Tap Bolts | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Length Length

	Material Material

	Finish Finish

Zinc Plated

Zinc Yellow-Chromate Plated

Black Oxide

Corrosion-Resistant Coated

Black Phosphate

Hot-Dipped Galvanized

Zinc-Flake Coated

Cadmium Plated

Blue Dyed

Black Ultra-Corrosion-
Resistant Coated

	Fastener Strength Grade/Class Fastener Strength Grade/Class

	Head Width Head Width

	Head Height Head Height

	Thread Direction Thread Direction


Right Hand	Left Hand

	Drive Style Drive Style


External Hex	Slotted

	Thread Spacing Thread Spacing

Coarse

Fine

Extra Fine

	Thread Pitch Thread Pitch

	Thread Type Thread Type

	Specifications Met Specifications Met

	Thread Fit Thread Fit

	Tensile Strength Tensile Strength

Less than 100,000 psi

100,000 to 119,999 psi

120,000 to 129,999 psi

130,000 to 159,999 psi

160,000 psi or greater

Not Rated

	Hardness Hardness

	Screw Features Screw Features


Flanged	Sealing

Vented	Tension Indicating

With Washer

	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

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Locking Type Locking Type


Serrations	Wire

Thread Locker	Lock Washer

Expanding Sleeve

	Flange Diameter Flange Diameter

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About Hex Head Screws and Bolts

Hex Head Screws

Use these general purpose screws for a variety of fastening applications.

Heavy Hex Head Screws

These screws meet specifications for high-pressure or structural applications.

Flanged Hex Head Screws

Eliminate the need for a separate washer—these screws distribute pressure where the screw meets the surface without taking up as much space as a washer.

Tight-Spot Hex Head Screws

A high-strength alternative to blind rivets, use these screws when only one side of the material is accessible.

Vibration-Resistant Hex Head Screws

Prevent loosening from vibration with these screws, which have a locking feature to hold them tight.

Vented Hex Head Screws

Drilled through the head and shaft, these screws vent fluid and gases trapped below the screw, making them good for vacuum applications.

Sanitary Hex Head Screws

Bolt down equipment in food processing or sanitary areas while sealing out contaminants.

Sealing Hex Head Screws

An O-ring under the head prevents leaks and seals out contaminants.

Tension-Indicating Hex Head Screws

An indicator dot changes from red to black when the screw is properly tightened. If it comes loose, the dot changes back to red.

Hex Head Screws with Flat Washer

A freely rotating but permanently attached washer distributes pressure over a wider area than a flange, preventing damage to your material's surface.