M20 Thread Hex Head Screws | McMaster-Carr

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System of Measurement

Thread Pitch

Threading

Partially Threaded

Fastener Strength Grade/Class

Material

Stainless Steel

Fastener Head Type

Finish

Hot-Dipped Galvanized

Zinc Yellow-Chromate Plated

Specifications Met

Thread Spacing

Head Width

Drive Style

Hex with Pilot Recess

Thread Type

Head Height

Socket Head Profile

Thread Fit

Metric Class 4g6g

Metric Class 5g6g

Metric Class 6g

Metric Class 6h

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Thread Direction

Drive Size

Shoulder Length

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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

RoHS

Compliant with Exemptions

REACH

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397 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

Shoulder Screws

Shoulder Screws

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

Flat Head Screws

Flat Head Screws

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

Building and Machinery Hardware

Protective Plugs

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

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