Metric Screws | McMaster-Carr

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Hex with Pilot Recess

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Tamper-Resistant Hex

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Threading

Threaded on Both Ends

Finish

Corrosion-Resistant Coated

Hot-Dipped Galvanized

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Metric Rounded Trapezoidal

Fastener Strength Grade/Class

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Specifications Met

Thread Direction

Right Hand and Left Hand

Rounded Head Style

Drive Size

Screw Size

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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

Not Rated

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

24,776 Products

Fastening and Joining

Socket Head Screws

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

2,890 products

Rounded Head Screws

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

3,345 products

Flat Head Screws

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

2,001 products

Hex Head Screws

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

3,196 products

Shoulder Screws

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

2,560 products

Tapping Screws

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

981 products

Set Screws

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

1,812 products

Thumb Screws

Tighten and loosen by hand without the need for tools

336 products

Carriage Bolts

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

108 products

Oval Head Screws

The domed top sits slightly above the surface of countersunk holes for a decorative look

87 products

12-Point Screws

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

21 products

Wood Screws

Fasten material to wood or pieces of wood to each other

75 products

Captive Panel Screws

Secure panels and enclosures while still having access to them

94 products

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

3 products

Studs

Press, weld, or screw in place to add a threaded fastening point

209 products

Elevator Bolts

Create a flush joint to allow movement in tight spaces such as grain elevators and belting systems

34 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

24 products

Threaded Rods

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

1,150 products

Rivet Nuts

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

197 products

Weld Nuts

Weld to metal surfaces to add permanent threads

133 products

Single-End Studs

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

47 products

Standoffs

Separate, position, or connect components in assemblies

419 products

Thread Adapters

Join threads of a different type, size, and gender

2,334 products

Binding Barrels

Create custom low-profile fasteners with binding barrel posts, caps, and screws

70 products

Spring Plungers

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

215 products

Captive Pins

Press into holes in thin materials like panels and circuit boards to permanently join or align them

44 products

Anchors

Secure anything from signs to heavy machinery in concrete, brick, and drywall

4 products

L-Keys

Turn fasteners from either end and reach into tight spots

409 products

Screwdriver Bits

Pair with drivers to turn screws

106 products

Screwdrivers

Tighten and loosen screws

125 products

T-Handle Keys

To turn fasteners in hard-to-reach spots, there's a long shaft and a grip for your whole hand

181 products

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

8 products

Magnets

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

33 products

Fabricating and Machining

Setup Studs

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

307 products

T-Slot Bolts

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

96 products

Grippers

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

6 products

Fixture Clamps

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

55 products

Fixture Kits

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

15 products

Bar Clamps

Secure large materials with adjustable arms for even pressure distribution

3 products

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

146 products

Pull Knobs

Use a knob to open and close cabinets, drawers, and doors

27 products

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

97 products

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

1 product

Locking-Slotted Framing and Fittings

Make platforms, bases, and other structures that stand up to more movement than T-slotted framing

3 products

Protective Feet

Add to furniture and light equipment to protect floors from scratches and wear

2 products

Power Transmission

Precision Lead Screws and Nuts

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

164 products

Ball Screws and Nuts

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

56 products

Connecting Rods

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

263 products

Lead Screws and Nuts

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

29 products

End Supports for Ball Screws and Precision Lead Screws

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

3 products

Ball Screw/Splines and Bearings

Transmit rotary power, move loads along the shaft, or do both at once

3 products

Lead Screw Collars

Position components and limit travel along a lead screw

7 products

Roller Screws and Nuts

Create more points of contact to handle much higher loads than ball screws and nuts of the same size

8 products

Material Handling

Eyebolts

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

101 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

42 products

Conveyors

Roller, skate wheel, ball transfer, belt, and vacuum conveyors

12 products

Communication

Reference Charts

Check decimal equivalents, drill sizes, or specifications for socket screws

1 product

Measuring and Inspecting

Transfer Punches

Mark the center of an existing hole onto a separate workpiece

14 products

Coordinate Measuring Machine Fixture Clamps

Keep workpieces in place for hands-free measuring and inspecting

3 products