Bowed Washers | McMaster-Carr

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	System of Measurement System of Measurement

	ID ID

	OD OD

	Material Material

Stainless Steel

	For Shaft Diameter For Shaft Diameter

	For Screw Size For Screw Size

	Thickness Thickness

0.023" to 0.027"

0.025" to 0.031"

0.029" to 0.033"

0.033" to 0.037"

0.036" to 0.042"

0.047" to 0.053"

0.048" to 0.052"

0.049" to 0.055"

0.050" to 0.070"

0.052" to 0.058"

0.059" to 0.065"

0.060" to 0.064"

0.070" to 0.076"

0.074" to 0.082"

0.075" to 0.081"

0.075" to 0.082"

0.091" to 0.099"

0.093" to 0.103"

0.095" to 0.101"

0.127" to 0.141"

0.131" to 0.145"

0.146" to 0.162"

0.163" to 0.181"

0.168" to 0.186"

0.182" to 0.202"

0.185" to 0.205"

0.200" to 0.222"

0.219" to 0.243"

0.238" to 0.263"

0.4 to 0.6 mm

0.5 to 0.7 mm

0.7 to 0.9 mm

0.8 to 1.0 mm

1.1 to 1.3 mm

1.5 to 1.7 mm

1.9 to 2.1 mm

2 to 2.4mm

2.3 to 2.7 mm

2.8 to 3.2 mm

3.3 to 3.7 mm

3.8 to 4.2 mm

4.8 to 5.2 mm

5.8 to 6.2 mm

	Disc Spring Type Disc Spring Type


Belleville	Curved

Wave	Finger

Notched

	Washer Type Washer Type


Spring Lock	Split Lock

Wave	Tab Lock

Curved

	Working Load Working Load

Less than 1,000 lbs.

1,000 to 1,999 lbs.

2,000 to 2,999 lbs.

3,000 to 9,999 lbs.

10,000 lbs. or greater

	Height Height

	Deflection @ Working Load Deflection @ Working Load

0.125" to 0.249"

0.25" to 0.499"

0.5" or greater

1 mm to 1.99 mm

2 mm to 2.99 mm

3 mm to 4.99 mm

5 mm or greater

	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

	For Hole Diameter For Hole Diameter

	Finish Finish

Black Phosphate

Yellow Zinc Plated

	Specifications Met Specifications Met

DIN

Mil. Spec.

	Overall Height Overall Height

	Split Lock Washer Type Split Lock Washer Type


Curved	Standard

	Spring Lock Washer Shape Spring Lock Washer Shape


Conical	Curved

	Hardness Hardness

	Serration Location Serration Location

	For Bearing Trade Number For Bearing Trade Number

607
608
609
623
624
625
626
627
629
634
635
636
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6017
6018
6020
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6215
6216
6217
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6903
EL3
EL4
EL5
EL7
EL8
EL9
R2
R3
R4
R4A
R6
R8
R10
R12
R14
R16
R18
R20
R22
R24

	Split Type Split Type

Overlapping Gap

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1,256 Products

Disc Springs

Mil. Spec. Belleville Disc Springs

These springs meet MIL-W-12133.

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.

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.

Stacked Wave Disc Springs

Stacked Wave Disc Springs

Multiple rows of waves allow these springs to handle higher loads than other wave disc springs within the same hole size.

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.

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.

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.

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.

Washers

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.

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.

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.

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.

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.

Metric Split Lock Washers

As you tighten a bolt, these metric washers flatten to add tension to the threaded joint and prevent loosening from small amounts of vibration.

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

Curved Washers

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

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