Lock Washers

Filter

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

APPROVED VENDOR -

Zinc Plated Grade 2 Steel External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU37420.021.0001#120.231"0.475"Rockwell C40-C500.027"0.02" to 0.027"#12Not Applicable€6.27100
BU37420.100.00011"1.025"1.59"Rockwell C38-C460.059"0.059" to 0.067"1"Not Applicable€9.045
CU37420.025.00011/4"0.267"0.51"Rockwell C40-C500.028"0.023" to 0.028"1/4"Not Applicable€6.03100
DU37420.087.00017/8"0.897"1.38"Rockwell C38-C460.052"0.052" to 0.06"7/8"Not Applicable€6.305
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFor Screw SizeClassHardnessColorPricePkg. Qty.
ALW7S00200-100P1M22.1 mm4.4 mm0.5 mmM2Not ApplicableRockwell C44-C51Black€4.37100
ALW7S00250-100P1M2.52.6 mm5.1 mm0.6 mmM2.5Not ApplicableRockwell C44-C51Black€4.40100
ALW7S00260-100P1M2.62.7 mm5.2 mm0.6 mmM2.6Not ApplicableRockwell C44-C51Black€4.39100
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceFor Screw SizeClassHardnessPricePkg. Qty.
ALWIS-100-100P#101/5"0.334"0.047"0.047" to 0.062"-Not ApplicableRockwell C38-C46€2.05100
ALWIS0250-100P1/4"0.26"0.487"1/16"0.062" to 0.109"1/4"Not ApplicableRockwell C38-C46€2.25100
ALWIS0370-100P3/8"0.385"17/25"3/32"0.094" to 0.141"3/8"Not ApplicableRockwell C38-C46€5.44100
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceFor Screw SizeHardnessColorPricePkg. Qty.
AUST187437M33.5 mm5.5 mm1 mm-0.1 mm to +0.1 mmM3Rockwell C44-C51Blue€9.63100
AUST187438M44.5 mm6.5 mm1.2 mm-0.1 mm to +0.1 mm-Rockwell C44-C51-€5.91100
AUST187439M55.5 mm8.5 mm1.6 mm-0.1 mm to +0.1 mmM5Rockwell C44-C51Blue€6.33100
AUST187440M66.5 mm9.5 mm1.6 mm-0.1 mm to +0.1 mmM6Rockwell C44-C51Blue€10.98100
AUST182830M66.5 mm11.3 mm1.7 mm-0.1 mm to +0.1 mmM6Rockwell C44-C51Blue€11.59100
AUST182831M88.5 mm14.5 mm2 mm-0.1 mm to +0.1 mmM8Rockwell C44-C51Blue€11.54100
AUST187441M89 mm12.5 mm2 mm-0.1 mm to +0.1 mmM8Rockwell C44-C51Blue€11.74100
AUST187442M1010.5 mm15.5 mm2.5 mm-0.15 mm to +0.15 mmM10Rockwell C44-C51Blue€24.58100
AUST182832M1010.5 mm17.5 mm2.3 mm-0.15 mm to +0.15 mmM10Rockwell C44-C51Blue€22.88100
AUST182833M1213 mm20 mm2.5 mm-0.15 mm to +0.15 mmM12Rockwell C44-C51Blue€37.89100
AUST187443M1212.5 mm17.5 mm2.5 mm-0.15 mm to +0.15 mmM12Rockwell C44-C51Blue€40.33100
AUST182834M1616.5 mm26.5 mm3.6 mm-0.2 mm to +0.2 mmM16Rockwell C44-C51Blue€47.5550
AUST187445M1616.5 mm23 mm3.5 mm-0.2 mm to +0.2 mmM16Rockwell C44-C51Blue€66.67100
AUST187447M2021 mm30 mm4.6 mm-0.2 mm to +0.2 mmM20Rockwell C44-C51Blue€61.7850
AUST182835M2021 mm32.5 mm4.2 mm-0.2 mm to +0.2 mmM20Rockwell C44-C51Blue€75.9650
AUST182836M2425 mm40 mm4.9 mm-0.2 mm to +0.2 mmM24Rockwell C44-C51Blue€43.9025
AUST187449M2425 mm35 mm5 mm-0.2 mm to +0.2 mmM24Rockwell C44-C51Blue€86.2625
NORD-LOCK -

Plain Grade 316 Stainless Steel Wedge Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeColorPricePkg. Qty.
A1090-0.34"0.65"Rockwell C522/25"-0.01" to +0.01"5/16"Silver€1,415.41200
B1069#50.13"7/25"Rockwell C460.09"-0.01" to +0.01"#5Silver€1,111.41200
A1071#60.15"0.35"Rockwell C520.09"-0.01" to +0.01"#6Silver€1,189.13200
B1070#60.15"0.3"Rockwell C520.09"-0.01" to +0.01"#6Silver€1,129.43200
B1072#80.17"0.3"Rockwell C520.09"-0.01" to +0.01"#8Silver€1,106.27200
A1074#80.17"0.35"Rockwell C520.09"-0.01" to +0.01"#8Silver€1,112.42200
B1075#100.21"0.35"Rockwell C520.09"-0.01" to +0.01"#10Silver€1,089.85200
A1079#100.21"0.43"Rockwell C520.09"-0.01" to +0.01"#10Silver€1,141.96200
B28071 1/2"1.59"2.3"Rockwell C520.27"-0.02" to +0.02"1 1/2"Silver€3,770.4725
B27331 1/4"1.35"1.91"Rockwell C520.27"-0.02" to +0.02"1 1/4"Silver€2,373.7225
A27451 1/8"1 6/25"2.3"Rockwell C520.27"-0.02" to +0.02"1 1/8"Silver€3,735.7625
B27221 1/8"1 6/25"1.85"Rockwell C520.27"-0.02" to +0.02"1 1/8"Silver€4,273.5750
B29021 3/4"1.82"2 19/25"Rockwell C520.27"-0.03" to +0.03"1 3/4"Silver€501.381
B27321 3/8"1.47"2.17"Rockwell C520.27"-0.02" to +0.02"1 3/8"Silver€3,145.6725
A27461"1.1"1.91"Rockwell C520.13"-0.01" to +0.01"1"Silver€4,575.9550
B27341"1.1"1.54"Rockwell C520.13"-0.01" to +0.01"1"Silver€3,971.00100
A11101/2"0.53"1"Rockwell C520.13"-0.01" to +0.01"1/2"Silver€2,172.06100
B21491/2"0.53"0.77"Rockwell C520.09"-0.01" to +0.01"1/2"Silver€1,927.60200
A10861/4"7/25"0.53"Rockwell C520.09"-0.01" to +0.01"1/4"Silver€1,268.77200
B10851/4"7/25"0.45"Rockwell C520.09"-0.01" to +0.01"1/4"Silver€1,148.04200
B29072 1/2"2 16/25"3.74"Rockwell C520.35"-0.03" to +0.03"2 1/2"Silver€1,372.821
B29052 1/4"2.33"3.35"Rockwell C520.35"-0.03" to +0.03"2 1/4"Silver€1,410.911
B29042"2.11"3.15"Rockwell C520.35"-0.03" to +0.03"2"Silver€1,251.941
B29103"3.11"4.33"Rockwell C520.35"-0.03" to +0.03"-Silver€1,494.051
B11213/4"0.79"1.21"Rockwell C520.13"-0.01" to +0.01"3/4"Silver€2,674.92100
ARMOR COAT -

Armor Coat Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFor Screw SizeHardnessColorThickness TolerancePricePkg. Qty.
AUST2360501/2"0.512"0.879"1/8"1/2"Rockwell C33-C39Silver-0.006" to +0.006"€12.4625
BUST2360461/4"0.26"0.489"1/16"1/4"Rockwell C33-C39Silver-0.006" to +0.006"€11.00100
CUST2360523/4"0.766"1.285"3/16"3/4"Rockwell C33-C39Silver-0.006" to +0.006"€24.1520
DUST2360483/8"0.385"11/16"3/32"3/8"Rockwell C33-C39Silver-0.006" to +0.006"€12.3550
EUST2360515/8"0.641"1.087"0.156"5/8"Rockwell C33-C39Silver-0.006" to +0.006"€24.6425
FUST2360475/16"0.322"0.593"0.0781"5/16"Rockwell C33-C39Silver-0.006" to +0.006"€5.8050
GUST2360497/16"0.45"0.784"0.109"7/16"Rockwell C33-C39Silver-0.006" to +0.006"€9.3425
MIDWEST ACORN NUT -

Chrome Plated Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFor Screw SizeHardnessColorThickness TolerancePricePkg. Qty.
AMPB10001/4"0.26"0.487"1/16"1/4"Rockwell C38-C46Chrome-0.01" to +0.01"€59.7750
BMPB10023/8"0.385"17/25"3/32"3/8"Rockwell C38-C46Chrome-0.01" to +0.01"€59.7750
CMPB10015/16"0.322"0.583"0.0781"5/16"Rockwell C38-C46Chrome-0.01" to +0.01"€59.7750
APPROVED VENDOR -

Zinc Plated Grade 2 Steel Internal and External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceFor Screw SizeClassHardnessPricePkg. Qty.
AU37590.011.0001#40.123"0.475"0.02"0.016" to 0.021"#4Not ApplicableRockwell C40-C50€13.69100
BU37590.013.0001#60.15"0.51"0.028"0.023" to 0.028"#6Not ApplicableRockwell C40-C50€9.07100
CU37590.016.0001#80.176"0.61"0.034"0.028" to 0.034"#8Not ApplicableRockwell C40-C50€10.68100
DU37590.019.0001#100.204"0.61"0.034"0.028" to 0.034"#10Not ApplicableRockwell C40-C50€14.59100
EU37590.025.00011/4"0.267"19/25"1/25"0.032" to 0.040"1/4"Not ApplicableRockwell C40-C50€25.94100
FU37590.031.00015/16"0.332"0.9"1/25"0.032" to 0.040"5/16"Not ApplicableRockwell C40-C50€37.75100
-

Plain Grade A4 Stainless Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceFor Screw SizeClassHardnessPricePkg. Qty.
AM55450.020.0001M22.1 mm4.4 mm0.5 mm-M2Not Applicable-€3.7550
BM55450.025.0001M2.52.6 mm5.1 mm0.6 mm-M2.5Not Applicable-€2.8350
CM55450.030.0001M33.1 mm6.2 mm0.8 mm-M3Not Applicable-€5.8450
DLW7XX00350-100P1M3.53.6 mm6.7 mm0.8 mm-0.1 mm to +0.1 mmM3.5Not Applicable-€9.05100
EM55450.040.0001M44.1 mm7.6 mm0.9 mm-M4Not Applicable-€3.9950
FM55390.050.0001M55.1 mm8.8 mm1.6 mm-M5Not ApplicableRockwell C38-C46€5.2850
GM55450.050.0001M55.1 mm9.2 mm1.2 mm-M5Not Applicable-€9.0850
HM55390.060.0001M66.1 mm9.9 mm1.6 mm-M6Not ApplicableRockwell C38-C46€6.8050
IM55450.060.0001M66.1 mm11.8 mm1.6 mm-M6Not Applicable-€6.9950
JM55390.080.0001M88.1 mm12.7 mm2 mm-M8Not ApplicableRockwell C38-C46€5.1650
KM55450.080.0001M88.1 mm14.8 mm2 mm-0.1 mm to +0.1 mmM8Not Applicable-€6.2050
LM55450.100.0001M1010.2 mm18.1 mm2.2 mm-M10Not Applicable-€10.6950
FM55390.100.0001M1010.2 mm16 mm2.5 mm-M10Not ApplicableRockwell C38-C46€12.4750
MM55450.120.0001M1212.2 mm21.1 mm2.5 mm-M12Not Applicable-€7.3425
NM55390.120.0001M1212.2 mm18 mm2.5 mm-M12--€14.1350
OM55450.140.0001M1414.2 mm24.1 mm3 mm-0.15 mm to +0.15 mm-Not Applicable-€15.3525
PM55450.160.0001M1616.2 mm27.4 mm3.5 mm-M16Not Applicable-€6.9310
QM55450.180.0001M1818.2 mm29.4 mm3.5 mm-M18Not Applicable-€7.8610
RM55450.200.0001M2020.2 mm33.6 mm4 mm-M20Not Applicable-€6.435
SM55450.220.0001M2222.5 mm35.9 mm4 mm-M22Not ApplicableRockwell C38-C46€11.105
OM55450.240.0001M2424.5 mm40 mm5 mm-0.2 mm to +0.2 mmM24Not Applicable-€14.745
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFor Screw SizeClassHardnessPricePkg. Qty.
ASIW7S0200-100P1M22.2 mm4.5 mm0.3 mm to 0.6 mmM2Not ApplicableRockwell C35-C42€8.44100
ASIW7S0250-100P1M2.52.7 mm5.5 mm0.4 mm to 0.8 mmM2.5Not ApplicableRockwell C35-C42€8.91100
ASIW7S0260-100P1M2.62.8 mm5.5 mm0.4 mm to 0.8 mmM2.6Not ApplicableRockwell C35-C42€7.49100
ASIW7S0350-100P1M3.53.7 mm7 mm0.5 mm to 1 mmM3.5Not ApplicableRockwell C35-C42€5.85100
ASIW7S1400-100P2M1415 mm24 mm1 mm to 2 mmM14Not ApplicableRockwell C35-C42€52.66100
ASIW7S1600-100P2M1617 mm26 mm1.2 mm to 2.4 mmM16Not ApplicableRockwell C35-C42€58.34100
ASIW7S1800-050P2M1819 mm30 mm1.4 mm to 2.8 mmM18Not ApplicableRockwell C35-C42€46.1650
ASIW7S2000-050P2M2021 mm33 mm1.4 mm to 2.8 mmM20Not ApplicableRockwell C35-C42€57.4350
APPROVED VENDOR -

Plain Grade A2 Stainless Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFor Screw SizeClassTypeMaterialPricePkg. Qty.
AM51458.020.0001M22.2 mm4.5 mm0.3 mmM2Not ApplicableInternal Tooth LockStainless Steel€3.4950
BSIW7X0250-100P1M2.52.7 mm5.5 mm0.4 mm to 0.8 mmM2.5Not ApplicableInternal Tooth LockStainless Steel€8.23100
BSIW7X0260-100P1M2.62.8 mm5.5 mm0.4 mm to 0.8 mmM2.6Not ApplicableInternal Tooth LockStainless Steel€8.65100
CM51458.030.0001M33.2 mm6 mm0.4 mmM3Not ApplicableInternal Tooth LockStainless Steel€2.5750
BSIW7X0350-100P1M3.53.7 mm7 mm0.5 mm to 1 mmM3.5Not ApplicableInternal Tooth LockStainless Steel€8.91100
DM51458.040.0001M44.3 mm8 mm0.5 mmM4Not ApplicableInternal Tooth LockStainless Steel€2.9450
EM51458.050.0001M55.3 mm10 mm0.6 mmM5Not ApplicableInternal Tooth LockStainless Steel€2.7850
FM51458.060.0001M66.4 mm11 mm0.7 mmM6Not ApplicableInternal Tooth LockStainless Steel€4.3950
GM51458.080.0001M88.4 mm15 mm0.8 mmM8Not ApplicableInternal Tooth LockStainless Steel€7.3350
HM51458.100.0001M1010.5 mm18 mm0.9 mmM10Not ApplicableInternal Tooth LockStainless Steel€7.4050
IM51458.120.0001M1213 mm20.5 mm1 mmM12Not ApplicableInternal Tooth LockStainless Steel€4.8625
JM51458.140.0001M1415 mm24 mm1 mmM14Not ApplicableInternal Tooth LockStainless Steel€6.8425
KM51458.160.0001M1617 mm26 mm1.2 mmM16Not ApplicableInternal Tooth LockStainless Steel€4.3510
LM51458.200.0001M2021 mm33 mm1.4 mmM20Not ApplicableInternal Tooth LockStainless Steel€5.645
APPROVED VENDOR -

Plain Grade A2 Stainless Steel External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessFor Screw SizeClassPricePkg. Qty.
AM51460.030.0001M33.2 mm6 mm-0.4 mmM3Not Applicable€2.8050
BM51456.030.0001M33.2 mm6 mmRockwell C400.4 mmM3Not Applicable€2.3450
CM51456.040.0001M44.3 mm8 mm-0.5 mmM4Not Applicable€2.0250
DM51460.040.0001M44.3 mm8 mm-0.5 mmM4Not Applicable€1.9450
EM51456.050.0001M55.3 mm10 mm-0.6 mmM5Not Applicable€3.7750
FM51460.051.0001M55.1 mm9 mm-0.5 mmM5Not Applicable€9.7450
GM51460.050.0001M55.3 mm10 mm-0.6 mmM5Not Applicable€2.7450
HM51460.060.0001M66.4 mm11 mm-0.7 mmM6Not Applicable€6.3850
IM51456.060.0001M66.4 mm11 mm-0.7 mmM6Not Applicable€3.7950
JM51460.080.0001M88.4 mm15 mm-0.8 mm-Not Applicable€5.9450
FM51460.082.0001M88.2 mm14 mm-0.8 mmM8Not Applicable€7.8950
KM51456.080.0001M88.4 mm15 mm-0.8 mmM8Not Applicable€6.2050
LM51456.100.0001M1010.5 mm18 mm-0.9 mmM10Not Applicable€6.9350
FM51460.100.0001M1010.5 mm18 mm-0.9 mm to 2.7 mmM10Not Applicable€7.1450
MM51460.120.0001M1213 mm20.5 mmRockwell C38-C461 mmM12Not Applicable€5.8125
NM51456.120.0001M1213 mm20.5 mm-1 mmM12Not Applicable€3.6625
OM51456.140.0001M1415 mm24 mm-1 mmM14Not Applicable€5.5125
PM51456.160.0001M1617 mm26 mm-1.2 mm to 2.4 mmM16Not Applicable€5.6310
FM51460.160.0001M1617 mm26 mm-1.2 mm to 3.6 mmM16Not Applicable€4.3310
QM51460.200.0001M2021 mm33 mm-1.4 mmM20Not Applicable€6.705
RM51460.240.0001M2425 mm38 mm-1.5 mmM24Not Applicable€5.325
-

Zinc Plated Steel Internal and External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFor Screw SizeClassHardnessPricePkg. Qty.
AB37590.050.0001#40.512"1.38"0.052"---€3,848.246750
BB37590.037.0001#120.384"1 1/8"0.042"---€3,461.5613150
CU37590.050.00011/2"0.512"1.38"0.052"1/2"Not ApplicableRockwell C40-C50€13.9625
DU37590.037.00013/8"0.384"1 1/8"0.042"3/8"Not ApplicableRockwell C40-C50€12.8750
-

Plain Grade A2 Stainless Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AM51450.020.0001M22.1 mm4.4 mmRockwell C38-C460.5 mm-M2Not Applicable€3.1350
BM51450.025.0001M2.52.6 mm5.1 mmRockwell C38-C460.6 mm-M2.5Not Applicable€3.1350
CM51450.026.0001M2.62.7 mm5.2 mmRockwell C460.6 mm-M2.6Not Applicable€2.9350
DM51390.030.0001M33.1 mm5.6 mmRockwell C40-C501 mm-M3Not Applicable€3.3850
EM51450.030.0001M33.1 mm6.2 mmRockwell C460.8 mm-M3Not Applicable€4.4250
FM51450.035.0001M3.53.6 mm6.7 mmRockwell C460.8 mm-M3.5Not Applicable€1.4850
GM51450.040.0001M44.1 mm7.6 mmRockwell C350.9 mm-M4Not Applicable€5.0150
HM51390.040.0001M44.1 mm7 mmRockwell C40-C501.2 mm-M4Not Applicable€3.0450
IM51390.050.0001M55.1 mm8.8 mmRockwell C40-C501.6 mm-M5Not Applicable€5.1250
JM51450.050.0001M55.1 mm9.2 mmRockwell C38-C461.2 mm-M5Not Applicable€4.5450
KM51390.060.0001M66.1 mm9.9 mmRockwell C40-C501.6 mm-M6Not Applicable€3.8650
LM51450.060.0001M66.1 mm11.8 mmRockwell C351.6 mm-0.1 mm to +0.1 mmM6Not Applicable€4.2650
MM51390.080.0001M88.1 mm12.7 mmRockwell C40-C502 mm-M8Not Applicable€4.8550
NM51450.080.0001M88.1 mm14.8 mmRockwell C352 mm-0.1 mm to +0.1 mmM8Not Applicable€6.5050
OM51450.100.0001M1010.2 mm18.1 mmRockwell C352.2 mm-0.15 mm to +0.15 mmM10Not Applicable€9.5050
PM51390.100.0001M1010.2 mm16 mmRockwell C40-C502.5 mm-M10Not Applicable€6.7950
QM51450.120.0001M1212.2 mm21.1 mm-2.5 mm-0.15 mm to +0.15 mmM12Not Applicable€8.9025
RM51390.120.0001M1212.2 mm18 mm-2.5 mm-M12Not Applicable€5.1625
SM51450.140.0001M1414.2 mm24.1 mmRockwell C353 mm-0.15 mm to +0.15 mmM14Not Applicable€11.7425
TM51450.160.0001M1616.2 mm27.4 mm-3.5 mm-0.2 mm to +0.2 mmM16Not Applicable€6.1710
UM51390.160.0001M1616.2 mm24.4 mm-3.5 mm-M16-€5.5410
VM51450.180.0001M1818.2 mm29.4 mmRockwell C353.5 mm-M18Not Applicable€5.8810
WM51450.200.0001M2020.2 mm33.6 mm-4 mm-M20Not Applicable€4.955
XM51450.220.0001M2222.5 mm35.9 mmRockwell C38-C464 mm-M22Not Applicable€5.815
YM51450.240.0001M2424.5 mm40 mmRockwell C355 mm-M24Not Applicable€8.355
-

Zinc Plated Steel External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AB37420.013.0001#20.141"0.305"-0.016"---€993.2290000
BB37420.016.0001#30.168"0.365"-0.018"---€565.4950000
CU37420.011.0001#40.123"0.26"Rockwell C40-C500.018"-#4Not Applicable€2.11100
DB37420.062.0001#40.641"1.045"-0.042"---€910.895000
EB37420.031.0001#48/25"0.588"-0.028"---€696.6722700
FB37420.019.0001#40.195"0.395"-0.018"---€890.7950000
GB37420.037.0001#50.384"0.67"-0.032"---€885.9314450
HB37420.043.0001#60.448"0.74"-0.032"---€1,342.1612500
IB37420.075.0001#60.768"1.22"-0.047"---€899.603330
J6DZC4#60.15"8/25"Rockwell C40-C500.022"-0.006"#6Not Applicable€8.21100
KU37420.013.0001#60.15"8/25"Rockwell C40-C500.022"-#6Not Applicable€1.79100
J6DZC5#80.176"0.381"Rockwell C40-C500.023"-0.005"#8Not Applicable€5.02100
LU37420.016.0001#80.176"0.381"Rockwell C40-C500.023"-#8Not Applicable€1.91100
MB37420.050.0001#80.513"22/25"-0.037"---€703.446750
NB37420.056.0001#100.576"24/25"-0.037"---€1,297.306325
OU37420.019.0001#100.204"0.41"Rockwell C40-C500.024"-#10Not Applicable€1.98100
PB37420.011.0001#120.115"0.245"-0.012"---€1,021.9390000
QU37420.050.00011/2"0.513"22/25"Rockwell C40-C500.037"-1/2"Not Applicable€4.3025
RU37420.075.00013/4"0.768"1.22"Rockwell C40-C500.047"-3/4"Not Applicable€5.0810
SU37420.037.00013/8"0.384"0.67"Rockwell C40-C500.032"-3/8"Not Applicable€5.0950
TU37420.062.00015/8"0.641"1.045"Rockwell C40-C500.042"-5/8"Not Applicable€3.5010
UU37420.031.00015/16"0.332"0.61"Rockwell C40-C500.034"-5/16"Not Applicable€5.42100
VU37420.043.00017/16"0.448"0.74"Rockwell C40-C500.032"-7/16"Not Applicable€3.0725
WU37420.056.00019/16"0.576"24/25"Rockwell C40-C500.037"-9/16"Not Applicable€5.8825
XM37420.030.0001M33.2 mm6 mmRockwell C38-C460.4 mm-M3Not Applicable€6.93100
APPROVED VENDOR -

Zinc Plated Grade 2 Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU37480.100.00011"1.019"1.59"Rockwell C38-C460.059"0.059" to 0.067"1"Not Applicable€10.535
BU37480.025.00011/4"0.267"0.478"Rockwell C40-C500.028"0.023" to 0.028"1/4"Not Applicable€5.05100
CU37480.087.00017/8"0.894"1.364"Rockwell C38-C460.052"0.052" to 0.06"7/8"Not Applicable€7.435
DU37480.043.00017/16"0.448"0.74"Rockwell C40-C500.032"0.032" to 0.04"7/16"Not Applicable€6.5925
EU37480.056.00019/16"0.576"0.957"Rockwell C38-C460.037"0.037" to 0.045"9/16"Not Applicable€12.6625
APPROVED VENDOR -

Plain Grade 410 Stainless Steel External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU53460.011.0001#40.115"0.245"Rockwell C40-C500.012"0.012" to 0.018"#4Not Applicable€2.3950
B1NY46#40.123"0.26"Rockwell C400.018"0.012" to 0.018"#4Not Applicable€7.24100
CU53460.013.0001#60.141"0.305"Rockwell C400.016"0.016" to 0.022"#6Not Applicable€2.0150
DU53460.016.0001#80.168"0.365"Rockwell C400.018"-#8Not Applicable€3.1750
EU53460.019.0001#100.195"0.395"Rockwell C400.018 ft.--Not Applicable€4.5550
FU53460.050.00011/2"0.513"22/25"Rockwell C400.037"--Not Applicable€3.6510
GU53460.025.00011/4"0.256"0.494"Rockwell C400.023"0.023" to 0.028"1/4"Not Applicable€12.7650
HU53460.075.00013/4"0.768"1.22"Rockwell C400.047"--Not Applicable€6.085
IU53460.037.00013/8"0.398"0.694"Rockwell C401/25"0.032" to 0.04"-Not Applicable€19.2250
JU53460.062.00015/8"0.641"1.045"Rockwell C400.042"-5/8"Not Applicable€16.3610
KU53460.031.00015/16"8/25"0.588"Rockwell C400.028"-5/16"Not Applicable€8.7750
LU53460.043.00017/16"0.448"0.74"Rockwell C400.032"0.032" to 0.04"7/16"Not Applicable€14.0725
-

Plain Phosphor Bronze External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AB50450.011.0001#20.115"0.245"-0.012"---€7,763.8690000
BU50450.011.0001#40.123"0.26"Rockwell B900.018"0.012" to 0.018"#4Not Applicable€12.18100
CB50450.013.0001#40.141"0.305"-0.016"---€7,821.4190000
DU50450.013.0001#60.15"8/25"Rockwell B900.022"0.016" to 0.022"#6Not Applicable€8.92100
EB50450.016.0001#60.168"0.365"-0.018"---€9,174.0050000
AB50450.037.0001#60.384"0.67"-0.032"---€7,505.1814450
FU50450.016.0001#80.176"0.381"Rockwell B900.023"0.018" to 0.023"#8Not Applicable€23.11100
AB50450.019.0001#80.195"0.395"-0.018"---€10,817.0150000
GU50450.019.0001#100.204"0.41"Rockwell B900.024"0.018" to 0.024"#10Not Applicable€29.99100
HB50450.025.0001#100.256"0.494"-0.023"---€7,886.7332200
AB50450.050.0001#100.513"22/25"-0.037"---€10,985.726750
IU50450.050.00011/2"0.53"0.9"Rockwell B900.045"0.037" to 0.045"1/2"Not Applicable€50.3925
JU50450.025.00011/4"0.267"0.51"Rockwell B900.028"0.023" to 0.028"1/4"Not Applicable€28.27100
KU50450.037.00013/8"0.384"0.67"Rockwell C500.032"-3/8"Not Applicable€41.0650
KU50450.031.00015/16"8/25"0.588"Rockwell C500.028"-5/16"Not Applicable€42.88100
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceFor Screw SizeClassHardnessPricePkg. Qty.
AM37200.030.0001M33.1 mm5.6 mm1 mm-M3Not ApplicableRockwell C44-C51€7.96100
AM37000.030.0001M33.1 mm6.2 mm0.8 mm-0.1 mm to +0.1 mmM3Not ApplicableRockwell C44-C51€4.00100
AM37000.035.0001M3.53.6 mm6.7 mm0.8 mm-0.1 mm to +0.1 mmM3.5Not ApplicableRockwell C44-C51€5.08100
AM37000.040.0001M44.1 mm7.6 mm0.9 mm-0.1 mm to +0.1 mmM4Not ApplicableRockwell C44-C51€2.86100
AM37200.040.0001M44.1 mm7 mm1.2 mm-M4Not ApplicableRockwell C44-C51€4.30100
AM37000.050.0001M55.1 mm9.2 mm1.2 mm-0.1 mm to +0.1 mmM5Not ApplicableRockwell C44-C51€2.29100
AM37200.050.0001M55.1 mm8.8 mm1.6 mm-M5Not ApplicableRockwell C44-C51€7.76100
AM37000.060.0001M66.1 mm11.8 mm1.6 mm-0.1 mm to +0.1 mmM6Not ApplicableRockwell C44-C51€3.99100
AM37200.060.0001M66.1 mm9.9 mm1.6 mm-M6Not ApplicableRockwell C44-C51€3.40100
AM37000.080.0001M88.1 mm14.8 mm2 mm-0.1 mm to +0.1 mmM8Not ApplicableRockwell C44-C51€4.86100
AM37200.080.0001M88.1 mm12.7 mm2 mm-M8Not ApplicableRockwell C44-C51€6.53100
AM37000.100.0001M1010.2 mm18.1 mm2.2 mm-0.15 mm to +0.15 mmM10Not ApplicableRockwell C44-C51€5.55100
AM37200.100.0001M1010.2 mm16 mm2.5 mm-0.127 mm to +0.127 mmM10Not ApplicableRockwell C44-C51€5.04100
METRIC BLUE -

Metric Blue Alloy Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceFor Screw SizeHardnessColorPricePkg. Qty.
AUST182827M33.5 mm5.8 mm0.9 mm-0.1 mm to +0.1 mm-Rockwell C44-C51Blue€4.75100
BUST182828M44.5 mm7.3 mm1 mm-0.1 mm to +0.1 mmM4Rockwell C44-C51Blue€4.99100
CUST182829M55.5 mm8.8 mm1.2 mm-0.1 mm to +0.1 mmM5Rockwell C44-C51Blue€5.36100
DUST187444M1414.5 mm20.5 mm3 mm-0.2 mm to +0.2 mmM14Rockwell C44-C51Blue€50.38100
APPROVED VENDOR -

Plain Grade 410 Stainless Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessColorThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU53462.008.0001#20.089"0.172"0.01"--#2Not Applicable€7.4050
BU53462.009.0001#30.102"0.215"0.01"--#3Not Applicable€3.5950
CU53462.011.0001#40.115"0.245"0.012"Silver0.012" to 0.018"#4Not Applicable€3.0150
DU53462.013.0001#60.141"0.275"0.016"Silver0.016" to 0.022"#6Not Applicable€6.0350
EU53462.016.0001#80.168"0.325"0.018"Silver0.018" to 0.023"#8Not Applicable€11.4250
FU53462.019.0001#100.195"0.365"0.018"Silver0.018" to 0.024"#10Not Applicable€3.8550
GU53462.021.0001#120.221"0.394"0.02"Silver0.02" to 0.027"#12Not Applicable€4.4950
HU53462.050.00011/2"0.512"0.867"0.037"Black-0.004" to +0.004"1/2"Not Applicable€4.4510
IU53462.025.00011/4"0.256"0.46"0.023"--1/4"Not Applicable€6.5750
JU53462.075.00013/4"0.769"1.22"0.047"Black-0.004" to +0.004"3/4"Not Applicable€4.845
KU53462.037.00013/8"0.384"0.67"0.032"--3/8"Not Applicable€13.6250
LU53462.062.00015/8"16/25"1.045"0.042"--0.004" to +0.004"-Not Applicable€25.1210
MU53462.031.00015/16"8/25"0.594"0.028"--5/16"Not Applicable€10.0050
NU53462.043.00017/16"0.448"0.74"0.032"--7/16"Not Applicable€14.1325
12...1617

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.