M20 Bolts | McMaster-Carr

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System of Measurement

Thread Size

Length

Thread Pitch

Fastener Strength Grade/Class

Threading

Threaded on Both Ends

Fastener Head Type

Material

Finish

Hot-Dipped Galvanized

Zinc Yellow-Chromate Plated

Specifications Met

Thread Spacing

Head Width

Thread Type

Metric Rounded Trapezoidal

Drive Style

Hex with Pilot Recess

Head Height

Socket Head Profile

Thread Fit

Metric Trapezoidal Class 7e

Metric Trapezoidal Class 7H

Metric Trapezoidal Class 8e

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

Thread Direction

Left Hand

Right Hand

Right Hand and Left Hand

Drive Size

Head Diameter

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

EAR99

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

REACH

650 Products

Fastening and Joining

Hex Head Screws

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

163 products

Socket Head Screws

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

89 products

Flat Head Screws

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

20 products

Carriage Bolts

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

1 product

Shoulder Screws

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

63 products

Set Screws

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

64 products

Threaded Rods

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

67 products

Spring Plungers

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

2 products

Sockets

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

1 product

Power Transmission

Precision Lead Screws and Nuts

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

14 products

Connecting Rods

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

7 products

Rod Ends

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

50 products

Ball Screws and Nuts

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

10 products

Lead Screws and Nuts

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

5 products

Lead Screw Collars

Position components and limit travel along a lead screw

1 product

Roller Screws and Nuts

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

4 products

Material Handling

Hoist Rings

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

24 products

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

3 products

U-Bolts

Anchor heavy pipe, tube, and conduit; stronger than routing clamps and hangers

3 products

Fabricating and Machining

Setup Studs

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

26 products

T-Slot Nuts

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

8 products

T-Slot Bolts

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

17 products