McMaster-Carr

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	Material Material	Show

Aluminum

	Material Material	Hide

	System of Measurement System of Measurement

Inch

Metric

	For Screw Size For Screw Size

	OD OD

	ID ID

	Washer Type Washer Type


Flat	Split Lock

Metal Bonded	Countersunk

Leveling for I- Beams	Standard

	Thickness Thickness

0.005"

0.008"

0.01"

0.013" to 0.019"

0.014" to 0.018"

0.016"

0.018" to 0.023"

0.02"

0.024" to 0.038"

0.028" to 0.036"

0.030" to 0.055"

0.048" to 0.054"

0.051" to 0.080"

0.052" to 0.072"

0.055" to 0.065"

0.056" to 0.062"

0.057" to 0.067"

0.057" to 0.069"

0.058" to 0.068"

0.059" to 0.069"

0.059" to 0.071"

0.061" to 0.063"

0.062"

0.063"

0.068" to 0.088"

0.068" to 0.095"

0.073" to 0.078"

0.078"

0.080" to 0.100"

0.081" to 0.101"

0.083" to 0.097"

0.090" to 0.120"

0.094"

0.098" to 0.106"

0.123" to 0.128"

0.2 to 0.4 mm

0.4 to 0.6 mm

0.7 to 0.9 mm

0.8 to 1.2 mm

0.9 to 1.1 mm

1.3 to 1.7 mm

1.4 to 1.8 mm

1.8 to 2.2 mm

2.3 to 2.7 mm

2.7 to 3.3 mm

	Length Length

	Hardness Hardness

	Shape Shape


Ring	Round

Made to Order

	Specifications Met Specifications Met

AMS

ASME

ASTM

DIN

ISO

ISO 15981

Mil. Spec.

NAS

OSHA

	Tensile Strength Tensile Strength

	Finish Finish

Anodized

Yellow-Chromate Plated

	For Rivet Diameter For Rivet Diameter

	Color Color

	Black

	Seal Material Seal Material

Rubber

	Magnetic Properties Magnetic Properties

Nonmagnetic

	Airflow Pattern Airflow Pattern

Circular

Focused

Wide

	Individual/Set Individual/Set

Individual

	Seal Hardness Seal Hardness

Durometer 65A

	Maximum Temperature Maximum Temperature

Less than 250° F

250° to 299° F

300° to 499° F

	Airflow Slot Width Airflow Slot Width

	For Use In For Use In

Plastic

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1,570 Products

Washers

General Purpose Washers

Washers for Blind Rivets

Also known as backup washers, these are for use with blind rivets for extra support when fastening into soft material.

Countersunk Washers

Flat and oval head screws sit flush within these washers for a neat, finished appearance.

Lock Washers

These washers have a locking feature to resist loosening from vibration.

Sealing Washers

Prevent fluids from leaking around fasteners.

Leveling and Wave Washers

Compensate for tolerance variations and uneven surfaces.

Other Washers

Shims

Use shims for precise aligning and leveling.

Unthreaded Spacers

Also known as clearance spacers, these create separation between flat surfaces.

Unthreaded Inserts for Plastic

Also known as compression limiters, these inserts prevent screws from loosening even if the surrounding plastic expands or shrinks when the screw is tightened.

Aluminum Domed Head Blind Rivets

Made of aluminum, these blind rivets are lightweight and corrosion resistant. The domed head gives your project a finished appearance.

Pressure Washer Extension Wands

To clean hard-to-reach areas, attach these wands to your pressure washer.

Blowguns, Air Nozzles, and Air Knives

Fabric Grommets

Press these grommets into a hole you've already cut. They strengthen and prevent holes from fraying in tarps, covers, and curtains. They also provide a way to run rope and cable through your material.

Strut Channel Washers

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