

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

Chain Rings

Join chains and add connectors for binding, towing, and lifting

Quick Links

Join rope, cable, and chain to secure loads

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

Turnbuckles

Twist the body or end fittings to adjust the length and tension of attached rope and chain

Carabiners

Hook onto rope and webbing to quickly connect objects, fittings, and other lengths of rope

Hooks

Lift, hang, and bind loads with rope and chain

Ring Links

Bend, hammer, or twist closed to connect chain links and attach fittings

U-Bolts

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

U-Bolt Plates

Reinforce mounted U-bolts for a more secure hold

Loop Clamps

Hold pipe snug against the mounting surface to prevent movement that may cause breakage

Tie Wire Hangers

Tie Wire Hangers

Hang lightweight items such as suspended ceilings and lighting fixtures

Routing Ring Bases

Routing Ring Bases

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

Routing Rings

Suspend wire and cable by feeding it through the eyehole

Hook and Loop Straps

Hook and Loop Straps

Pull apart and secure again and again as the size of your bundle changes

Cable Holders

Mount to a surface to secure and route cable

Twist Ties

Wind the ends to bundle cable and wire or close bags and sacks

Cable Tie Mounts

Cable Tie Mounts

Attach to walls, machines, and other surfaces and add a cable tie to organize and secure bundles

Baling Wire

Secure large bundles such as lumber, cardboard, and wire coils

Hitch Pins

Secure hitch inserts to hitch receivers for towing

Conveyor Belt Lacing Pins

Conveyor Belt Lacing Pins

Insert and lock in place to connect belt lacing ends

Conveyor Belt Lacing

Conveyor Belt Lacing

Join conveyor belt ends with a strong, reliable connection; easier to install than endless belts

Conveyors

Roller, skate wheel, ball transfer, belt, and vacuum conveyors

Scaffold Locking Pins

Scaffold Locking Pins

Fasten base plates, guardrail posts, and other components to scaffold frames

Containers, Storage, and Furniture

Workbench Top Fasteners

Workbench Top Fasteners

Secure wood and plastic tops to bases

Heating, Ventilation, and Air Conditioning

Insulation Hanger Studs

Insulation Hanger Studs

Press insulation sheets onto the spike to secure them to walls and other flat surfaces

Electrical

Battery Terminal Fasteners

Battery Terminal Fasteners

Replace bolts in battery terminals

Battery Terminal Adapters

Battery Terminal Adapters

Convert one battery terminal style to another

Conduit and Conduit Fittings

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

DIN Rail Mounting Adapters

DIN Rail Mounting Adapters

Attach to components not made for DIN rail and clip on to install

Wire Connectors

Wire Connectors

Join two or more wires for a secure connection

Fluid Handling

Pipe and Pipe Fittings

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

Hose End Safety Straps

Hose End Safety Straps

Wrap around the levers on cam-and-groove hose fittings to prevent accidental release and spills

Hose Crimpers

Crimp ferrules onto hose to secure fittings

Tube and Tube Fittings

Tube and Tube Fittings

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

Communication

Tag Rings

Loop onto tags to attach them to lanyards, key rings, and other objects

Tag Ties

Wrap through tag holes to connect to items such as lanyards and key rings

Tag Washers

Bolt onto surfaces to mount tag rings and ties

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