Locking Bolts | McMaster-Carr

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System of Measurement

Thread Size

Length

Material

Fastener Head Type

Tip Type

Drive Style

Finish

Corrosion-Resistant Coated

Zinc Yellow-Chromate Plated

Locking Type

Threading

Thread Pitch

Drive Size

Thread Type

Thread Spacing

Specifications Met

Hardness

Thread Fit

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Performance

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

Yes

RoHS

Compliant

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

2B999

EAR99

Fastener Strength Grade/Class

Head Height

Head Diameter

9,255 Products

Fastening and Joining

Hex Head Screws

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

886 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

Flat Head Screws

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

162 products

Plow Bolts

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

50 products

Set Screws

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

5,325 products

Shoulder Screws

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

552 products

Tapping Screws

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

71 products

Standoffs

Separate, position, or connect components in assemblies

69 products

Rivet Tools

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

7 products

Building and Machinery Hardware

Slide-Bolt Latches

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

120 products

Flush Bolt Locks

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

12 products

Push-to-Close Latches

Automatically hold doors shut when you push them closed

2 products

Drawer and Cabinet Deadbolt Locks

Secure wooden drawers and cabinet doors with a key

116 products

Swinging Latches

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

61 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

Door Strike Plates

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

15 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