Coated Flat Washers | McMaster-Carr

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Finish

Corrosion-Resistant Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Screw Size

Material

Ferrite Ceramic

Silicon Carbide

Stainless Steel

Washer Type

OD

ID

System of Measurement

Fastener Strength Grade/Class

ASTM Grade A325

ASTM Grade A490

Thickness

0.005" to 0.024"

0.005" to 0.030"

0.010" to 0.015"

0.010" to 0.016"

0.010" to 0.020"

0.010" to 0.030"

0.012" to 0.018"

0.013" to 0.019"

0.013" to 0.020"

Washer Designation

General Purpose

Thread Size

Specifications Met

NEBS GR-63-CORE

OSHA Compliant 29 CFR 1910.242

Color

Fastener Strength Rating

Performance

Corrosion Resistant

Precision Adjust

Tension Indicating

Vibration Resistant

Weather Resistant

ASME Designation

Hardness

Shaft Diameter

DFARS Specialty Metals

Length

Overall Height

RoHS

Compliant with Exemptions

Width

REACH

Shape

Export Control Classification Number (ECCN)

How can we improve?

5,668 Products

Washers

General Purpose Washers

General Purpose Washers

Your go-to metal washer for every screw size

Oversized Washers

Oversized Washers

Exaggerated diameters and thicknesses to cover large holes or to create gaps

SAE Washers

Meet SAE sizing standards and typically have smaller diameters than USS washers

Mil. Spec. Washers

Mil. Spec. Washers

Adhere to U.S. military standards for material and construction

USS Washers

Meet USS sizing standards and typically have larger diameters than SAE washers

ASME Washers

Meet ASME standards and come in regular, narrow, and wide diameters

Undersized Washers

Undersized Washers

Pair with fasteners that have narrow heads, such as cheese and socket head screws

Structural Washers

Structural Washers

Distribute pressure under structural screws and nuts in columns, joists, and I-beams

Square Washers

Won't rotate as you fasten screws in slots and channels

Tension-Indicating Structural Washers

Tension-Indicating Structural Washers

Change color when you apply the correct tension to prevent overtightening

Reinforcing Sleeve Washers

Reinforcing Sleeve Washers

Keep soft materials from collapsing into the hole

Clipped Washers

Clipped Washers

Clipped on one side to fit in tight spots

Dished Washers

Cover oversized holes, such as the ends of pipe and tubes

Easy-Install Slotted Washers

Easy-Install Slotted Washers

Slip under nuts and screws without having to disassemble them

Washers for Square-Neck Bolts

Washers for Square-Neck Bolts

The square hole fits snugly around carriage, plow, and elevator bolts

Beveled Washers

Beveled Washers

The thickest washers we offer, designed for heavy duty wood construction

Magnetic Washers

Magnetic Washers

Stay in place on iron and steel surfaces during installation

Perforated Washers

Perforated Washers

Plaster flows through to form a bond between the washer and wall

Washers for Blind Rivets

Washers for Blind Rivets

Sized to fit around blind rivet diameters

Curved Washers

Sit flush against rails, columns, and other structural tubes

General Purpose Washer Assortments

General Purpose Washer Assortments

A collection of common washer sizes to fit the broadest range of applications

USS Washer Assortments

USS Washer Assortments

A collection of sizes that meet USS specifications—typically larger diameters than SAE washers

Washers for Foam Insulation

Washers for Foam Insulation

Prevent screws from crushing insulation board

SAE Washer Assortments

SAE Washer Assortments

A range of sizes that meet SAE standards—typically have smaller diameters than USS washers

Square Washers for Blind Rivets

Square Washers for Blind Rivets

Won't rotate as you fasten blind rivets in slots and channels

Oversized Washer Assortments

Oversized Washer Assortments

A collection of exaggerated sizes to cover large holes or to create gaps

Other Products

Lock Washers

Resist vibration to prevent fasteners from loosening

Leveling Washers

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Finishing Washers

Finishing Washers

Screw heads sit flush to prevent snagging and to create a neat, finished appearance

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

Magnets

Attract or repel metal objects to hang, secure, or position them

Retaining Rings

Retaining Rings

Hold components on a shaft

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

Tie-Down Washers

Tie-Down Washers

Angled sides align and hold tie-down straps

Cross-Bracing Washers

Cross-Bracing Washers

Connect cross-bracing rods or cables to structural beams; also known as hillside washers

Fastener Assortments

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

Unthreaded Inserts

Unthreaded Inserts

Reinforce, align, and adjust joints as you tighten a fastener

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

Tag Rings

Loop onto tags to attach them to lanyards, key rings, and other objects

Webbing Guides

Prevent webbing from twisting and use as anchor points; also known as footman's loops

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Blowguns

Direct a stream of air to clean equipment, parts, and spaces

Strainers

Install next to valves and pumps to catch debris in your line

Parts Baskets

Contain parts for cleaning and moving them in and out of washers

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

Glassware Rinsers

Glassware Rinsers

Rinse the inside of glasses, tubes, or beakers with a simple press

Wire Brushes

Scrub by hand or connect to power tools to clean, polish, deburr, and remove rust

Air Nozzles

Blow concentrated air for cleaning, drying, cooling, and ejecting parts

Siphon Guns

Spray liquid and air at the same time to produce a mist of liquids or chemicals

Squeegees

Wipe liquids off of windows, floors and other surfaces

Pressure Washer Guns

Pressure Washer Guns

Control the flow of water sprayed from a pressure washer

Wash Gun Nozzle Extensions

Wash Gun Nozzle Extensions

Attach to your wash gun nozzle to clean places out of arm's reach

Scrub Brushes

Everyday scrub brushes, scrub brushes with a handle, and drill-operated scrub brushes

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