Locking Bolts | McMaster-Carr

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80,000 psi to 99,999 psi

100,000 psi to 119,999 psi

120,000 psi to 139,999 psi

140,000 psi or greater

Thread Fit

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

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4,417 Products

Fastening and Joining

Hex Head Screws

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

881 products

Socket Head Screws

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

640 products

Rounded Head Screws

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

826 products

Set Screws

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

551 products

Flat Head Screws

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

162 products

Shoulder Screws

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

552 products

Plow Bolts

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

50 products

Tapping Screws

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

5 products

Standoffs

Separate, position, or connect components in assemblies

69 products

Rivet Tools

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

4 products

Building and Machinery Hardware

Slide-Bolt Latches

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

120 products

Door Strike Plates

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

15 products

Drawer and Cabinet Deadbolt Locks

Secure wooden drawers and cabinet doors with a key

116 products

Flush Bolt Locks

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

12 products

Swinging Latches

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

61 products

Push-to-Close Latches

Automatically hold doors shut when you push them closed

2 products

Lock Cylinders

Install in doors to lock and unlock them with a key

7 products

Deadbolt Locks

Require a key or combination to unlock from the outside

40 products

Window Latches

Hold windows and screens closed for security or open for ventilation

4 products

Gate Latches

Restrict unwanted entry to gated areas

4 products

Door Handles and Knobs

Open and close latching doors

222 products

Fabricating and Machining

Drill Bushing Lock Screws

Prevent drill bushings from spinning

14 products

Containers, Storage, and Furniture

Toilet Partition Latches

Replace the latch on your toilet partition door

20 products

Locker Locks

Restrict access to lockers and their contents

34 products