Serrated-Flange Screws | McMaster-Carr

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	Locking Type Locking Type	Show

Serrations

	Locking Type Locking Type	Hide

Thread Locker

Serrations

Lock Washer

Without Thread Locker

Wire

Cotter Pin

Expanding Sleeve

	Screw Features Screw Features

	Flanged

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Pitch Thread Pitch

	Length Length

	Head Type Head Type


Socket	Hex

	Material Material

Stainless Steel

Steel

	Finish Finish

Black Oxide

Black Phosphate

Corrosion-Resistant-Coated

Ultra-Corrosion-Resistant
Coated

Zinc Plated

Zinc Yellow-Chromate Plated

	Threading Threading

	Fully Threaded
	Partially Threaded

	Fastener Strength Grade/Class Fastener Strength Grade/Class


Class 8.8	Grade 5

Grade 8

	Drive Style Drive Style


External Hex	Hex

Slotted	Torx

	Thread Direction Thread Direction

	Right Hand

	Head Width Head Width

	Head Height Head Height

	Flange Diameter Flange Diameter

	Thread Type Thread Type

Metric

UNC

UNF

	Head Diameter Head Diameter

	Thread Spacing Thread Spacing

Coarse

Fine

	Tensile Strength Tensile Strength

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

RoHS Compliant

	Thread Fit Thread Fit

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

REACH Compliant

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About Hex Head Screws and Bolts

Serrated-Flange Socket Head Screws

Serrations under the head grip the material's surface for mild vibration resistance. The flange distributes pressure across the material's surface, eliminating the need for a washer.

Medium-Strength Grade 5 Steel
Serrated-Flange Hex Head Screws

Made from Grade 5 steel, these screws are suitable for fastening most machinery and equipment. Serrations under the flange provide mild vibration resistance.

Medium-Strength Metric Class 8.8 Steel
Serrated-Flange Hex Head Screws

These metric screws are suitable for fastening most machinery and equipment. They have a serrated flange that helps prevent loosening from vibration.

High-Strength Metric Steel
Serrated-Flange Hex Head Screws

Choose these metric screws for high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are about 10% stronger than medium-strength steel screws. Their serrated flange helps to resist vibration.

High-Strength Grade 8 Steel
Serrated-Flange Hex Head Screws

About 20% stronger than medium-strength steel screws, these Grade 8 steel screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. Serrations under the flange provide mild vibration resistance.

18-8 Stainless Steel Serrated-Flange Hex Head Screws

Made from 18-8 stainless steel, these screws have good chemical resistance. Their flange is serrated to help prevent loosening from vibration.

Super-Corrosion-Resistant 316 Stainless
Steel Serrated-Flange Hex Head Screws

More corrosion resistant than 18-8 stainless steel screws, these 316 stainless steel screws have excellent resistance to chemicals and salt water. A serrated flange provides mild vibration resistance.

Extra-Wide Serrated-Flange Hex Head Screws

These screws have a flange that's at least 10% larger than a standard flange for more gripping power. Serrations under the head provide mild vibration resistance.

Vibration-Resistant Serrated-Flange
Piercing Screws for Sheet Metal

Serrations under the head act as a brake to prevent over-tightening and damaging threads.

Strip-Resistant Drilling Screws for Metal

Serrations under the head act as a brake to prevent overtightening and damaging threads.

Steel Hex Head Thread-Cutting Screws for Metal

These steel screws are zinc plated to resist corrosion in wet environments.

About Hex Head Screws and Bolts

Screws and Bolts

Serrated-Flange Socket Head Screws

Medium-Strength Grade 5 SteelSerrated-Flange Hex Head Screws

Medium-Strength Metric Class 8.8 SteelSerrated-Flange Hex Head Screws

High-Strength Metric SteelSerrated-Flange Hex Head Screws

High-Strength Grade 8 SteelSerrated-Flange Hex Head Screws