Lock Washers

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Lock washers are used for creating tight assemblies with ordinary fasteners. Raptor Supplies offers a wide range of lock washers from brands like Unistrut, ...Read more

StyleModelMPNPkg. Qty.
A0563605636100
RFQ
A0563905639100
RFQ
A0564005640100
RFQ
StyleModelMPNPkg. Qty.
A748617486150
RFQ
A748627486240
RFQ
A748637486330
RFQ
A748647486425
RFQ
A748657486520
RFQ
A748667486616
RFQ
A748687486810
RFQ
APPROVED VENDOR -

Grade 2 Steel Split Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessThickness ToleranceMin. ThicknessInside Dia. ToleranceOutside Dia. TolerancePricePkg. Qty.
AU37060.125.00011 1/4"0.312"1 1/4"0.312"0.312"0.312"1.254" to 1.28"2.036"€9.075
BU37025.031.00015/16"0.0781"5/16"0.078"0.078"0.078"0.314" to 0.322"0.583"€7.29100
StyleModelMPNPkg. Qty.
A337813378130
RFQ
A337833378320
RFQ
A337843378415
RFQ
APPROVED VENDOR -

Plain Grade 410 Stainless Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessColorThickness ToleranceRockwell HardnessMaterial Grade/classPricePkg. Qty.
AU53462.008.0001#20.01"#20.01"--C40Grade 410€7.4050
BU53462.009.0001#30.01"#30.01"--C40Grade 410€3.5950
CU53462.011.0001#40.012"#40.012"Silver0.012" to 0.018"C40 to C50Grade 410€3.0150
DU53462.013.0001#60.016"#60.016"Silver0.016" to 0.022"C40 to C50Grade 410€6.0350
EU53462.016.0001#80.018"#80.018"Silver0.018" to 0.023"C40 to C50Grade 410€9.2050
FU53462.019.0001#100.018"#100.018"Silver0.018" to 0.024"C40 to C50Grade 410€3.8550
GU53462.021.0001#120.02"#120.02"Silver0.02" to 0.027"C40 to C50Grade 410€4.4950
HU53462.050.00011/2"0.037"1/2"0.037"Black-0.004" to +0.004"Hrc40Grade 410€3.6010
IU53462.025.00011/4"0.023"1/4"0.023"--C40Grade 410€5.2650
JU53462.075.00013/4"0.047"3/4"0.047"Black-0.004" to +0.004"Hrc40Grade 410€4.845
KU53462.037.00013/8"0.032"3/8"0.032"--C40Grade 410€13.6250
LU53462.062.00015/8"0.042"----0.004" to +0.004"--€25.1210
MU53462.031.00015/16"0.028"5/16"0.028"--C40Grade 410€10.0050
NU53462.043.00017/16"0.032"7/16"0.032"--C40Grade 410€14.1325
APPROVED VENDOR -

Plain Grade A2 Stainless Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMaterial Grade/classMax. ThicknessDimensional StandardsLock Washer TypeClassPricePkg. Qty.
AM51458.020.0001M20.3 mmM218-80.3 mmDin 6797Internal Tooth LockNot Applicable€3.4950
BSIW7X0250-100P1M2.50.4 mm to 0.8 mmM2.5Ungraded0.8 mmDin 6797Internal Tooth LockNot Applicable€8.65100
BSIW7X0260-100P1M2.60.4 mm to 0.8 mmM2.6Ungraded0.8 mmDin 6797Internal Tooth LockNot Applicable€9.07100
CM51458.030.0001M30.4 mmM318-80.4 mmDin 6797Internal Tooth LockNot Applicable€2.5750
BSIW7X0350-100P1M3.50.5 mm to 1 mmM3.5Ungraded1 mmDin 6797Internal Tooth LockNot Applicable€9.37100
DM51458.040.0001M40.5 mmM418-80.5 mmDin 6797Internal Tooth LockNot Applicable€2.9450
EM51458.050.0001M50.6 mmM518-80.6 mmDin 6797Internal Tooth LockNot Applicable€2.7850
FM51458.060.0001M60.7 mmM618-80.7 mmDin 6797Internal Tooth LockNot Applicable€4.3950
GM51458.080.0001M80.8 mmM818-80.8 mmDin 6797Internal Tooth LockNot Applicable€5.8550
HM51458.100.0001M100.9 mmM1018-80.9 mmDin 6797Internal Tooth LockNot Applicable€7.4050
IM51458.120.0001M121 mmM1218-81 mmDin 6797 JInternal Tooth LockNot Applicable€4.7625
JM51458.140.0001M141 mmM1418-81 mmDin 6797Internal Tooth LockNot Applicable€6.6425
KM51458.160.0001M161.2 mmM1618-81.2 mmDin 6797 JInternal Tooth LockNot Applicable€4.3510
LM51458.200.0001M201.4 mmM2018-81.4 mmDin 6797Internal Tooth LockNot Applicable€4.545
APPROVED VENDOR -

Plain Grade A2 Stainless Steel External Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessHardnessRockwell HardnessDimensional StandardsMaterial Grade/classPricePkg. Qty.
AM51456.030.0001M30.4 mmM30.4 mmRockwell C40C40Din 679718-8€2.3450
BM51460.030.0001M30.4 mmM30.4 mm--Din 679818-8€2.8050
CM51456.040.0001M40.5 mmM40.5 mm--Din 679718-8€2.0250
DM51460.040.0001M40.5 mmM40.5 mm--Din 679818-8€1.9450
EM51460.051.0001M50.5 mmM50.5 mm--Din 6798 A18-8€7.8550
FM51460.050.0001M50.6 mmM50.6 mm--Din 679818-8€2.7450
GM51456.050.0001M50.6 mmM50.6 mm--Din 679718-8€3.7750
HM51456.060.0001M60.7 mmM60.7 mm--Din 679718-8€3.7950
IM51460.060.0001M60.7 mmM60.7 mm--Din 679818-8€6.3850
JM51456.080.0001M80.8 mmM80.8 mm--Din 679718-8€6.2050
KM51460.080.0001M80.8 mm------€5.9450
EM51460.082.0001M80.8 mmM80.8 mm--Din 6798 A18-8€7.8950
LM51456.100.0001M100.9 mmM100.9 mm--Din 679718-8€6.9350
EM51460.100.0001M100.9 mm to 2.7 mmM102.7 mm--Din 679818-8€6.9250
MM51456.120.0001M121 mmM121 mm--Din 679718-8€3.5725
NM51460.120.0001M121 mmM121 mmRockwell C38-C46C38 to C46Din 6798 A18-8€5.6725
OM51456.140.0001M141 mmM141 mm--Din 679718-8€5.3525
PM51456.160.0001M161.2 mm to 2.4 mmM162.4 mm--Din 679718-8€5.6310
EM51460.160.0001M161.2 mm to 3.6 mmM163.6 mm--Din 679818-8€4.2310
QM51460.200.0001M201.4 mmM201.4 mm--Din 679818-8€5.365
RM51460.240.0001M241.5 mmM241.5 mm--Din 679818-8€5.325
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Zinc Plated Steel Internal and External Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessMaterial Grade/classLock Washer TypeHardnessRockwell HardnessPricePkg. Qty.
AB37590.050.0001#40.052"------€3,848.246750
BB37590.037.0001#120.042"------€3,461.5613150
CU37590.050.00011/2"0.052"1/2"0.052"UngradedInternal And External Tooth LockRockwell C40-C50C40 to C50€14.1325
DU37590.037.00013/8"0.042"3/8"0.042"UngradedInternal And External Tooth LockRockwell C40-C50C40 to C50€12.8750
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Plain Grade A2 Stainless Steel Split Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessThickness ToleranceMin. ThicknessInside Dia. ToleranceHardnessPricePkg. Qty.
AM51450.020.0001M20.5 mmM20.5 mm-0.5 mm-Rockwell C38-C46€3.1350
BM51450.025.0001M2.50.6 mmM2.50.6 mm-0.6 mm-Rockwell C38-C46€3.1350
CM51450.026.0001M2.60.6 mmM2.60.6 mm-0.6 mm-Rockwell C46€2.9350
DM51390.030.0001M31 mmM31 mm-1 mm-Rockwell C40-C50€3.3850
EM51450.030.0001M30.8 mmM30.8 mm-0.8 mm-Rockwell C46€4.4250
FM51450.035.0001M3.50.8 mmM3.50.8 mm-0.8 mm-Rockwell C46€1.4850
GM51390.040.0001M41.2 mmM41.2 mm-1.2 mm-Rockwell C40-C50€3.0450
HM51450.040.0001M40.9 mmM40.9 mm-0.9 mm-Rockwell C35€5.0150
IM51390.050.0001M51.6 mmM51.6 mm-1.6 mm-Rockwell C40-C50€4.1550
JM51450.050.0001M51.2 mmM51.2 mm-1.2 mm-Rockwell C38-C46€4.5450
KM51450.060.0001M61.6 mmM61.7 mm-0.1 mm to +0.1 mm1.5 mm0.4 mmRockwell C35€3.2650
LM51390.060.0001M61.6 mmM61.6 mm-1.6 mm-Rockwell C40-C50€3.8650
MM51390.080.0001M82 mmM82 mm-2 mm-Rockwell C40-C50€4.8550
NM51450.080.0001M82 mmM82.1 mm-0.1 mm to +0.1 mm1.9 mm0.4 mmRockwell C35€4.8450
OM51390.100.0001M102.5 mmM102.5 mm-2.5 mm-Rockwell C40-C50€6.7950
PM51450.100.0001M102.2 mmM102.35 mm-0.15 mm to +0.15 mm2.05 mm0.5 mmRockwell C35€7.1650
QM51390.120.0001M122.5 mmM122.5 mm-2.5 mm--€5.1625
RM51450.120.0001M122.5 mmM122.65 mm-0.15 mm to +0.15 mm2.35 Mm0.5 mm-€6.0825
SM51450.140.0001M143 mmM143.15 mm-0.15 mm to +0.15 mm2.85 mm0.5 mmRockwell C35€9.7725
TM51450.160.0001M163.5 mmM163.7 mm-0.2 mm to +0.2 mm3.3 Mm0.8 mm-€4.5810
UM51390.160.0001M163.5 mmM163.5 mm-3.5 mm--€5.5410
VM51450.180.0001M183.5 mmM183.5 mm-3.5 mm-Rockwell C35€5.6710
WM51450.200.0001M204 mmM204 mm-4 mm--€4.785
XM51450.220.0001M224 mmM224 mm-4 mm-Rockwell C38-C46€5.655
YM51450.240.0001M245 mmM245 mm-5 mm-Rockwell C35€8.025
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Zinc Plated Steel External Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessThickness ToleranceLock Washer TypeHardnessRockwell HardnessPricePkg. Qty.
AB37420.013.0001#20.016"------€993.2290000
BB37420.016.0001#30.018"------€565.4950000
CB37420.031.0001#40.028"------€696.6722700
DB37420.062.0001#40.042"------€910.895000
EU37420.011.0001#40.018"#40.018"-External Tooth LockRockwell C40-C50C40 to C50€2.11100
FB37420.019.0001#40.018"------€890.7950000
GB37420.037.0001#50.032"------€885.9314450
HB37420.075.0001#60.047"------€899.603330
IU37420.013.0001#60.022"#60.022"-External Tooth LockRockwell C40-C50C40 to C50€1.79100
JB37420.043.0001#60.032"------€1,342.1612500
K6DZC4#60.022"#60.022"-0.006"External Tooth LockRockwell C40-C50C40 to C50€8.70100
LB37420.050.0001#80.037"------€703.446750
MU37420.016.0001#80.023"#80.023"-External Tooth LockRockwell C40-C50C40 to C50€1.91100
K6DZC5#80.023"#80.023"-0.005"External Tooth LockRockwell C40-C50C40 to C50€5.32100
NB37420.056.0001#100.037"------€1,297.306325
OU37420.019.0001#100.024"#100.024"-External Tooth LockRockwell C40-C50C40 to C50€1.98100
PB37420.011.0001#120.012"------€1,021.9390000
QU37420.050.00011/2"0.037"1/2"0.037"-External Tooth LockRockwell C40-C50C40 to C50€4.3025
RU37420.075.00013/4"0.047"3/4"0.047"-External Tooth LockRockwell C40-C50C40 to C50€5.0810
SU37420.037.00013/8"0.032"3/8"0.032"-External Tooth LockRockwell C40-C50C40 to C50€5.0950
TU37420.062.00015/8"0.042"5/8"0.042"-External Tooth LockRockwell C40-C50C40 to 50€3.5010
UU37420.031.00015/16"0.034"5/16"0.034"-External Tooth LockRockwell C40-C50C40 to C50€5.42100
VU37420.043.00017/16"0.032"7/16"0.032"-External Tooth LockRockwell C40-C50C40 to C50€3.0725
WU37420.056.00019/16"0.037"9/16"0.037"-External Tooth LockRockwell C40-C50C40 to C50€5.8825
XM37420.030.0001M30.4 mmM30.4 mm-External Tooth LockRockwell C38-C46C38 to C46€6.93100
APPROVED VENDOR -

Zinc Plated Grade 2 Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessThickness ToleranceHardnessRockwell HardnessMaterial Grade/classPricePkg. Qty.
AU37480.100.00011"0.059"1"0.059"0.059" to 0.067"Rockwell C38-C46C38 to C46Grade 2€8.475
BU37480.025.00011/4"0.028"1/4"0.028"0.023" to 0.028"Rockwell C40-C50C40 to C50Grade 2€5.05100
CU37480.087.00017/8"0.052"7/8"0.052"0.052" to 0.06"Rockwell C38-C46C38 to C46Grade 2€7.435
DU37480.043.00017/16"0.032"7/16"0.032"0.032" to 0.04"Rockwell C40-C50C40 to C50Grade 2€6.5925
EU37480.056.00019/16"0.037"9/16"0.037"0.037" to 0.045"Rockwell C38-C46C38 to C46Grade 2€12.6625
APPROVED VENDOR -

Plain Grade 410 Stainless Steel External Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessThickness ToleranceHardnessRockwell HardnessDimensional StandardsPricePkg. Qty.
A1NY46#40.018"#40.018"0.012" to 0.018"Rockwell C40C40ANSI B18.22.1-1
RFQ
BU53460.011.0001#40.012"#40.012"0.012" to 0.018"Rockwell C40-C50C40 to C50Asme B18.21.1€2.3950
CU53460.013.0001#60.016"#60.016"0.016" to 0.022"Rockwell C40C40 to C50Asme B18.21.1€2.0150
DU53460.016.0001#80.018"#80.018"-Rockwell C40C40Asme B18.21.1€3.1750
EU53460.019.0001#100.018 ft.---Rockwell C40--€4.5550
FU53460.050.00011/2"0.037"---Rockwell C40--€3.6510
GU53460.025.00011/4"0.023"1/4"0.023"0.023" to 0.028"Rockwell C40C40 to C50Asme B18.21.1€10.2350
HU53460.075.00013/4"0.047"---Rockwell C40--€6.085
IU53460.037.00013/8"1/25"--0.032" to 0.04"Rockwell C40--€15.3750
JU53460.062.00015/8"0.042"5/8"0.042"-Rockwell C40C40Asme B18.21.1€16.3610
KU53460.031.00015/16"0.028"5/16"0.028"-Rockwell C40C40Asme B18.21.1€8.7750
LU53460.043.00017/16"0.032"7/16"0.032"0.032" to 0.04"Rockwell C40C40 to C50Asme B18.21.1€11.2625
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Plain Phosphor Bronze External Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessThickness ToleranceHardnessRockwell HardnessFor Use WithPricePkg. Qty.
AB50450.011.0001#20.012"------€7,763.8690000
BU50450.011.0001#40.018"#40.018"0.012" to 0.018"Rockwell B90B90Small Screw Heads€14.13100
CB50450.013.0001#40.016"------€7,821.4190000
DU50450.013.0001#60.022"#60.022"0.016" to 0.022"Rockwell B90B90Small Screw Heads€10.59100
EB50450.016.0001#60.018"------€9,174.0050000
AB50450.037.0001#60.032"------€7,505.1814450
FU50450.016.0001#80.023"#80.023"0.018" to 0.023"Rockwell B90B90Small Screw Heads€28.27100
AB50450.019.0001#80.018"------€10,817.0150000
GU50450.019.0001#100.024"#100.024"0.018" to 0.024"Rockwell B90B90Small Screw Heads€35.64100
HB50450.025.0001#100.023"------€7,886.7332200
AB50450.050.0001#100.037"------€10,985.726750
IU50450.050.00011/2"0.045"1/2"0.045"0.037" to 0.045"Rockwell B90B90Large Round, Pan, Or Binding Head Screws€59.9325
JU50450.025.00011/4"0.028"1/4"0.028"0.023" to 0.028"Rockwell B90B90Large Round, Pan, Or Binding Head Screws€33.65100
KU50450.037.00013/8"0.032"3/8"0.032"-Rockwell C50C50-€32.2650
KU50450.031.00015/16"0.028"5/16"0.028"-Rockwell C50C50-€33.86100
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Plain Phosphor Bronze Internal Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessThickness ToleranceHardnessRockwell HardnessFor Use WithPricePkg. Qty.
AU50462.008.0001#20.015"#20.015"0.01" to 0.016"Rockwell B90B90Small Screw Heads€7.62100
BB50462.037.0001#20.032"------€7,400.0913150
CB50462.008.0001#20.01"------€6,289.9190000
DB50462.050.0001#30.037"------€8,020.546750
EB50462.011.0001#30.012"------€8,039.1290000
FU50462.011.0001#40.018"#40.018"0.012" to 0.018"Rockwell B90B90Small Screw Heads€15.58100
GB50462.013.0001#40.016"------€8,859.3490000
HB50462.016.0001#60.018"------€5,237.3850000
IU50462.013.0001#60.02"#60.021"0.016" to 0.022"Rockwell B90B90Small Screw Heads€14.13100
JU50462.016.0001#80.023"#80.023"0.018" to 0.023"Rockwell B90B90Small Screw Heads€14.82100
KB50462.019.0001#80.018"------€10,826.4050000
LU50462.019.0001#100.024"#100.024"0.018" to 0.024"Rockwell B90B90Small Screw Heads€35.60100
MB50462.031.0001#120.028"------€11,134.7317200
NU50462.050.00011/2"0.045"1/2"0.045"0.037" to 0.045"Rockwell B90B90Large Round, Pan, Or Binding Head Screws€35.4425
OU50462.025.00011/4"0.023"-0.023"0.023" to 0.028"Rockwell B90B90Large Round, Pan, Or Binding Head Screws€39.86100
PB50462.025.00011/4"0.023"------€7,961.5337000
QU50462.037.00013/8"1/25"3/8"1/25"0.032" to 0.04"Rockwell B90B90Large Round, Pan, Or Binding Head Screws€52.4450
RU50462.031.00015/16"0.028"5/16"0.028"-Rockwell C50C50-€74.29100
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Plain Silicon Bronze Split Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessThickness ToleranceMin. ThicknessDimensional StandardsMaterial Grade/classPricePkg. Qty.
AB43150.025.0001#41/16"------€2,766.659300
B1NU87#40.025"#40.025"+0.025"0.025"ANSI B18.22.1Ungraded€6.94100
C1NU88#60.031"#60.031"+0.031"0.031"ANSI B18.22.1Ungraded€10.50100
DU43150.013.0001#60.031"#60.031"Not Rated0.031"Asme B18.21.1Ungraded€10.42100
EB43150.037.0001#63/32"------€2,322.993400
DU43150.016.0001#81/25"#81/25"-1/25"Asme B18.21.1Ungraded€20.99100
FB43150.050.0001#81/8"------€4,214.231650
GB43150.019.0001#80.047"------€6,087.7430300
HU43150.019.0001#100.047"#100.047"-0.047"Asme B18.21.1Ungraded€60.45100
IB43150.021.0001#100.056"------€7,534.6616600
JB43150.062.0001#100.156"------€4,618.48900
DU43150.021.0001#120.056"#120.056"-0.056"Asme B18.21.1Ungraded€55.14100
DU43150.050.00011/2"1/8"1/2"1/8"-1/8"Asme B18.21.1Ungraded€50.4925
DU43150.025.00011/4"1/16"1/4"0.062"-0.062"Asme B18.21.1Ungraded€80.48100
KU43150.037.00013/8"3/32"3/8"0.094"-0.094"Asme B18.21.1Ungraded€83.3250
DU43150.062.00015/8"0.156"5/8"0.156"-0.156"Asme B18.21.1Ungraded€58.4210
LU43150.075.00015/8"0.156"3/4"0.188"+0.188"0.188"Asme B18.21.1Ungraded€56.5410
DU43150.031.00015/16"0.0781"5/16"0.078"-0.078"Asme B18.21.1Ungraded€61.90100
APPROVED VENDOR -

Zinc Plated Grade 2 Steel External Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessThickness ToleranceHardnessRockwell HardnessMaterial Grade/classPricePkg. Qty.
AU37420.021.0001#120.027"#120.027"0.02" to 0.027"Rockwell C40-C50C40 to C50Grade 2€6.27100
BU37420.100.00011"0.059"1"0.059"0.059" to 0.067"Rockwell C38-C46C38 to C46Grade 2€9.045
CU37420.025.00011/4"0.028"1/4"0.028"0.023" to 0.028"Rockwell C40-C50C40 to C50Grade 2€6.03100
DU37420.087.00017/8"0.052"7/8"0.052"0.052" to 0.06"Rockwell C38-C46C38 to C46Grade 2€6.305
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Galvanized Steel Split Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessMin. ThicknessHardnessRockwell HardnessMaterial Grade/classPricePkg. Qty.
AB37025.150.0001#43/8"------€350.7875
BB37025.043.0001#40.109"------€325.942325
CB37025.175.0001#60.389"------€490.7765
DB37025.112.0001#80.281"------€389.95175
EB37025.200.0001#80.422"------€493.5845
FB37025.250.0001#1011/25"------€418.2130
GB37025.137.0001#120.344"------€550.39100
HB37025.087.0001#120.219"------€271.54350
IU37025.125.00011 1/4"0.312"1 1/4"0.312"0.312"Rockwell C40-C50-Ungraded€16.345
JU37025.112.00011 1/8"0.281"1 1/8"0.281"0.281"Rockwell C38-C46C38Ungraded€14.895
KU37025.100.00011"1/4"1"1/4"1/4"Rockwell C38-C46C38Ungraded€6.205
LU37025.050.00011/2"1/8"1/2"1/8"1/8"Rockwell C38-C46C38Ungraded€4.5625
MU37025.025.00011/4"1/16"1/4"0.062"0.062"Rockwell C35C35Ungraded€3.87100
NU37025.075.00013/4"3/16"3/4"0.188"0.188"Rockwell C32C32Ungraded€4.3010
OU37025.037.00013/8"3/32"3/8"0.094"0.094"Rockwell C35C35Ungraded€5.8850
PU37025.062.00015/8"0.156"5/8"0.156"0.156"Rockwell C38-C46C38Ungraded€3.5010
QU37025.087.00017/8"0.219"7/8"0.219"0.219"Rockwell C38-C46C38Ungraded€3.675
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Zinc Plated Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessColorThickness ToleranceHardnessRockwell HardnessPricePkg. Qty.
AB37321.025.0001#20.035"------€13,588.7537000
BU37480.008.0001#20.016"#20.016"--Rockwell C40-C50C40 to C50€2.02100
CB37480.008.0001#20.01"------€1,859.4990000
DB37321.031.0001#31/25"------€5,793.9817200
EB37480.050.0001#40.037"------€1,043.036750
FU37480.011.0001#40.018"#40.018"--Rockwell C40-C50C40 to C50€1.55100
GB37480.011.0001#40.012"------€849.1790000
HB37321.037.0001#40.042"------€10,357.1113150
IB37480.087.0001#40.052"---0.052" to 0.06"Rockwell C38-C46-€1,466.042500
J6DZC6#40.018"#40.018"--0.006"Rockwell C40-C50C40 to C50€5.06100
KB37480.056.0001#60.037"---0.037" to 0.045"Rockwell C38-C46-€1,062.975550
LB37480.025.0001#60.023"---0.023" to 0.028"Rockwell C40-C50-€899.7037000
MB37321.050.0001#60.055"------€9,752.726750
NB37480.013.0001#60.016"------€1,047.6590000
OU37480.013.0001#60.022"#60.022"--Rockwell C40-C50C40 to C50€1.79100
J6DZC7#60.022"#60.022"--0.006"Rockwell C40-C50C40 to C50€5.29100
J6DZC8#80.023"#80.023"--0.006"Rockwell C40-C50C40 to C50€8.28100
PB37480.062.0001#80.042"------€910.175000
QB37480.031.0001#80.028"------€603.0617200
RB37321.062.0001#80.059"------€9,916.015000
SB37480.016.0001#80.018"------€537.2150000
TU37480.016.0001#80.023"#80.023"--Rockwell C40-C50C40 to C50€1.82100
UB37480.037.0001#100.032"------€918.2413150
VB37480.019.0001#100.018"------€627.6950000
WB37480.100.0001#100.059"---0.059" to 0.067"Rockwell C38-C46-€1,504.181610
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Zinc Plated Steel Countersunk External Tooth Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessMaterial Grade/classLock Washer TypeClassDimensional StandardsPricePkg. Qty.
AB37500.016.0001#40.017"------€2,357.2350000
BB37500.037.0001#40.028"------€3,380.9313150
CU37500.013.0001#60.017"#60.017"UngradedCountersunk External Tooth LockNot ApplicableAsme B18.21.1€8.48100
DB37500.019.0001#60.02"------€2,847.1650000
EU37500.016.0001#8-#80.017"UngradedCountersunk External Tooth LockNot ApplicableAsme B18.21.1€8.29100
FB37500.021.0001#80.02"------€3,817.6331200
GU37500.019.0001#100.02"#100.02"UngradedCountersunk External Tooth LockNot ApplicableAsme B18.21.1€10.00100
HB37500.025.0001#100.02"------€1,921.1229400
IU37500.021.0001#120.02"#120.02"UngradedCountersunk External Tooth LockNot ApplicableAsme B18.21.1€16.13100
JU37500.025.00011/4"0.02"1/4"0.02"UngradedCountersunk External Tooth LockNot ApplicableAsme B18.21.1€8.62100
KU37500.037.00013/8"0.028"3/8"0.028"UngradedCountersunk External Tooth LockNot ApplicableAsme B18.21.1€17.0350
LU37500.031.00015/16"0.023"5/16"0.023"UngradedCountersunk External Tooth LockNot ApplicableAsme B18.21.1€15.26100
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Yellow Zinc Plated Steel Split Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMax. ThicknessMin. ThicknessHardnessRockwell HardnessMaterial Grade/classPricePkg. Qty.
AB37060.137.0001#20.344"------€1,213.82100
BB37060.150.0001#33/8"------€887.7275
CB37060.175.0001#50.389"------€663.5165
DU37060.150.00011 1/2"3/8"1 1/2"3/8"3/8"Rockwell C40-C50-Ungraded€52.435
EU37060.112.00011 1/8"0.281"1 1/8"0.281"0.281"Rockwell C46C46Ungraded€8.055
FU37060.175.00011 3/4"0.389"1 3/4"0.389"0.389"Rockwell C40-C50-Ungraded€36.835
GU37060.137.00011 3/8"0.344"1 3/8"0.344"0.344"Rockwell C40-C50-Ungraded€57.125
HU37060.100.00011"1/4"1"1/4"1/4"Rockwell C38-C46C38Ungraded€5.345
IU37060.050.00011/2"1/8"1/2"1/8"1/8"Rockwell C38-C46C38Ungraded€4.9225
JU37060.025.00011/4"1/16"1/4"0.062"0.062"Rockwell C38-C46C38Ungraded€3.52100
KU37060.200.00012"0.422"2"0.422"0.422"Rockwell C46C46Ungraded€27.225
LU37060.075.00013/4"3/16"3/4"0.188"0.188"Rockwell C38-C46C38Ungraded€5.0110
MU37060.037.00013/8"3/32"3/8"0.094"0.094"Rockwell C38-C46C38Ungraded€3.6250
N4VPG15/8"0.156"5/8"0.156"0.156"Rockwell C38-C46C38Ungraded€370.082000
OU37060.062.00015/8"0.156"---Rockwell C38-C46--€3.4710
PU37060.031.00015/16"0.0781"5/16"0.078"0.078"Rockwell C38-C46C38Ungraded€4.05100
QU37060.087.00017/8"0.219"7/8"0.219"0.219"Rockwell C38-C46C38Ungraded€3.955
RU37060.043.00017/16"0.109"7/16"0.109"0.109"Rockwell C38-C46C38Ungraded€3.3625
SU37060.056.00019/16"0.141"9/16"0.141"0.141"Rockwell C38-C46C38Ungraded€6.5225
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Plain Grade 18-8 Stainless Steel Split Lock Washers

StyleModelFits Bolt SizeThicknessFor Screw SizeMaterial Grade/classMax. ThicknessThickness ToleranceMin. ThicknessInside Dia. TolerancePricePkg. Qty.
A1NY84#20.02"#218-80.02"-0.02"-€4.94100
B1NY83#20.02"#218-80.02"-0.02"-€21.061000
CU51450.008.0001#20.02"#218-80.02"0.02"0.02"0.088" to 0.094"€1.6250
D1NY86#30.025"#318-80.025"-0.025"-€6.46100
EU51450.009.0001#30.025"---Not Rated--€2.3850
FB51450.011.0001#40.025"#418-80.025"+0.025"0.025"--1
RFQ
GU51450.011.0001#40.025"#418-80.025"-0.025"-€2.0550
H1NY89#50.031"#518-80.031"-0.031"-€5.16100
IU51450.012.0001#50.031"#5Ungraded0.031"Not Rated0.031"-0.003 to +0.003€2.7150
JU51450.013.0001#60.031"---0.031"--€2.2750
KB51450.013.0001#60.031"#618-80.031"+0.031"0.031"0.141" to 0.148"-1
RFQ
LU51450.016.0001#81/25"#818-8--1/25"+0.007"€2.2250
MB51450.016.0001#81/25"#818-8-+0.04"1/25"+0.007"-1
RFQ
NU51450.019.0001#100.047"#1018-8--0.047"+0.007"€2.6450
OB51450.019.0001#100.047"---+0.047"---1
RFQ
P1NY96#120.056"#1218-80.056"-0.056"-€10.27100
QU51450.021.0001#120.056"#1218-80.056"0.056"0.056"0.220" to 0.227"€4.3250
RU51450.150.00011 1/2"3/8"1 1/2"18-83/8"-3/8"-€28.275
SU51450.125.00011 1/4"0.312"------€50.535
TU51450.112.00011 1/8"0.281"------€11.495
UU51450.100.00011"1/4"1"18-8--1/4"+0.021"€11.185
V1PA161"1/4"1"18-81/4"-1/4"-€62.0610
WU51450.050.00011/2"1/8"1/2"18-8--1/8"+0.01"€4.8410
XU51450.025.00011/4"1/16"1/4"18-8--0.062"+0.008"€4.5150
YU51390.025.00011/4"0.0781"1/4"18-80.078"0.078"0.078"0.252" to 0.26"€8.5150
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Lock Washers

Lock washers are used for creating tight assemblies with ordinary fasteners. Raptor Supplies offers a wide range of lock washers from brands like Unistrut, Vulcan-Hart, Midwest Acorn Nut, Fabory, Super-Strut, Metric Blue, Woodhead, Foreverbolt, Cooper B-Line, Disc-Lock and Armor Coat. These lock washers grab adjoining materials for preventing loosening due to vibration.

Frequently Asked Questions

How to install a lock washer?

  • Place the lock washer between the threaded fastener (like a nut) and the screw / bolt head.
  • Make sure that the lock washer press against the fastener & other adjacent surfaces and forms a tight connection. Press the fastener down to lock the grooves of a tooth lock washer with the grooves of the nut.
  • Use a wrench or ratchet to tighten the nut or threaded fastener.
  • Make sure that the teeth of the tooth lock washer are covered completely by the nut / fastener head, or that the split lock washer is slightly out of alignment to indicate tension on the threaded fastener. Users may loosen the nut / threaded fastener to adjust the washer if it is not operating correctly.

How to remove a lock washer?

  • After the operation is completed, the washer can be removed by simply removing the nut / threaded fastener that is holding the washer in place using a vise-grip or pipe wrench.
  • Use a flat screwdriver to pry the lock washer off. When removing a split washer, the screwdriver head should be placed inside the split or beneath the washer and pushed. When removing a washer having teeth, the screwdriver head should be placed under a tooth and pushed up, repeating the procedure with more teeth if required. For other lock washer types, the screwdriver head can be placed below the washer and pushed up. The washer may break during removal, depending on the amount of pressure being applied.
  • If the lock washer does not budge, use penetrating oil and repeat the previous step.
  • Some lock washers can be used multiple times easily. Other washers (split lock) can be used only 1 or 2 times. Users should not reuse a split lock washer or other damaged washers. Do not use old washers in high-stress joint applications.

What is the difference between lock washers and flat washers?

Flat washers are suitable for increasing the surface area and distributing the applied force when tightening the fastener. They can be used on the fastener's bolt & nut sides, or used as spacers where using a bolt may not be suitable.
Lock washers create tension during tightening to prevent the loosening of nuts. They are generally used on the fastener's nut side for applications involving vibrations.

Which type of lock washers has the highest vibration resistance?

Split Lock, Tooth Lock, Diamond-Coated Lock, Spring Lock and Wedge Lock type lock washers have vibration resistance in ascending or increasing order.