M6 Fasteners | McMaster-Carr

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Corrosion-Resistant Coated

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Metric Interference Sk6

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Compliant with Exemptions

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Export Control Classification Number (ECCN)

1C998

2B999

EAR99

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

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4,562 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

403 products

Rounded Head Screws

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

560 products

Hex Head Screws

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

571 products

Flat Head Screws

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

325 products

Set Screws

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

240 products

Thumb Screws

Tighten and loosen by hand without the need for tools

78 products

Shoulder Screws

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

385 products

Tapping Screws

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

18 products

Studs

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

43 products

12-Point Screws

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

4 products

Carriage Bolts

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

20 products

Wood Screws

Fasten material to wood or pieces of wood to each other

14 products

Captive Panel Screws

Secure panels and enclosures while still having access to them

8 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

4 products

Oval Head Screws

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

17 products

Elevator Bolts

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

11 products

Clip-On Nuts

Slide onto the edge of thin panels to create a fastening point

12 products

Threaded Inserts

Create new threads or repair stripped threads

179 products

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

29 products

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

10 products

Rivet Nuts

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

63 products

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

18 products

Weld Nuts

Weld to metal surfaces to add permanent threads

30 products

Hex Nuts

Handle most general fastening needs

65 products

Flange Nuts

The flange distributes pressure, so you don't need a washer

34 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

34 products

Coupling Nuts

Connect and extend threaded rods

15 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

22 products

Tamper-Resistant Nuts

Hard to detach without special tools to prevent unwanted removal

9 products

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

10 products

Split Nuts

Swivel to attach at any point on a threaded rod for quick installation

1 product

Square Nuts

Flat sides won’t spin in channels and square holes

7 products

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

2 products

Slotted Round Nuts

Fasten with a screwdriver in tight spots where there's no room for a wrench

1 product

Sealing Nuts

Prevent leaks and block out contaminants with a rubber seal

1 product

Threaded Rods

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

111 products

Thread Adapters

Join threads of a different type, size, and gender

395 products

Binding Barrels

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

24 products

Standoffs

Separate, position, or connect components in assemblies

74 products

Dowel Pins

Align parts before assembly or use as a pivot, shaft, or hinge to join moving components

42 products

Taper Pins

Fit snugly into tapered holes to secure, position, and align components

8 products

Single-End Studs

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

7 products

Anchors

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

1 product

Magnets

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

Threaded Insert Installation Tools

Install helical, key-locking, slotted-drive, and other threaded inserts

49 products

Rivet Tools

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

2 products

Building and Machinery Hardware

T-Slotted Framing and Fittings

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

154 products

Clamp-On Framing Fasteners

Tighten to hold clamp-on framing in place

1 product

Locking-Slotted Framing Fasteners

Secure brackets and other accessories to locking-slotted rails

3 products

Strut Channel Nuts

Fasten on threaded rod to connect components to strut channel

11 products

Knobs

Position, tighten, and secure fixtures and equipment

36 products

Cam Handles

For fast clamping, push down on the handle to draw two parts together

10 products

Power Transmission

Lead Screw Collars

Position components and limit travel along a lead screw

2 products

Ball Screws and Nuts

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

4 products

Connecting Rods

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

51 products

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

43 products

Fabricating and Machining

Bar Clamps

Secure large materials with adjustable arms for even pressure distribution

1 product

Toggle Clamps

Lock workpieces onto worktables or objects

21 products

C-Clamps

Temporarily secure workpieces together or to a work surface

4 products

T-Slot Bolts

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

9 products

T-Slot Nuts

Combine with setup studs or bolts to mount fixtures to machine tables

13 products

Setup Studs

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

40 products

Fixture Clamps

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

14 products

Lathe Chuck Jaw Nuts

Secure jaws to a CNC lathe chuck

1 product

Material Handling

Eyebolts

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

7 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

5 products

Hoist Rings

Pivot to resist stress that would bend or break an eyebolt when lifting at an angle

1 product