Lock Springs | McMaster-Carr

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System of Measurement

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Spring Type

Wire Diameter

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Extended Length @ Maximum Load

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DFARS Specialty Metals

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

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Nose Material

Performance

Body Material

Washer Type

Load

Nose Diameter

Minimum Load

Spring Plunger Nose Type

9,462 Products

Fastening and Joining

Spring Plungers

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

1,404 products

Lock Washers

Resist vibration to prevent fasteners from loosening

1,109 products

Power Transmission

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

Gas Springs

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

841 products

Gas Spring Mounts

Attach gas springs to panels, lids, and doors using a bracket or stud

139 products

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

103 products

Building and Machinery Hardware

Push-to-Close Latches

Automatically hold doors shut when you push them closed

149 products

Slide-Bolt Latches

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

20 products

Draw Latches

Pull toolbox and other container lids closed and secure them

21 products

Cam Latches

Secure drawers, cabinets, mailboxes, and other enclosures

61 products

Rotary Latches

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

44 products

Multipoint Latches

Secure tall cabinets and trailer doors at multiple spots along their frame for extra holding power

4 products

Door Springs

Extend and snap back to pull storm doors and gates closed

18 products

Hinges

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

200 products

Door Closers

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

5 products

Bellows

Prevent dust and debris from damaging moving parts

6 products

Overhead Door Spring Winding Rods

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

3 products

Fabricating and Machining

Springs for Locking Pliers

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

6 products

Material Handling

Hook Latches

Replace the latch on hooks

51 products