Steel Bolts | McMaster-Carr

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Compliant with Exemptions

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304 Stainless Steel

Steel

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81,229 Products

Fastening and Joining

Hex Head Screws

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

10,475 products

Socket Head Screws

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

7,263 products

Rounded Head Screws

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

9,107 products

Flat Head Screws

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

5,580 products

Thumb Screws

Tighten and loosen by hand without the need for tools

1,322 products

12-Point Screws

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

208 products

Carriage Bolts

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

850 products

Shoulder Screws

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

6,716 products

Tapping Screws

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

5,352 products

Set Screws

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

5,000 products

Square Head Screws

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

145 products

T-Bolts

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

21 products

Elevator Bolts

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

187 products

Oval Head Screws

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

250 products

Studs

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

673 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

99 products

Wood Screws

Fasten material to wood or pieces of wood to each other

1,227 products

Plow Bolts

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

50 products

Captive Panel Screws

Secure panels and enclosures while still having access to them

373 products

Pentagon Head Screws

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

15 products

Fastener Assortments

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

12 products

Hold-Down Bolts

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

21 products

Concrete Screws

Anchor parts to concrete, block, and brick without tapping the hole first

111 products

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

3 products

Drywall Screws

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

132 products

Jack Screws

Secure computer cables and panels

24 products

Dowel Screws

Screw into holes to join two pieces of wood

13 products

Threaded Rods

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

4,854 products

Binding Barrels

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

782 products

Single-End Studs

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

184 products

Rivet Nuts

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

367 products

Weld Nuts

Weld to metal surfaces to add permanent threads

581 products

Anchors

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

845 products

Standoffs

Separate, position, or connect components in assemblies

843 products

Standoff Caps

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

64 products

Thread Adapters

Join threads of a different type, size, and gender

1,973 products

Spring Plungers

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

1,327 products

Captive Pins

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

76 products

Rivets

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

6 products

Screwdriver Bits

Pair with drivers to turn screws

990 products

L-Keys

Turn fasteners from either end and reach into tight spots

1,023 products

Screwdrivers

Tighten and loosen screws

728 products

Screw Starters

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

27 products

T-Handle Keys

To turn fasteners in hard-to-reach spots, there's a long shaft and a grip for your whole hand

444 products

Nutdrivers

Tighten and loosen nuts and bolts

121 products

Torque-Limiting Keys

Used to install carbide inserts in cutting tools, a handle limits the amount of torque generated

42 products

Screwdriver/Nutdrivers

Quickly switch between driving screws and driving nuts

5 products

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

142 products

Hanger Bolt Driver Bits

Turn flat-end bolts and screws

4 products

Speeder Handles

Crank the handle to fasten nuts and bolts quickly

5 products

Sockets

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

1,983 products

Magnets

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

68 products

Stud Welders

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

37 products

Fabricating and Machining

Setup Studs

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

627 products

T-Slot Bolts

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

247 products

T-Slot Nuts

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

314 products

T-Slot Cleaners

Scrape debris out of machine table T-slots

2 products

Locating Pin Lock Screws

Secure removable locating pins

2 products

Drill Bushing Lock Screws

Prevent drill bushings from spinning

14 products

T-Tracks

Versatile mounting tracks for jigs, fences, and other custom setups

4 products

Fixture Clamps

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

162 products

Fixture Kits

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

23 products

Gear and Bearing Puller Forcing Screws

Replace forcing screws on gear and bearing pullers

18 products

Clamping Screws

Apply pressure through a flat-tipped screw to hold material in place

37 products

Clamp Holding Screws

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

52 products

Power Transmission

Rod Ends

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

1,520 products

Rod End Inserts

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

29 products

Rod End Seals

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

16 products

Rod End Nuts

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

8 products

Connecting Rods

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

565 products

Lead Screws and Nuts

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

672 products

Precision Lead Screws

Pair with precision lead screw nuts for accurate starts and stops in your assembly

546 products

Precision Lead Screw Nuts

Pair with precision lead screws for accurate starts and stops in your assembly

7 products

Precision Lead Screw Nut Flanges

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

18 products

Lead Screw Collars

Position components and limit travel along a lead screw

55 products

Ball Screws and Nuts

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

205 products

Die Spring Screw Caps

Brace springs and control tension in die sets while simplifying maintenance

10 products

End Supports for Ball Screws and Precision Lead Screws

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

16 products

Ball Screw/Splines and Bearings

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

3 products

Roller Screws and Nuts

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

8 products

Sleeve Splines

Pair with sleeve spline bearings to transmit rotary power or move loads along the shaft

3 products

Material Handling

Eyebolts

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

938 products

Hoist Rings

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

376 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

98 products

Wheel Axles

Connect rotating wheels and support vehicles

22 products

U-Bolts

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

1,039 products

Routing Rings

Suspend wire and cable by feeding it through the eyehole

37 products

Routing Ring Bases

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

2 products

Jacks

Lift, hold, push, and position heavy objects

234 products

Hitch Clamps

Strengthen the joint between your hitch insert and receiver to prevent rattling and swaying

2 products

Conveyor T-Slot Bolts

Drop into the T-slot to mount components

12 products

Building and Machinery Hardware

T-Slotted Framing and Fittings

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

265 products

Clamp-On Framing and Fittings

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

1 product

Bolt-Together Framing and Fittings

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

1 product

Locking-Slotted Framing and Fittings

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

3 products

Cam Handles

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

85 products

Door Tracks

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

13 products

Door Strike Plates

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

1 product

Drawer and Cabinet Deadbolt Locks

Secure wooden drawers and cabinet doors with a key

4 products

Flush Bolt Locks

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

4 products

Protective Caps

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

10 products

Containers, Storage, and Furniture

Hanging Hooks

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

78 products

Pallet Rack Locking Pins

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

2 products

Electrical

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Electrical Enclosure Mounting Channels

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

9 products

Battery Terminal Fasteners

Replace bolts in battery terminals

3 products

Facility and Grounds Maintenance

Toilet Mounts

Secure toilet components with flanges and hardware kits

4 products