Metric Cap Screws | McMaster-Carr

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	System of Measurement System of Measurement

Metric

	Thread Type Thread Type

Metric

	Thread Size Thread Size

	Thread Pitch Thread Pitch

	Length Length

	Head Type Head Type


Socket	Rounded

Hex	Flat

12-Point	Headless

Oval

	Material Material

	Finish Finish

Black

Black Oxide

Black Phosphate

Black Ultra-Corrosion-
Resistant Coated

Blue Dyed

Hot-Dipped Galvanized

Zinc Yellow-Chromate Plated

Zinc-Aluminum Coated

Zinc-Flake Coated

	Threading Threading

	Fully Threaded
	Partially Threaded

	Drive Style Drive Style


Hex	External Hex	Phillips

Torx	Torx Plus	Slotted

External 12-Point	Tamper- Resistant Torx	Hex with Pilot Recess

Tamper- Resistant Hex	JIS	Wrench Flat

Drilled Spanner

	Socket Head Profile Socket Head Profile


Standard	Low

Ultra-Low

	Thread Direction Thread Direction


Right Hand	Left Hand

	Head Diameter Head Diameter

	Fastener Strength Grade/Class Fastener Strength Grade/Class

Class 8.8

Class 10.9

Class 12.9

	Specifications Met Specifications Met

	Head Height Head Height

	Thread Spacing Thread Spacing

Coarse

Fine

Extra Fine

	Drive Size Drive Size

	Tensile Strength Tensile Strength

100,000 psi or greater

Not Rated

	Hardness Hardness

	Thread Fit Thread Fit

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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Fasteners

Socket Head Screws

With a deeper drive than flat and rounded head screws, socket head screws withstand more torque for a tighter hold. Install in a counterbored hole or above the surface.

Rounded Head Screws

A domed head sits above the surface of your material. Includes screws such as pan, button, binding, and truss head screws.

Hex Head Screws

Hex head screws are easy to install with a wrench for a secure hold. Use them with a nut or in tapped holes.

Flat Head Screws

Flat and oval head screws are angled under the head to fit in countersunk holes.

12-Point Screws

The head makes 12 points of contact with a wrench to handle more torque than a socket head or hex head screw.

Fastener Assortments

Reference Charts

Includes charts that list specifications and tightening guidelines for socket screws as well as charts that provide decimal equivalents and drill sizes.