Master Locks | McMaster-Carr

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Stainless Steel

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Danger—Locked Out

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1,251 Products

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Padlocks

Choose-a-Color Lockout Padlocks with Labels

Choose-a-Color Lockout Padlocks with Labels

Alert workers to locked-out equipment with a danger label and eye-catching colors

Padlocks

The most widely used padlocks

Extra-Clearance Choose-a-Color Lockout Padlocks

Extra-Clearance Choose-a-Color Lockout Padlocks

Easy to spot and tall enough to fit large hasps and thick chains

Extra-Clearance Padlocks

Extra-Clearance Padlocks

Secure thick chains and items with large hasps

Nonconductive Choose-a-Color Lockout Padlocks with Labels

Nonconductive Choose-a-Color Lockout Padlocks with Labels

Safely lock out electrical equipment

Choose-a-Color Lockout Padlocks

Choose-a-Color Lockout Padlocks

Prevent workers from operating equipment during maintenance

Extra-Clearance Choose-a-Color Lockout Padlocks with Labels

Extra-Clearance Choose-a-Color Lockout Padlocks with Labels

Lock out equipment with large hasps, and alert workers with bright colors and a danger label

Resettable Combination Padlocks

Resettable Combination Padlocks

Set your own rolling digit combination and change it at any time

Weather-Resistant Padlocks

Weather-Resistant Padlocks

Withstand rain and snow

Weather-Resistant Extra-Clearance Padlocks

Weather-Resistant Extra-Clearance Padlocks

Lock up outdoor equipment with thick chains or oversized hasps

Weather- and Cut-Resistant Padlocks

Weather- and Cut-Resistant Padlocks

Lock outdoor gates and equipment without worrying about the shackle being cut

Weather-Resistant Extra-Clearance Resettable Combination Padlocks

Weather-Resistant Extra-Clearance Resettable Combination Padlocks

Secure outdoor equipment with large hasps or chains and change your combination at any time

Lockout Padlock Sets

Lockout Padlock Sets

Stock up on lockout padlocks that open with a master key

Key-Controlled Resettable Combination Padlocks

Key-Controlled Resettable Combination Padlocks

Open with a control key or combination, which you can set and change any time

Weather-Resistant Resettable Combination Padlocks

Weather-Resistant Resettable Combination Padlocks

Lock outdoor equipment and change your combination at any time

Key-Controlled Combination Padlocks

Key-Controlled Combination Padlocks

Open with a control key or the combination

Flexible-Shackle Padlocks

Flexible-Shackle Padlocks

Bend and weave the shackle to secure multiple points with a single lock

Bluetooth Combination Padlocks

Bluetooth Combination Padlocks

Unlock with your Bluetooth-enabled smartphone—no lost keys or forgotten combinations

Weather-Resistant Choose-a-Color Lockout Padlocks

Weather-Resistant Choose-a-Color Lockout Padlocks

Lock out equipiment outdoors to prevent accidental startup during maintenance

Adjustable-Shackle Padlocks

Adjustable-Shackle Padlocks

Secure hasps and chains of many sizes

Choose-a-Color Combination Padlocks

Choose-a-Color Combination Padlocks

Come in a variety of colors for easy identification and organization

Post-Shackle Padlocks

Post-Shackle Padlocks

Secure hasps in tight spaces

Cut-Resistant Padlocks

Cut-Resistant Padlocks

Raised shoulders shield the shackle from bolt cutters and other tools

Quick-Attach Combination Padlocks

Quick-Attach Combination Padlocks

Hook with a latch instead of a shackle

Padlock Sets

Stock up on padlocks that open with a master key

Breakable-Shackle Padlocks

Breakable-Shackle Padlocks

Strike the shackle with a hammer for quick access in an emergency

U-Lock Padlocks

U-Lock Padlocks

Tall and wide shackle separates from the body to fit around large objects

Cut-Resistant Resettable Combination Padlocks

Cut-Resistant Resettable Combination Padlocks

Guard against bolt cutters and other tools, and reset your combination at any time

Combination Padlocks

Combination Padlocks

Add security without the hassle of carrying keys or installing a permanent lock

Enclosed-Shackle Padlocks

Enclosed-Shackle Padlocks

Keep your shackle hidden to thwart break-in attempts

TSA-Accessible Resettable Combination Padlocks

TSA-Accessible Resettable Combination Padlocks

Lock up your luggage when traveling

Cut-Resistant Bluetooth Combination Padlocks

Cut-Resistant Bluetooth Combination Padlocks

Our most secure Bluetooth padlocks

Weather-Resistant Extra-Clearance Padlocks with Identification Tags

Weather-Resistant Extra-Clearance Padlocks with Identification Tags

Lock outdoor equipment with large hasps and label it so ownership is clear

Replaceable-Cylinder Padlocks

Replaceable-Cylinder Padlocks

Simplify keying and rekeying around your facility by slotting in your own cylinder

Extra-Clearance Padlocks with Identification Tags

Extra-Clearance Padlocks with Identification Tags

Lock up equipment with large hasps and label it so ownership is clear

Other Products

Keys

Replace or cut new keys for padlocks, enclosures, cabinet doors, and locksets

Cam Locks

Unlock with a key, magnetic fob, screwdriver, or number combination

Drawer and Cabinet Deadbolt Locks

Drawer and Cabinet Deadbolt Locks

Secure wooden drawers and cabinet doors with a key

Cable Locks

Wrap around gates, tools, and equipment to prevent break-ins or theft

Lock Cylinders

Install in doors to lock and unlock them with a key

Locker Locks

Restrict access to lockers and their contents

Door Handles and Knobs

Door Handles and Knobs

Open and close latching doors

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