Aluminum Fasteners | McMaster-Carr

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

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8,116 Products

Fastening and Joining

Socket Head Screws

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

102 products

Hex Head Screws

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

207 products

Flat Head Screws

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

50 products

Rounded Head Screws

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

80 products

Captive Panel Screws

Secure panels and enclosures while still having access to them

87 products

Tapping Screws

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

19 products

Thumb Screws

Tighten and loosen by hand without the need for tools

28 products

Shoulder Screws

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

19 products

Quick-Release Pins

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

666 products

Captive Pins

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

8 products

Clevis Pins

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

17 products

Dowel Pins

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

26 products

Cotter Pins

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

6 products

Hex Nuts

Handle most general fastening needs

54 products

Tamper-Resistant Nuts

Hard to detach without special tools to prevent unwanted removal

8 products

Coupling Nuts

Connect and extend threaded rods

21 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

17 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

7 products

Cap Nuts

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

6 products

Rivets

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

576 products

Standoffs

Separate, position, or connect components in assemblies

1,131 products

Spacers

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

1,165 products

Standoff Caps

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

1 product

Binding Barrels

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

156 products

Threaded Inserts

Create new threads or repair stripped threads

158 products

Press-Fit Nuts

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

26 products

Rivet Nuts

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

112 products

Weld Nuts

Weld to metal surfaces to add permanent threads

5 products

Washers

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

192 products

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

6 products

Lock Washers

Resist vibration to prevent fasteners from loosening

9 products

Sealing Washers

Prevent fluids from leaking around fasteners

50 products

Finishing Washers

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

5 products

Spring Plungers

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

6 products

Thread Adapters

Join threads of a different type, size, and gender

699 products

Shim Stock

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

79 products

Shims

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

157 products

Threaded Rods

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

157 products

Unthreaded Inserts

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

10 products

Anchors

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

1 product

Nails

Drive into wood, plastic, drywall, and masonry

10 products

Rivet Tools

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

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

1 product

Staplers

Air-powered, electric, cordless, and manual staplers

21 products

Weld-Backing Tape

Stick to the back of welding seams to contain spatter and prevent gases from weakening the weld

11 products

Repair and Duct Tape

Permanently join or seal surfaces

9 products

Splicing Tape

Connect the ends of paper and film rolls or conveyor belts

8 products

Mounting Tape

Mount everything from signs and panels to carpet and padding

6 products

Masking Tape

Temporarily join or protect surfaces

36 products

Building and Machinery Hardware

T-Slotted Framing and Fittings

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

468 products

Strut Channel Framing and Fittings

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

19 products

Bolt-Together Framing Brackets

Connect the surfaces and corners of bolt-together rails to build guards, tables, and racks

2 products

Locking-Slotted Framing Brackets

Connect locking-slotted rails and reinforce joints to build strong platforms and machine bases

6 products

Cam Handles

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

59 products

Knobs

Position, tighten, and secure fixtures and equipment

56 products

Machine Handles

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

4 products

Window Latches

Hold windows and screens closed for security or open for ventilation

3 products

Vibration-Damping Sheets and Tape

Stick to vibrating surfaces such as duct, between parts, or on floor joists to reduce noise

3 products

Antislip Tape

Add traction to smooth surfaces, such as floors, stairs, and ladder handrails

9 products

Material Handling

L-Tracks

Slide on fittings to secure cargo inside vans and trucks; lighter weight and slimmer than E-Tracks

6 products

Tie-Down Rings

Use as fixed anchor points

1 product

L-Track Cargo Nets

Use with L-Tracks to keep bulky and oddly shaped loads from shifting

1 product

L-Track Straps

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

4 products

E-Tracks

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

1 product

Rope Hooks

Add connection points for rope

4 products

E-Track Beams

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

2 products

Rope Cleats

Temporarily secure rope

12 products

Rope Guides

Route and protect rope

2 products

Webbing Buckles

Join together two ends of webbing and adjust the length as needed

4 products

Loop Clamps

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

92 products

U-Bolt Plates

Reinforce mounted U-bolts for a more secure hold

10 products

U-Bolts

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

20 products

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

27 products

Turnbuckles

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

52 products

Carabiners

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

33 products

Hook and Loop Straps

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

9 products

Cable Ties

Bundle and secure cable, wire, and hose; also known as zip ties

5 products

Hitch Pins

Secure hitch inserts to hitch receivers for towing

2 products

Fabricating and Machining

Panel Alignment Clamps

Align and hold sheet metal panels for drilling, riveting, and welding

6 products

C-Clamps

Temporarily secure workpieces together or to a work surface

10 products

Toggle Clamps

Lock workpieces onto worktables or objects

5 products

Corner Clamps

Align and secure materials at a corner joint

1 product

Magnetic Clamps

Hold magnetic workpieces at common angles such as 90° or 45°

2 products

Spring Clamps

Hold lightweight materials in place, then squeeze to release

1 product

Pipe Welding Clamps

Position and hold pipe joints for welding and assembly

4 products

T-Slot Covers

Snap into T-slots to block chips, debris, and small parts from falling in

6 products

Fixture Clamps

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

67 products

Drill Bushing Installation Tools

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

4 products

T-Slot Nuts

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

6 products

Power Transmission

Connecting Rods

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

243 products

Precision Lead Screws

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

4 products

Linear Drive Nuts

Create a linear positioning system on a rotary shaft without a lead screw

3 products

Heating, Ventilation, and Air Conditioning

HVAC Tape

Seal and patch insulation and duct

48 products

Heat Barriers

Protect equipment and surfaces from damage caused by nearby heat sources

3 products

Fluid Handling

Pipe Locknuts

Thread onto the male end of a pipe fitting so it won't loosen from vibration

10 products

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

8 products

Communication

Tag Rings

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

2 products

Electrical Power, Networking, and Controlling

DIN Rail Mounting Adapters

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

3 products

Wire Splices, Connectors, and Taps

Join wire and protect the connection

6 products

Electrical Insulating Adhesives

Secure hardware on circuit boards while insulating current

2 products

Conductive Tape

Shield cables and electronic components from electromagnetic interference (EMI)

21 products

Conduit Locknuts

Secure threaded conduit fittings to knockouts in outlet boxes or enclosures

7 products