Bowed Washers | McMaster-Carr

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

REACH Compliant

	Overall Height Overall Height

0.017"

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Finish Finish

	Flat Load Flat Load

Less than 1,000 lbs.

1,000 to 1,999 lbs.

2,000 to 9,999 lbs.

10,000 to 19,999 lbs.

20,000 lbs. or greater

Not Rated

	Hardness Hardness

	Specifications Met Specifications Met

DIN

Mil. Spec.

	Spring Lock Washer Shape Spring Lock Washer Shape


Conical	Curved

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2,154 Products

Washers

Belleville Spring Lock Washers

Also known as conical washers, these have a slightly cupped shape that gives them spring-like flexibility to grip tighter than split and tooth lock washers.

Metric Spring Lock Washers

The arched shape of these washers presses up against a bolt and down against a nut to prevent loosening from wear, vibration, or temperature changes.

Spring Lock Washers for Slotted Bearing Nuts

Designed for use with bearing nuts, these lock washers have a conical shape that presses like a spring against bearings, bushings, gears, and pulleys to hold them in place on your threaded shaft or spindle.

Spring Lock Washers for Plastic Screws

Designed for use with plastic screws, these acetal washers are good electrical insulators. They are excellent for use under water and in rotating assemblies.

Belleville Spring Lock Washers for Socket Head Screws

These washers have smaller outside diameters than standard spring lock washers to fit neatly under socket head cap screws.

Metric Split Lock Washers

Metric Tab Lock Washers

Bend the tab of these metric lock washers against the flats of a hex nut or bolt head to prevent the fastener and washer from turning and loosening due to vibration, wear, or changes in temperature.

Triple-Wave Washers

With three points of surface contact, these washers provide more stability than single-wave washers.

Metric Single-Wave Washers

These curved, flexible washers act like springs to compensate for tolerance variations and uneven surfaces.

Single-Wave Washers

These curved, flexible washers act like springs to compensate for tolerance variations and uneven surfaces.

Curved Washers

Also known as saddle washers, these curved washers fit round surfaces such as tubes and pipe.

Disc Springs

Belleville Disc Springs

Use these steel springs in noncorrosive environments.

Corrosion-Resistant Belleville Disc Springs

Made of stainless steel, these springs are more corrosion resistant than steel springs. Use them on shafts, bolts, and the ends of valves to maintain tension and separate components.

Extreme-Temperature Belleville Disc Springs

These springs withstand temperatures from -400° to 1100° F. All are 718 nickel, a high-strength, corrosion-resistant alloy that's also known as Inconel.

Belleville Disc Springs for Ball Bearings

Install these springs, also known as bearing preload washers, against ball bearings to reduce noise and unwanted movement along the shaft.

Belleville Disc Springs for Flange Bolts

Keep pipe flange connections sealed during demanding applications. When installed under flange bolt heads, these springs compensate for shock loads, vibration, and thermal expansion and contraction.

Mil. Spec. Belleville Disc Springs

These springs meet MIL-W-12133.

Curved Disc Springs

Use these high-carbon steel springs in noncorrosive environments.

Corrosion-Resistant Curved Disc Springs

Made of stainless steel, these springs are more corrosion resistant than steel springs.

Split Wave Disc Springs

A gap allows these springs to compress without widening, so they won't bind or deform when used inside a housing with tight clearance.

Wave Disc Springs

Use these high-carbon steel springs in noncorrosive environments.

Corrosion-Resistant Wave Disc Springs

Made of stainless steel, these springs are more corrosion resistant than steel wave disc springs.

Corrosion-Resistant Stacked Wave Disc Springs

Made of 17-7 PH stainless steel with multiple rows of waves, these springs are more corrosion resistant than steel springs and handle greater loads than standard wave disc springs.

Stacked Wave Disc Springs

Multiple rows of waves allow these springs to handle higher loads than standard wave disc springs.

Notched Disc Springs

Notches make these springs more flexible than Belleville disc springs and allow liquid to flow around the spring, even while it's in use.

Finger Disc Springs

Raised tabs, known as fingers, enable these springs to compress without widening, so they won't bind or deform in housings with little clearance. Use with ball bearings in precision and high-speed drive assemblies to reduce noise, vibration, and wear.