M8 Bolts | McMaster-Carr

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System of Measurement

Thread Size

Length

Thread Pitch

Fastener Head Type

Material

Threading

Threaded on Both Ends

Finish

Corrosion-Resistant Coated

Titanium Carbon Nitride (TiCN) Coated

Zinc Flake Coated

Fastener Strength Grade/Class

Drive Style

Hex with Pilot Recess

Phillips

Slotted

Spring Plunger Driver

Tamper-Resistant Hex

Tamper-Resistant Torx

Socket Head Profile

Thread Type

Metric Rounded Trapezoidal

Thread Spacing

Thread Direction

Right Hand and Left Hand

Specifications Met

Head Diameter

Head Width

Screw Features

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

Color

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

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

Yes

Export Control Classification Number (ECCN)

3,375 Products

Fastening and Joining

Hex Head Screws

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

746 products

Socket Head Screws

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

361 products

Rounded Head Screws

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

281 products

Flat Head Screws

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

206 products

Thumb Screws

Tighten and loosen by hand without the need for tools

55 products

Shoulder Screws

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

368 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

27 products

Set Screws

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

240 products

Tapping Screws

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

5 products

Studs

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

36 products

Elevator Bolts

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

14 products

Captive Panel Screws

Secure panels and enclosures while still having access to them

5 products

Oval Head Screws

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

12 products

Wood Screws

Fasten material to wood or pieces of wood to each other

16 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

4 products

Threaded Rods

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

149 products

Rivet Nuts

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

44 products

Weld Nuts

Weld to metal surfaces to add permanent threads

25 products

Single-End Studs

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

7 products

Binding Barrels

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

13 products

Standoffs

Separate, position, or connect components in assemblies

1 product

Thread Adapters

Join threads of a different type, size, and gender

331 products

Anchors

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

1 product

Spring Plungers

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

25 products

Magnets

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

8 products

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

1 product

Fabricating and Machining

Setup Studs

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

62 products

T-Slot Bolts

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

12 products

T-Slot Nuts

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

13 products

Fixture Kits

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

1 product

Fixture Clamps

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

14 products

Clamp Holding Screw Tips

Cover metal holding screws to protect workpieces from scratches

1 product

Clamp Holding Screws

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

3 products

Material Handling

Eyebolts

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

10 products

Hoist Rings

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

12 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

6 products

Conveyor T-Slot Bolts

Drop into the T-slot to mount components

12 products

Power Transmission

Connecting Rods

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

57 products

Rod Ends

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

98 products

Rod End Nuts

Attach to rods, pipe, and tubing to make pivot and hinge points

2 products

Precision Lead Screws and Nuts

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

13 products

Ball Screws and Nuts

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

4 products

Lead Screw Collars

Position components and limit travel along a lead screw

1 product

Building and Machinery Hardware

T-Slotted Framing and Fittings

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

53 products

Cam Handles

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

8 products