McMaster-Carr

Search Results

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Pitch Thread Pitch

	Length Length

	Fastener Strength Grade/Class Fastener Strength Grade/Class


Grade 5	Grade 8

Class 8.8	Grade 9

Class 10.9	Class 12.9

Grade A325	Grade B7

Grade A490

	Threading Threading

	Fully Threaded
	Partially Threaded

	Material Material

Alloy Steel

Spring Steel

Steel

	Finish Finish

Black Oxide

Black Phosphate

Black Ultra-Corrosion-
Resistant Coated

Hot-Dipped Galvanized

Ultra-Corrosion-Resistant
Coated

Zinc Plated

Zinc Yellow-Chromate Plated

Zinc-Aluminum Coated

	Head Width Head Width

	Head Height Head Height

	Drive Style Drive Style


External Hex	Phillips	Slotted

	Thread Type Thread Type

	Thread Direction Thread Direction


Right Hand	Left Hand

	Thread Spacing Thread Spacing

Coarse

Fine

Extra Fine

	Tensile Strength Tensile Strength

Less than 100,000 psi

100,000 to 109,999 psi

110,000 to 129,999 psi

130,000 to 159,999 psi

160,000 psi or greater

	Screw Size Screw Size

	Thread Fit Thread Fit

	Specifications Met Specifications Met

ASME

SAE

DIN

ISO

ASTM

IFI

Mil. Spec.

JIS

NAS

	Screw Features Screw Features


Flanged	With Washer

Tension Indicating

	Tip Type Tip Type


Drilling	Pointed

Blunt	Extended

	Minimum Thread Length Minimum Thread Length

	Hardness Hardness

	For Use In For Use In

5,061 Products

Screws and Bolts

Medium-Strength Steel
Hex Head Screws

These screws are suitable for fastening most machinery and equipment.

High-Strength Steel Hex Head Screws

Use these screws in high-stress applications such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws.

Low-Strength Steel Hex Head Screws

About half as strong as medium-strength steel screws, these screws can be used for light duty fastening applications, such as securing access panels.

Extreme-Strength Steel
Hex Head Screws

Our strongest screws, these are at least 10% stronger than high-strength steel screws and often used in heavy duty applications such as stamping and earth-moving equipment.

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.

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.

Vibration-Resistant Hex Head Screws

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

Tight-Spot Hex Head Screws

A high-strength alternative to blind rivets, these Class 8.8 steel screws can be used when only one side of the material is accessible. When the screw is tightened, the attached nut expands the sleeve to create a strong clamping force on the back of the material.

Tapping, Wood, and Drywall Screws

While other screws and bolts require holes with threads, tapping screws create their own threads.

Shoulder Screws

A cylindrical shoulder under the head allows parts to rotate around and slide along its length, so these screws are often used to guide and align components.

Set Screws

Unlike screws that hold materials together with threads, set screws exert pressure at the tip to hold objects in place.

Fastener Assortments

Screw Assortments

Terms and Conditions and Privacy Policy