M12 Screws | McMaster-Carr

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Corrosion-Resistant Coated

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Specifications Met

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Head Diameter

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Tensile Strength

10,000 psi to 19,999 psi

20,000 psi to 29,999 psi

30,000 psi to 99,999 psi

100,000 psi or greater

Screw Features

Thread Fit

Metric Interference Sk6

Metric Trapezoidal Class 7e

Metric Trapezoidal Class 7H

Metric Trapezoidal Class 8e

Unified Standard Class 2A

Unified Standard Class 2B

Not Rated

DFARS Specialty Metals

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Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

EAR99

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2,165 Products

Fastening and Joining

Hex Head Screws

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

554 products

Socket Head Screws

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

235 products

Flat Head Screws

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

76 products

Set Screws

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

140 products

Rounded Head Screws

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

58 products

Shoulder Screws

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

201 products

12-Point Screws

12 contact points handle more torque than a hex head while a flange eliminates the need for a washer

5 products

Carriage Bolts

A smooth head provides a finished look while a square neck keeps the bolt in place when using a nut

17 products

Thumb Screws

Tighten and loosen by hand without the need for tools

8 products

Wood Screws

Fasten material to wood or pieces of wood to each other

15 products

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

139 products

Spring Plungers

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

44 products

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

8 products

Weld Nuts

Weld to metal surfaces to add permanent threads

8 products

Thread Adapters

Join threads of a different type, size, and gender

471 products

Single-End Studs

Use the unthreaded end as a pivot point, hinge, shaft, or locator pin

4 products

Standoffs

Separate, position, or connect components in assemblies

1 product

Magnets

Attract or repel metal objects to hang, secure, or position them

1 product

Fabricating and Machining

Setup Studs

Secure setup clamps and fixtures to your machine table or assemble heavy machines

50 products

T-Slot Bolts

Secure clamps and workpieces to machine tables with quicker setup than a T-slot nut and stud

18 products

Grippers

Clamp against uneven or irregularly shaped parts such as castings for a secure hold

2 products

Fixture Kits

Everything needed to mount workpieces of different sizes to your machine table

5 products

Fixture Clamps

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

5 products

Clamp Holding Screws

Replace worn holding screws in clamps or customize with different sizes or styles

1 product

Power Transmission

Precision Lead Screws and Nuts

Pair with a motor for accurate starts and stops in automated motion and positioning applications

11 products

Ball Screws and Nuts

Provide smooth travel where high speeds, accurate positioning, and repeatable movement are required

6 products

Lead Screws and Nuts

Move components in a straight line in clamping and heavy duty lifting and lowering applications

6 products

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

32 products

Lead Screw Collars

Position components and limit travel along a lead screw

1 product

End Supports for Ball Screws and Precision Lead Screws

Brace and secure the ends of ball screws and precision lead screws

1 product

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

15 products

Material Handling

Eyebolts

Route rope through the loop or attach hooks and shackles for lifting

14 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

6 products

Measuring and Inspecting

Transfer Punches

Mark the center of an existing hole onto a separate workpiece

1 product