SAE Bolts | McMaster-Carr

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	System of Measurement System of Measurement

	Thread Size Thread Size

	Length Length

5 3/4" to 24"

6 1/4" to 24"

	Fastener Strength Grade/Class Fastener Strength Grade/Class


Grade 2	Grade 5

Grade 8	Class 10.9

	Threading Threading

	Fully Threaded
	Partially Threaded

	Head Type Head Type


Hex	Rounded

12-Point	Flat

Square	Hook

Oval

	Finish Finish

Zinc Yellow-Chromate Plated

Black Phosphate

Zinc-Aluminum Coated

Black Ultra-Corrosion-
Resistant Coated

Hot-Dipped Galvanized

	Head Width Head Width

	Head Height Head Height

	Thread Direction Thread Direction


Right Hand	Left Hand

	Drive Style Drive Style


External Hex	External 12-Point	External Square

	Thread Type Thread Type

	Thread Pitch Thread Pitch

	Tensile Strength Tensile Strength

	Thread Spacing Thread Spacing

	Thread Fit Thread Fit

	Specifications Met Specifications Met

SAE

IFI

Mil. Spec.

	Head Diameter Head Diameter

	Neck Type Neck Type


Square	Knurled

Key Locking

	Hardness Hardness

	Minimum Thread Length Minimum Thread Length

	Screw Size Screw Size

	Flange Diameter Flange Diameter

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2,732 Products

Hex Head Screws

High-Strength Steel Hex Head Screws

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.

Medium-Strength Steel
Hex Head Screws

Medium-Strength Steel Hex Head Screws

These screws are suitable for fastening most machinery and equipment.

Low-Strength Steel Hex Head 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.

Flanged Hex Head Screws

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.

Vibration-Resistant Hex Head Screws

Vibration-Resistant Hex Head Screws

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

Other SAE Bolts

Carriage Bolts

Carriage Bolts

Carriage bolts have a smooth, rounded head for a finished look. The neck shape keeps them from turning when tightening a nut.

12-Point Screws

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.

Plow Bolts

Plow Bolts

Used on heavy equipment, such as plows, these bolts have a smooth head that's angled underneath to sit flush within countersunk holes. The neck shape keeps them from turning when tightening a nut.

Square Head Screws

Square Head Screws

Large flat sides make these screws easy to grip with a wrench and keep them from rotating in square holes.

Tapping, Wood, and Drywall Screws

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

Hold-Down Bolts

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