M20 Fasteners | McMaster-Carr

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System of Measurement

Thread Size

Thread Pitch

Length

Material

Stainless Steel

Fastener Strength Grade/Class

Threading

Partially Threaded

Threaded on Both Ends

Fastener Head Type

Finish

Hot-Dipped Galvanized

Phosphate Coated

Zinc Yellow-Chromate Plated

Thread Spacing

Thread Type

Metric Rounded Trapezoidal

Metric Trapezoidal

Nut Type

Externally Threaded

Specifications Met

Thread Direction

Right Hand and Left Hand

Drive Style

External Square

Hex with Pilot Recess

Socket Head Profile

Height

Head Height

Hex Nut Profile

Thread Fit

Metric Class 4g6g

Metric Class 5g6g

Metric Class 6g

Metric Class 6G

Metric Class 6h

Metric Class 6H

Metric Class 7H

Metric Trapezoidal Class 7e

Metric Trapezoidal Class 7H

Metric Trapezoidal Class 8e

Drive Size

Width

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

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828 Products

Fastening and Joining

Hex Head Screws

Hex Head Screws

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

Socket Head Screws

Socket Head Screws

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

Set Screws

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

Carriage Bolts

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

Flat Head Screws

Flat Head Screws

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

Shoulder Screws

Shoulder Screws

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

Hex Nuts

Handle most general fastening needs

Coupling Nuts

Connect and extend threaded rods

Panel Nuts

Extremely thin for tight spots such as electrical panels; also known as dress nuts

Locknuts

Hold fasteners in place to prevent loosening from vibration

Flange Nuts

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

Cap Nuts

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

Easy to tighten and loosen by hand for making frequent adjustments

Square Nuts

Flat sides won’t spin in channels and square holes

Threaded Rods

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

Quick-Release Pin Receptacles

Quick-Release Pin Receptacles

Secure quick-release pins when you don’t have a through hole

Taper Pins

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

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Power Transmission

Bearing Nuts

Hold bearings, bushings, pulleys, and gears in place on threaded shafts and spindles

Shock Absorber Mounting Nuts

Shock Absorber Mounting Nuts

Secure shock absorbers after threading them into mounting blocks

Precision Lead Screws and Nuts

Precision Lead Screws and Nuts

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

Lead Screws and Nuts

Lead Screws and Nuts

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

Lead Screw Collars

Lead Screw Collars

Position components and limit travel along a lead screw

Rod Ends

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

Connecting Rods

Connecting Rods

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

Roller Screws and Nuts

Roller Screws and Nuts

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

Ball Screws and Nuts

Ball Screws and Nuts

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

Fluid Handling

Pipe Locknuts

Thread onto the male end of a pipe fitting so it won't loosen from vibration

Fabricating and Machining

Setup Studs

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

Fixture Clamps

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

Fixture Kits

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

T-Slot Bolts

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

T-Slot Nuts

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

Lathe Chuck Jaw Nuts

Lathe Chuck Jaw Nuts

Secure jaws to a CNC lathe chuck

C-Clamps

Temporarily secure workpieces together or to a work surface

Toggle Clamps

Lock workpieces onto worktables or objects

Material Handling

Eyebolts

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

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

Hoist Rings

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

U-Bolts

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

Building and Machinery Hardware

Machine Handles

Machine Handles

Arms give you extra leverage to secure and position jigs, fixtures, and other equipment

Leveling Mount Inserts

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

Electrical

Conduit and Conduit Fittings

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)