Spring Mechanisms | McMaster-Carr

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23,114 Products

Most Likely Products

Push-to-Close Latches

Automatically hold doors shut when you push them closed

141 products

Compression Springs

When squeezed, springs push back to their original length

2,816 products

Extension Springs

When stretched, springs pull their ends back together

4,719 products

Spring Plungers

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

1,404 products

Spring Stops

Push back against workpieces to hold them in place against stops and rails

34 products

Springs for Locking Pliers

Change out worn or broken springs in the handle of your locking pliers

5 products

All Results

Building and Machinery Hardware

Push-to-Close Latches

Automatically hold doors shut when you push them closed

141 products

Rotary Latches

Open doors around corners and other obstructions; adjust for misalignment when closing

49 products

Cam Locks and Latches

Secure drawers, cabinets, mailboxes, and other enclosures

71 products

Draw Latches

Pull toolbox and other container lids closed and secure them

21 products

Swinging Latches

Swing the arm into the strike plate to keep shed, refrigerator, and other doors closed

2 products

Slide-Bolt Latches

Slide the bolt to secure everything from swinging gates to overhead garage doors

20 products

Hinges

Mount to doors and panels so they can swing open and closed

192 products

Prop Rods

Prop hood, trunk, and other lids open at a variety of angles

1 product

Door Holders

Mount to doors, walls, or floors to keep doors open

13 products

Lid Supports

Keep lids on cabinets, hatches, and chests open and then close them smoothly or softly

61 products

Door Closers

Automatically and smoothly pull doors, storm doors, and gates closed

107 products

Door Springs

Extend and snap back to pull storm doors and gates closed

18 products

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

38 products

Roof Hatches

Access the roof from inside your building

7 products

Protective Caps

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

25 products

Positioning Arms

Mount and position tools and other small equipment

4 products

Indicating Knobs

Control devices and view settings at a glance

7 products

Overhead Door Spring Winding Rods

Keep your overhead door balanced on both tracks for smooth, even opening and closing

3 products

Pull Handles

Use a handle to open and close cabinets, drawers, and doors

6 products

Strut Channel Nuts

Fasten on threaded rod to connect components to strut channel

116 products

T-Slotted Framing and Fittings

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

51 products

Power Transmission

Compression Springs

When squeezed, springs push back to their original length

2,816 products

Extension Springs

When stretched, springs pull their ends back together

4,719 products

Torsion Springs

Wrap around a shaft or rod to maintain pressure on objects as they rotate

558 products

Shock Absorbers

Slow and stop loads to reduce impact that can damage equipment like conveyors, lifters, and presses

72 products

Spring Assortments

Keep extension, compression, and torsion spring types of various sizes on hand

7 products

Gas Springs

Support the weight of doors, hatches, and lids to assist opening and closing

837 products

Strip Springs

Wrap around a shaft and extend to pull objects in a linear direction

77 products

Rotor Springs

Wind to store power, then release to create rotary motion—similar to winding a wristwatch

10 products

Air Springs

Absorb vibration in moving equipment such as conveyors and transfer stations; lift and level loads

25 products

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

1,680 products

Linear Wave Springs

Absorb vibration and fill in gaps along the length of an object

22 products

Die Springs

Support heavy loads with minimal compression in high-impact jobs such as punching and stamping

484 products

Garter Springs

Exert radial force from all directions to maintain pressure on shafts or in seals

72 products

Motor Brushes

Replace motor brushes on small DC motors

49 products

Air Cylinders

Push and pull loads to do everything from stamping materials to sorting parts on conveyors

299 products

Hydraulic Check Valves

Open to allow hydraulic fluid flow in one direction and close when flow stops or reverses

78 products

Air Flow Check Valves

Open to allow air flow in one direction and close when flow stops or reverses

21 products

Roller Chain Spring Clips

Replace the clips that secure ANSI roller chain connecting links

7 products

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

103 products

V-Belt Drive Pulleys

Pair with a V-belt to transfer motion from a rotating shaft

10 products

Precision Lead Screw Nuts

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

23 products

Fabricating and Machining

Spring Stops

Push back against workpieces to hold them in place against stops and rails

34 products

Spring Locating Pins

Apply side force to workpieces to clamp them in place

52 products

Work Supports

Reduce vibration and deformation by adjusting to secure your workpiece

3 products

Fixture Clamps

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

38 products

Springs for Locking Pliers

Change out worn or broken springs in the handle of your locking pliers

5 products

Clothespins

Hold light items, secure covers, and seal bags

4 products

Vises

Secure workpieces in place

2 products

Spring Clamp Workholders

Secure small parts in spring clamps to keep hands free for soldering, gluing, and assembling

7 products

Pliers Sets

A variety of pliers styles and sizes for whatever job comes up

8 products

Wire-Gripping Pliers

Pull, bend, and cut wire; also known as lineman's pliers

3 products

Adjustable Pliers

A range of jaw positions for turning fasteners and gripping workpieces

7 products

Long-Nose Pliers

Grab, bend, and position wire and other small parts

64 products

Wire-Forming Pliers

Loop and bend wire; also known as round-nose pliers

11 products

Parallel-Jaw Pliers

Jaws grip better than standard pliers to keep irregularly shaped objects from slipping

6 products

Spring Clamps

Hold lightweight materials in place, then squeeze to release

39 products

Panel Alignment Clamps

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

5 products

Clamping Screw Clamps

Mount in a base or through a threaded hole, then tighten the tip to hold a workpiece in place

24 products

Wire Cutters

Snip through various types of wire, even hardened and steel-reinforced wire

99 products

Plastic Cutters

Shear plastic and leave smooth, finished edges

18 products

Rope Cutters

Trim lengths of rope, cord, string, and twine

2 products

Cable Cutters

Slice through electrical, data, armored, coaxial, and fiber-optic cable

6 products

Scissors

Cut through a wide range of materials from paper and plastic to carpet and Kevlar

23 products

End Cutters

Wide jaws cut steel wire, nails, and small rivets close to the surface; also known as nippers

6 products

Bolt Cutters

Snip metal chain, bolts, rods, rivets, wire, and padlocks

8 products

Pipe, Tube, and Hose Cutters

Make clean cuts in pipe, tube, hose, and conduit

10 products

Cable Tie Cutters

Safety guards on the tip help you sever cable ties without damaging bundled material

1 product

Miter Angle Cutters

Make cuts at precise angles; use on weatherstripping, dowels, and trim for door and window frames

3 products

Strapping Cutters

Cut through steel and plastic strapping

1 product

Wire Duct Cutters

Trim plastic slotted wire duct to fit inside enclosures and control panels

1 product

Punch, Stamp, and Chisel Holders

Protect your hands from accidental hammer strikes by gripping punches, stamps, and chisels

1 product

Hole Saws

Connect to a drill or drill press to make circular cuts

56 products

Drill Chuck Arbors

Attach drill chucks to machine spindles

3 products

Air Hammer Retainers

Replace the retainer on your air hammer

5 products

Hole Punches

Punch holes in metal, plastic, and fabric

8 products

Slitting Saw Arbors

Mount and center slitting saws on milling machines

2 products

Fastening and Joining

Spring Plungers

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

1,404 products

Clevis Pins

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

23 products

Spring Pins

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

1,775 products

Cotter Pins

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

1,013 products

Fastener Assortments

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

2 products

Anchors

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

29 products

Push Nuts

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

81 products

Snap-In Nuts

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

99 products

Turn-Button Fastener Bases

Mate with turn-button fastener eyelets to secure fabrics to solid surfaces

2 products

Clip-On Nuts

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

142 products

Document Clips

Hold loose papers together without creating a permanent mark

20 products

Retaining Rings

Hold components on a shaft

2,361 products

Spring Button Clips

Join pieces of telescoping tubing using spring force

40 products

Anchor Toggles

Replace your anchor toggle if it falls when removing your toggle bolt

5 products

Lock Washers

Resist vibration to prevent fasteners from loosening

468 products

Retaining Ring Pliers

Install and remove rings inside a bore or around a shaft

Socket Retaining Rings

Secure sockets and adapters to impact tools

39 products

Adjustable Wrenches

Adjust the jaws to fasten different size nuts, bolts, or workpiece

2 products

Snap-In Nut Tools

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

3 products

Electromagnets

Place on flat metal surfaces and turn on the power to create a magnetic hold

3 products

Material Handling

Hook Latches

Replace the latch on hooks

51 products

Shackles

Lift, pull, and anchor heavy loads while keeping them secure with a pin

8 products

Carabiners

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

224 products

Snap Hooks

Spring, slide, or press open to quickly connect rope and chain

125 products

Winches

Wind up and let out rope, chain, and webbing for lifting and towing

1 product

Tool Retractors

Hang tools and pull them down as needed; let go, and the cable pulls them up and out of the way

47 products

Hoists

Lift and position heavy loads using manual, electric, or air power

6 products

Gripper Compensation Devices

Let grippers grab uneven parts to avoid jams during assembly, picking, and machine tending

7 products

Tool Balancers

Minimize user fatigue by suspending tools to offset their weight

42 products

Vacuum Cup Levelers

Adjust vacuum cups to lift items with variable heights; also known as spring plungers

17 products

Casters

Mount on the bottom of objects for easy movement

20 products

Vibration-Damping Hangers

Reduce vibration and noise in suspended equipment, such as air-handling units, pipe, and duct

8 products

Ball Transfers

Install in arrays to create platforms for conveying, rotating, and positioning heavy objects

4 products

Drum Trucks

Slide under drums to move them around your facility

9 products

Paper Roll Dispensers

Hold paper rolls and cleanly cut sheets with a spring-loaded blade

18 products

Box Trucks

Enclosed sides keep tools, equipment, and other items from falling out

3 products

Electrical Power, Networking, and Controlling

Audio Receptacles

Install in walls and panels and pair with plugs to make audio connections

4 products

RJ45 Plugs

Pair with sockets or receptacles to make Ethernet connections

3 products

Power Connectors

Plugs, sockets, receptacles, and other connectors for powering equipment

6 products

Fiber-Optic Connector Pliers

Safely and securely grip connectors in packed panels without damaging them

1 product

Wire Splice Pliers

A long nose with stepped jaws presses down evenly for parallel crimping

1 product

Fuse Blocks

Send power to one or more circuits and house a fuse for each of them

9 products

Wire and Cable Strippers

Remove the outer insulation on wire and cable

2 products

Bonding and Grounding Clamps

Add cable or use included cable to create a grounding path, which prevents static charge buildup

1 product

Grounding Clamps

Attach grounding wire to equipment to ground electrical current

6 products

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

35 products

Switch Guards

Prevent people from activating switches accidentally

2 products

Battery Contacts

Add or replace contacts in battery holders and circuit boards

9 products

Relay Contacts

Replace contacts on your relay

47 products

Safety Equipment

Leggings

Protect shins and feet from radiant heat, flames, welding sparks, and molten metal splashes

2 products

Safety Gates

Swing closed behind you for easy entrance and exit

52 products

Tool Lanyards

Tether tools to your harness so they don't fall if dropped

3 products

Guardrail Gates

Add to a custom guardrail system so personnel can pass without climbing over

3 products

Measuring and Inspecting

Spring Test Probes

Use in spring test probe sockets to test for continuity and damaged components in circuit boards

79 products

Edge Finders

Locate edges, shoulders, center points, and lines on workpieces in milling machines

3 products

Center Punches

Mark center holes in metal and other material

2 products

Scales

Bench-top, hanging, floor, and conveyor scales

25 products

Force Gauges

Test objects to see how much tension and compression force they can bear

11 products

Lubricating

Grease Gun Tip Adapters

Quickly switch between standard, button-head, and flush-style grease fittings

1 product

Grease Gun Couplers

Extend the dispensing tip on grease guns to lubricate angled and hard-to-reach areas

2 products

Fluid Handling

Hose Kink Absorbers

Prevent hose from kinking to ensure maximum flow and extend hose life

1 product

Manual On/Off Valves

Start and stop flow through a line

59 products

Diverting Valves

Redirect flow between ports

22 products

Check Valves

Permit flow in only one direction by closing when flow stops or reverses

531 products

RTDs

Measure and transmit liquid, gas, and surface temperature more precisely than thermocouples

19 products

Vacuum Breakers

When pressure drops, vents open to prevent suction from drawing liquid back upstream

2 products

Flow-Adjustment Valves

Gradually open and close to control the volume of air and liquids through a line

4 products

Valve Actuators

Automatically start and stop flow to your valve

17 products

Wraparound Heaters

Wrap around drums, pails, and other containers to indirectly warm their contents

41 products

Thermocouples

Measure and transmit liquid, gas, and surface temperature

69 products

Hose Clamp Installation Tools

Tighten hose clamps over hose and fittings to secure them

4 products

Thermocouple and RTD Fittings

Alter probe immersion depth or adapt unthreaded connections for use with threaded tanks and heads

4 products

Hose and Tube Clamps

Connect hose and tube to barbed fittings

99 products

Air-Actuated On/Off Valves

Operate on compressed air to start and stop flow faster than motor-driven valves

161 products

Containers, Storage, and Furniture

Pegboard Clips

Hold instructions, safety sheets, and small bags on pegboard

2 products

Tool Holders

Mount brooms, cordless drills, flashlights, and other tools

52 products

Chests

Secure equipment and supplies at jobsites; also known as job boxes

26 products

Grease Gun Holders

Keep grease guns within reach of machinery

1 product

Pegboard Tool Holders

Store tools such as pliers, screwdrivers, and hammers on pegboard

8 products

Facility and Grounds Maintenance

Dock Door Insect Screens

Prevent bugs from entering through open dock doors

6 products

Communication

Signs

Everything from accident prevention to traffic control to exit signs

3 products

Sign Posts

Drive into the ground or mount to a base to display signs

5 products

Mail Slots

Push mail, envelopes, and other documents through walls and closed doors

8 products

Tamper-Evident Seal Presses

Squeeze the handles to seal locks on wire tamper-evident seals

8 products

Sealing

Spring-Loaded Seals

Seal rods and pistons with a wider range of temperature and chemical resistance than U-cup seals

54 products