Spring Washers | McMaster-Carr

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	Material Material

Stainless
Steel

	System of Measurement System of Measurement

	ID ID

	OD OD

	For Screw Size For Screw Size

	For Shaft Diameter For Shaft Diameter

	Washer Type Washer Type


Split Lock	Spring Lock

Wave	Beveled

Tooth Lock	Countersunk

Tab Lock	Wedge Lock

	Thickness Thickness

0.010" to 0.013"

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"

0.016" to 0.022"

0.017" to 0.021"

0.018" to 0.023"

0.018" to 0.024"

0.020" to 0.025"

0.020" to 0.027"

0.022" to 0.032"

0.023" to 0.027"

0.023" to 0.028"

0.023" to 0.033"

0.025" to 0.031"

0.025" to 0.035"

0.027" to 0.031"

0.028" to 0.034"

0.029" to 0.033"

0.030" to 0.040"

0.032" to 0.040"

0.033" to 0.037"

0.033" to 0.043"

0.034" to 0.044"

0.036" to 0.042"

0.037" to 0.041"

0.037" to 0.045"

0.042" to 0.050"

0.043" to 0.047"

0.043" to 0.053"

0.047" to 0.053"

0.047" to 0.055"

0.048" to 0.052"

0.049" to 0.055"

0.050" to 0.060"

0.052" to 0.058"

0.052" to 0.060"

0.059" to 0.065"

0.059" to 0.067"

0.060" to 0.064"

0.062" to 0.077"

0.070" to 0.076"

0.070" to 0.090"

0.074" to 0.082"

0.075" to 0.081"

0.075" to 0.082"

0.078" to 0.097"

0.080" to 0.100"

0.091" to 0.099"

0.093" to 0.103"

0.094" to 0.115"

0.095" to 0.101"

0.110" to 0.130"

0.120" to 0.140"

0.125" to 0.151"

0.127" to 0.141"

0.131" to 0.145"

0.146" to 0.162"

0.156" to 0.189"

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"

0.2 to 0.4 mm

0.2 to 0.5 mm

0.3 to 0.5 mm

0.4 to 0.6 mm

0.5 to 0.7 mm

0.6 to 0.8 mm

0.7 to 0.9 mm

0.8 to 1.0 mm

0.9 to 1.1 mm

0.9 to 1.2 mm

1.0 to 1.4 mm

1.1 to 1.3 mm

1.2 to 1.5 mm

1.2 to 1.6 mm

1.3 to 1.6 mm

1.4 to 1.6 mm

1.5 to 1.7 mm

1.900 to 2.1mm

2.0 to 2.4 mm

2.3 to 2.7 mm

2.8 to 3.2 mm

3.3 to 3.7 mm

3.800 to 4.2mm

4.3 to 4.7 mm

4.800 to 5.2mm

5.8 to 6.2 mm

	Height Height

	Disc Spring Type Disc Spring Type


Belleville	Wave

Curved	Finger

Notched	Flat

	Working Load Working Load

Less than 1,000 lbs.

1,000 to 9,999 lbs.

10,000 to 19,999 lbs.

20,000 to 29,999 lbs.

30,000 lbs. or greater

	Deflection @ Working Load Deflection @ Working Load

Less than 0.125"

0.125" to 0.249"

0.25" to 0.499"

5 mm to 9.99 mm

10 mm to 19.99 mm

20 mm to 24.99 mm

25 mm or greater

	Split Lock Washer Type Split Lock Washer Type


Standard	Curved

Wave

	Flat Load Flat Load

Less than 1,000 lbs.

1,000 to 9,999 lbs.

10,000 to 19,999 lbs.

20,000 to 29,999 lbs.

30,000 lbs. or greater

	Specifications Met Specifications Met

DIN

Mil. Spec.

NAS

	Compressed Height @ Working Load Compressed Height @ Working Load

	For Hole Diameter For Hole Diameter

	Finish Finish

Black Phosphate

Hot-Dipped Galvanized

Yellow Zinc Plated

Zinc Yellow-Chromate Plated

Zinc-Aluminum Coated

	Hardness Hardness

	Spring Lock Washer Shape Spring Lock Washer Shape


Conical	Curved

	Overall Height Overall Height

	Tooth Location Tooth Location

	External
	Internal
	Internal/External

	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

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4,258 Products

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.

Mil. Spec. Belleville Disc Springs

These springs meet MIL-W-12133.

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.

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.

Stacked Wave Disc Springs

Stacked Wave Disc Springs

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

Corrosion-Resistant
Stacked 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.

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.

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.

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.

Flat Disc Springs

These flat rubber springs handle heavy loads, similar to Belleville disc springs, and resist oxidation, oil, and abrasion.

Lock Washers

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.

Split Lock Washers

As a screw is tightened, these washers flatten to add tension to the joint and prevent loosening from small amounts of vibration.

Mil. Spec. Split Lock Washers

Choose these washers for their adherence to strict military standards for material and construction.

Metric Split Lock Washers
for Socket Head Screws

Split Lock Washers for
Socket Head Screws

Oversized Split Lock Washers

Compared to standard split lock washers, these are thicker and have larger outside diameters.

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.

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 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.

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.

Metric External-Tooth Lock Washers

Teeth on the outside edge of these metric washers bite into the screw head and joint for a tight grip.

External-Tooth Lock Washers

Teeth on the outside edge of the washer bite into the screw head and joint for a tight grip.

Mil. Spec. External-Tooth
Lock Washers

Choose these washers for their adherence to strict military standards for material and construction.

Countersunk External-Tooth
Lock Washers

The teeth on these washers firmly grip heads of 82° flat head countersunk screws.

Tight-Grip External-Tooth
Lock Washers

The teeth on these washers bite further into the screw head and joint than standard external-tooth washers to provide a stronger hold.

Internal-Tooth Lock Washers

Internal teeth dig into the screw head while the smooth outside edge won't snag objects. Use with fasteners that have small heads, such as fillister and cheese head screws.

Metric Internal-Tooth Lock Washers

Internal teeth dig into the screw head while the smooth outside edge won't snag objects. Use with metric fasteners that have small heads, such as fillister and cheese head screws.

Mil. Spec. Internal-Tooth
Lock Washers

Choose these washers for their adherence to strict military standards for material and construction.

Internal-Tooth Lock
Washers for Soft Material

Slightly domed with an oversized outside diameter, these washers distribute your fastener's load over a larger surface area than other internal-tooth lock washers to limit damage to soft material.

Internal-/External-Tooth
Lock Washers

The combination of internal and external teeth boosts gripping power to maintain a tight hold and provide more vibration resistance than other tooth lock washers. Use with fasteners that have heads large enough to make contact with the external teeth, such as pan, button, and binding head screws.

Wedge Lock Washers

Also known as NORD-LOCK® washers, these two-piece washers provide more locking power than split, tooth, and spring lock washers. Wedges on the inside lock the two pieces together, and serrations on the exterior grip surfaces to resist loosening from high vibration and shifting.

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.

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.

Triple-Wave Washers

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

Lock Washer Assortments

Split Lock Washer Assortments

Split Lock Washer Assortments

As a screw is tightened, these washers flatten to add tension to the joint and prevent loosening from small amounts of vibration.

Tooth Lock Washer Assortments

Tooth Lock Washer Assortments

Teeth bite into the joint for a tighter grip than split lock washers.

Faucet Washers

Faucet Washers

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