Sealing Machine Screws | McMaster-Carr

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	Screw Features Screw Features

With Washer

Sealing

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Length Length

	Drive Style Drive Style


External Hex	Hex

Phillips	Tamper- Resistant Torx

	Material Material

Stainless Steel

Steel

	Finish Finish

Black Oxide

Passivated

Zinc Plated

	Head Type Head Type


Rounded	Flat

Socket	Hex

	Washer Type Washer Type


Internal-Tooth Lock	External-Tooth Lock

Spring Lock	Split Lock

Flat

	Rounded Head Style Rounded Head Style


Pan	Button

	Head Diameter Head Diameter

	Threading Threading

	Fully Threaded
	Partially Threaded

	Head Height Head Height

	Thread Direction Thread Direction

	Right Hand

	Thread Type Thread Type

UNC

Metric

UNF

	Thread Pitch Thread Pitch

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

RoHS Compliant

	Drive Size Drive Size

	Tensile Strength Tensile Strength

60,000 to 79,999 psi

80,000 to 99,999 psi

100,000 psi or greater

Not Rated

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

REACH Compliant

	Hardness Hardness

	Thread Spacing Thread Spacing

Coarse

Fine

	Thread Fit Thread Fit

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1,566 Products

Screws and Bolts

Rounded Head Screws

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

Flat Head Screws

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

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.

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.

Blunt Screws for Sheet Metal

Often referred to as Type B thread-forming screws, these require a drilled hole and are typically used in 0.050"-0.200" material.