Serrated Lock Washers | McMaster-Carr

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Washer Type

Lock Washer Type

System of Measurement

Screw Size

Material

Phosphor Bronze

Stainless Steel

Tooth Location

Internal and External

OD

ID

Thickness

0.010" to 0.013"

0.010" to 0.015"

0.010" to 0.016"

0.012" to 0.018"

0.014" to 0.018"

0.014" to 0.020"

0.015" to 0.019"

0.016" to 0.018"

Finish

Black Zinc Plated

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Performance

Corrosion Resistant

Vibration Resistant

Thread Size

Specifications Met

Overall Height

Hardness

Rockwell C40 to Rockwell C50

Serration Location

DFARS Specialty Metals

RoHS

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

Height

Fastener Strength Grade/Class

Nut Type

Color

Width

How can we improve?

1,205 Products

Lock Washers

Tooth Lock

Tooth Lock Washers

Tooth Lock Washers

Grip tighter than split lock washers in applications with constant movement, such as conveyors

Mil. Spec. Tooth Lock Washers

Mil. Spec. Tooth Lock Washers

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

Countersunk Tooth Lock Washers

Countersunk Tooth Lock Washers

Grip flat- and oval-head screws for a secure hold without overtightening

Tooth Lock Washer Assortments

Tooth Lock Washer Assortments

Keep a collection of tooth lock washers on hand to work with a range of screw sizes

Domed Tooth Lock Washers

Domed Tooth Lock Washers

Spread pressure over a large area to limit damage to material

Wedge Lock

Extreme-Vibration-Resistant Wedge Lock Washers

Extreme-Vibration-Resistant Wedge Lock Washers

The tightest grip of all our washers for use on equipment with jarring starts and stops

Spring Lock

Heavy-Vibration-Resistant Spring Lock Washers

Heavy-Vibration-Resistant Spring Lock Washers

Won't loosen on equipment with constant, vigorous vibration; also known as Belleville washers

Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Fit neatly under screws with narrow heads; also known as Belleville washers

Wave Spring Lock Washers

Wave Spring Lock Washers

Keep bolted assemblies secure on slightly uneven surfaces

Curved Spring Lock Washers

Curved Spring Lock Washers

A step up from flat washers, these stop nuts and screws from loosening due to slight movement

Other Products

Bearing Lock Washers

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

Fastener Assortments

Fastener Assortments

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

Locknuts

Hold fasteners in place to prevent loosening from vibration

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