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

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessClassHardnessTypeMaterialPrice (inc. VAT)Pkg. Qty.
ASIW7S0200-100P1M22.2 mm4.5 mm0.3 mm to 0.6 mmNot ApplicableRockwell C35-C42Internal Tooth LockSpring Steel£6.77100
ASIW7S0250-100P1M2.52.7 mm5.5 mm0.4 mm to 0.8 mmNot ApplicableRockwell C35-C42Internal Tooth LockSpring Steel£7.14100
ASIW7S0260-100P1M2.62.8 mm5.5 mm0.4 mm to 0.8 mmNot ApplicableRockwell C35-C42Internal Tooth LockSpring Steel£6.01100
ASIW7S0350-100P1M3.53.7 mm7 mm0.5 mm to 1 mmNot ApplicableRockwell C35-C42Internal Tooth LockSpring Steel£4.69100
ASIW7S1400-100P2M1415 mm24 mm1 mm to 2 mmNot ApplicableRockwell C35-C42Internal Tooth LockSpring Steel£42.19100
ASIW7S1600-100P2M1617 mm26 mm1.2 mm to 2.4 mmNot ApplicableRockwell C35-C42Internal Tooth LockSpring Steel£46.75100
ASIW7S1800-050P2M1819 mm30 mm1.4 mm to 2.8 mmNot ApplicableRockwell C35-C42Internal Tooth LockSpring Steel£36.9950
ASIW7S2000-050P2M2021 mm33 mm1.4 mm to 2.8 mmNot ApplicableRockwell C35-C42Internal Tooth LockSpring Steel£46.0250
METRIC BLUE -

Metric Blue Alloy Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPrice (inc. VAT)Pkg. Qty.
AUST182827M33.5 mm5.8 mm0.9 mm-0.1 mm to +0.1 mmRockwell C44-C51Blue£2.32100
BUST182828M44.5 mm7.3 mm1 mm-0.1 mm to +0.1 mmRockwell C44-C51Blue£2.23100
CUST182829M55.5 mm8.8 mm1.2 mm-0.1 mm to +0.1 mmRockwell C44-C51Blue£3.73100
DUST187444M1414.5 mm20.5 mm3 mm-0.2 mm to +0.2 mmRockwell C44-C51Blue£28.07100
APPROVED VENDOR -

Plain Grade 316 Stainless Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceClassColorPrice (inc. VAT)Pkg. Qty.
AU55462.011.0001#40.116"0.265"Rockwell B850.015"0.012" to 0.018"Not ApplicableSilver£59.8950
BU55462.013.0001#60.142"0.288"Rockwell B850.017"0.016" to 0.022"Not ApplicableSilver£11.8750
CU55462.016.0001#80.168"0.336"Rockwell B850.02"0.018" to 0.023"Not ApplicableSilver£6.9050
DU55462.019.0001#100.195"0.365"Rockwell B880.018"-0.003" to +0.003"Not Applicable-£14.7350
EU55462.025.00011/4"0.256"0.46"Rockwell B880.023"-0.0025" to +0.0025"Not Applicable-£26.9250
FSIWIXX037-025BX3/8"0.384"0.692"Rockwell B850.035"0.032" to 0.04"Not ApplicableSilver£76.8725
GU55462.037.00013/8"0.384"0.67"-0.032"-Not Applicable-£5.7350
HU55462.031.00015/16"8/25"0.594"-0.028"-Not Applicable-£34.3950
APPROVED VENDOR -

Zinc Plated Steel External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceClassColorPrice (inc. VAT)Pkg. Qty.
AB37420.013.0001#20.141"0.305"-0.016"---£959.3690000
BB37420.016.0001#30.168"0.365"-0.018"---£546.2150000
CU37420.011.0001#40.123"0.26"Rockwell C40-C500.018"-Not Applicable-£1.00100
DB37420.031.0001#48/25"0.588"-0.028"---£672.9222700
EB37420.019.0001#40.195"0.395"-0.018"---£860.4250000
FB37420.062.0001#40.641"1.045"-0.042"---£879.845000
GB37420.037.0001#50.384"0.67"-0.032"---£855.7314450
HB37420.043.0001#60.448"0.74"-0.032"---£1,296.4112500
IB37420.075.0001#60.768"1.22"-0.047"---£868.943330
JU37420.013.0001#60.15"8/25"Rockwell C40-C500.022"-Not Applicable-£0.91100
K6DZC4#60.15"8/25"Rockwell C40-C500.022"-0.006"Not Applicable-£6.57100
K6DZC5#80.176"0.381"Rockwell C40-C500.023"-0.005"Not Applicable-£4.02100
LB37420.050.0001#80.513"22/25"-0.037"---£679.466750
MU37420.016.0001#80.176"0.381"Rockwell C40-C500.023"-Not Applicable-£1.56100
NB37420.056.0001#100.576"24/25"-0.037"---£1,253.076325
OU37420.019.0001#100.204"0.41"Rockwell C40-C500.024"-Not Applicable-£1.52100
PB37420.011.0001#120.115"0.245"-0.012"---£987.0990000
QU37420.050.00011/2"0.513"22/25"Rockwell C40-C500.037"-Not Applicable-£2.2725
RU37420.075.00013/4"0.768"1.22"Rockwell C40-C500.047"-Not Applicable-£4.1410
SU37420.037.00013/8"0.384"0.67"Rockwell C40-C500.032"-Not Applicable-£2.7850
TU37420.062.00015/8"0.641"1.045"Rockwell C40-C500.042"-Not Applicable-£2.8010
UU37420.031.00015/16"0.332"0.61"Rockwell C40-C500.034"-Not Applicable-£2.65100
VU37420.043.00017/16"0.448"0.74"Rockwell C40-C500.032"-Not Applicable-£2.2425
WU37420.056.00019/16"0.576"24/25"Rockwell C40-C500.037"-Not Applicable-£4.2625
XM37480.030.0001M33.2 mm6 mm-0.4 mm-Not ApplicableGray£2.83100
APPROVED VENDOR -

Plain Grade 410 Stainless Steel External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceClassColorPrice (inc. VAT)Pkg. Qty.
AU53460.011.0001#40.115"0.245"Rockwell C40-C500.012"0.012" to 0.018"Not Applicable-£1.9250
B1NY46#40.123"0.26"Rockwell C400.018"0.012" to 0.018"Not ApplicableSilver£4.85100
CU53460.013.0001#60.141"0.305"Rockwell C400.016"0.016" to 0.022"Not Applicable-£1.6150
DU53460.016.0001#80.168"0.365"Rockwell C400.018"-Not Applicable-£2.5450
EU53460.019.0001#100.195"0.395"Rockwell C400.018 ft.-Not Applicable-£3.6550
FU53460.050.00011/2"0.513"22/25"Rockwell C400.037"-Not Applicable-£2.9210
GU53460.025.00011/4"0.256"0.494"Rockwell C400.023"0.023" to 0.028"Not Applicable-£8.1950
HU53460.075.00013/4"0.768"1.22"Rockwell C400.047"-Not Applicable-£4.875
IU53460.037.00013/8"0.398"0.694"Rockwell C401/25"0.032" to 0.04"Not ApplicableSilver£12.3250
JU53460.062.00015/8"0.641"1.045"Rockwell C400.042"-Not Applicable-£12.4110
KU53460.031.00015/16"8/25"0.588"Rockwell C400.028"-Not Applicable-£7.0350
LU53460.043.00017/16"0.448"0.74"Rockwell C400.032"0.032" to 0.04"Not Applicable-£9.0225
APPROVED VENDOR -

Plain Phosphor Bronze Internal Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceClassPrice (inc. VAT)Pkg. Qty.
AB50462.008.0001#20.089"0.172"-0.01"--£5,670.4590000
BU50462.008.0001#20.095"1/5"Rockwell B900.015"0.01" to 0.016"Not Applicable£3.67100
CB50462.037.0001#20.384"0.67"-0.032"--£7,147.8213150
DB50462.050.0001#30.512"0.867"-0.037"--£7,747.126750
EB50462.011.0001#30.115"0.245"-0.012"--£7,765.0690000
FB50462.013.0001#40.141"0.275"-0.016"--£8,557.3290000
GU50462.011.0001#40.123"0.27"Rockwell B900.018"0.012" to 0.018"Not Applicable£6.00100
HU50462.013.0001#60.15"0.295"Rockwell B900.02"0.016" to 0.022"Not Applicable£6.92100
IB50462.016.0001#60.168"0.325"-0.018"--£5,058.8350000
JU50462.016.0001#80.176"0.34"Rockwell B900.023"0.018" to 0.023"Not Applicable£7.69100
KB50462.019.0001#80.195"0.365"-0.018"--£10,457.3250000
LU50462.019.0001#100.204"0.381"Rockwell B900.024"0.018" to 0.024"Not Applicable£25.87100
MB50462.031.0001#128/25"0.594"-0.028"--£10,755.1417200
NU50462.050.00011/2"0.53"0.9"Rockwell B900.045"0.037" to 0.045"Not Applicable£16.9725
OB50462.025.00011/4"0.256"0.46"-0.023"--£7,690.1137000
PU50462.025.00011/4"0.256"0.46"Rockwell B900.023"0.023" to 0.028"Not Applicable£19.12100
QU50462.037.00013/8"0.398"0.692"Rockwell B901/25"0.032" to 0.04"Not Applicable£25.1550
RU50462.031.00015/16"8/25"0.594"Rockwell C500.028"-Not Applicable£59.53100
APPROVED VENDOR -

Plain Silicon Bronze Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceClassHardnessPrice (inc. VAT)Pkg. Qty.
AB43150.025.0001#40.252"0.487"1/16"---£2,672.349300
B1NU87#43/25"0.209"0.025"+0.025"Not ApplicableRockwell B90£4.53100
CB43150.037.0001#60.377"17/25"3/32"---£2,243.803400
D1NU88#60.148"1/4"0.031"+0.031"Not ApplicableRockwell B90£7.34100
EU43150.013.0001#60.141"1/4"0.031"Not Rated-Rockwell B90£6.70100
FB43150.019.0001#80.193"0.334"0.047"---£5,880.2030300
GB43150.050.0001#80.502"0.869"1/8"---£4,070.571650
EU43150.016.0001#80.167"0.293"1/25"--Rockwell B90£16.82100
HB43150.062.0001#100.628"1.073"0.156"---£4,461.03900
IB43150.021.0001#100.22"0.377"0.056"---£7,277.8016600
JU43150.019.0001#100.193"0.334"0.047"-Not ApplicableRockwell B90£45.48100
EU43150.021.0001#120.22"0.377"0.056"-Not ApplicableRockwell B90£41.49100
EU43150.050.00011/2"0.502"0.869"1/8"-Not ApplicableRockwell B90£40.4625
K1NU951/2"0.641"1.073"1/8"+0.156"Not ApplicableRockwell B90£53.2625
EU43150.025.00011/4"0.252"0.487"1/16"-Not ApplicableRockwell B90£64.49100
LU43150.037.00013/8"0.377"17/25"3/32"-Not ApplicableRockwell B90£66.7650
EU43150.062.00015/8"0.628"1.073"0.156"-Not ApplicableRockwell B90£46.8210
MU43150.075.00015/8"0.766"1.265"0.156"+0.188"Not ApplicableRockwell B90£35.8110
EU43150.031.00015/16"0.314"0.583"0.0781"--Rockwell B90£49.61100
APPROVED VENDOR -

Zinc Plated Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceClassColorPrice (inc. VAT)Pkg. Qty.
AB37321.025.0001#20.256"1/2"-0.035"---£13,125.5037000
BB37480.008.0001#20.089"0.172"-0.01"---£1,676.3690000
CU37480.008.0001#20.095"1/5"Rockwell C40-C500.016"-Not Applicable-£1.43100
DB37321.031.0001#38/25"0.59"-1/25"---£5,596.4617200
EB37480.087.0001#40.894"1.364"Rockwell C38-C460.052"0.052" to 0.06"--£1,416.072500
FB37480.050.0001#40.512"0.867"-0.037"---£1,007.486750
GB37480.011.0001#40.115"0.245"-0.012"---£820.2290000
HU37480.011.0001#40.123"0.27"Rockwell C40-C500.018"-Not Applicable-£0.74100
IB37321.037.0001#40.384"0.7"-0.042"---£10,004.0313150
J6DZC6#40.123"0.27"Rockwell C40-C500.018"-0.006"Not Applicable-£3.06100
KB37321.050.0001#60.512"22/25"-0.055"---£9,420.246750
LB37480.056.0001#60.576"0.957"Rockwell C38-C460.037"0.037" to 0.045"--£1,026.735550
MU37480.013.0001#60.15"0.295"Rockwell C40-C500.022"-Not Applicable-£0.94100
NB37480.025.0001#60.256"0.46"Rockwell C40-C500.023"0.023" to 0.028"--£869.0337000
J6DZC7#60.15"0.295"Rockwell C40-C500.022"-0.006"Not Applicable-£4.00100
OB37480.013.0001#60.141"0.275"-0.016"---£1,011.9390000
J6DZC8#80.176"0.34"Rockwell C40-C500.023"-0.006"Not Applicable-£6.23100
PB37321.062.0001#816/25"1.1"-0.059"---£9,577.975000
QU37480.016.0001#80.176"0.34"Rockwell C40-C500.023"-Not Applicable-£0.94100
RB37480.031.0001#88/25"0.594"-0.028"---£582.5017200
SB37480.016.0001#80.168"0.325"-0.018"---£518.9050000
TB37480.062.0001#816/25"1.045"-0.042"---£879.145000
UB37480.037.0001#100.384"0.67"-0.032"---£886.9413150
VB37480.019.0001#100.195"0.365"-0.018"---£606.2950000
WU37480.019.0001#100.204"0.381"Rockwell C40-C500.024"-Not Applicable-£1.09100
APPROVED VENDOR -

Yellow Zinc Plated Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessColorClassPrice (inc. VAT)Pkg. Qty.
AB37060.137.0001#21.379"2.219"-0.344"--£1,172.44100
BB37060.150.0001#31.504"2.419"-3/8"--£857.4675
CB37060.175.0001#51.758"2.679"-0.389"--£640.8965
DU37060.150.00011 1/2"1.504"2.419"Rockwell C40-C503/8"-Not Applicable£42.015
EU37060.112.00011 1/8"1.129"1.847"Rockwell C460.281"YellowNot Applicable£4.935
FU37060.175.00011 3/4"1.758"2.679"Rockwell C40-C500.389"YellowNot Applicable£34.975
GU37060.137.00011 3/8"1.379"2.219"Rockwell C40-C500.344"-Not Applicable£45.785
HU37060.100.00011"1.003"1.656"Rockwell C38-C461/4"YellowNot Applicable£3.835
IU37060.050.00011/2"0.502"0.869"Rockwell C38-C461/8"YellowNot Applicable£3.0825
JU37060.025.00011/4"0.26"0.487"Rockwell C38-C461/16"YellowNot Applicable£2.23100
KU37060.200.00012"2.008"2.936"Rockwell C460.422"YellowNot Applicable£19.195
L4VPF93/4"0.753"1.265"Rockwell C38-C463/16"BlackNot Applicable-1250
RFQ
MU37060.075.00013/4"0.753"1.265"Rockwell C38-C463/16"YellowNot Applicable£3.6010
NU37060.037.00013/8"0.377"17/25"Rockwell C38-C463/32"YellowNot Applicable£2.6150
OU37060.062.00015/8"0.628"1.073"Rockwell C38-C460.156"YellowNot Applicable£2.2010
P4VPG15/8"0.628"1.073"Rockwell C38-C460.156"BlackNot Applicable£339.482
QU37060.031.00015/16"0.322"0.583"Rockwell C38-C460.0781"YellowNot Applicable£3.09100
RU37060.087.00017/8"0.878"1.459"Rockwell C38-C460.219"-Not Applicable£2.815
SU37060.043.00017/16"11/25"0.77"Rockwell C38-C460.109"YellowNot Applicable£2.4125
TU37060.056.00019/16"0.564"0.965"Rockwell C38-C460.141"YellowNot Applicable£4.1625
APPROVED VENDOR -

Plain Grade 316 Stainless Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceClassHardnessColorPrice (inc. VAT)Pkg. Qty.
AU55450.008.0001#20.088"0.172"0.02"-Not Applicable--£1.0850
BU55450.011.0001#40.114"0.209"0.025"0.025"Not Applicable--£4.0350
CU55450.013.0001#60.141"1/4"0.031"0.031"Not Applicable--£3.8350
DB55450.013.0001#60.148"1/4"0.031"+0.031"Not ApplicableRockwell C35Silver£14.301
EU55450.016.0001#80.174"0.293"1/25"1/25"Not Applicable--£4.6750
FU55450.019.0001#100.193"0.334"0.047"0.047"Not Applicable--£5.3950
GB55450.019.0001#101/5"0.334"0.047"+0.047"Not ApplicableRockwell C35Silver£28.511
HU55450.021.0001#120.22"0.377"0.056"-Not Applicable--£13.9750
IU55450.150.00011 1/2"1.504"2.419"3/8"-Not ApplicableRockwell C35-£85.255
JU55450.125.00011 1/4"1.254"2.036"0.312"-Not Applicable--£48.535
KU55450.112.00011 1/8"1.129"1.847"0.281"-Not Applicable--£22.925
LU55450.100.00011"1.003"1.656"1/4"-Not ApplicableRockwell C35-£21.225
M1NY791"1.024"1.656"1/4"-Not ApplicableRockwell C35-£29.185
NU55450.050.00011/2"0.502"0.869"1/8"-Not Applicable--£9.4010
OU55450.025.00011/4"0.252"0.487"1/16"-Not Applicable--£3.0050
PU55450.075.00013/4"0.753"1.265"3/16"-Not Applicable--£4.995
QWSHR,LOCK 3/8 SS63/8"--------1
RFQ
RU55450.037.00013/8"0.377"17/25"3/32"-Not Applicable--£10.1450
SU55450.062.00015/8"0.628"1.073"0.156"-Not Applicable--£5.1110
TU55450.031.00015/16"0.314"0.583"0.0781"-Not Applicable--£7.0650
UU55450.087.00017/8"0.878"1.459"0.219"-Not ApplicableRockwell C35-£11.675
V1NY787/8"0.894"1.459"0.219"-Not ApplicableRockwell C35-£36.6610
WU55450.043.00017/16"11/25"0.77"0.109"-Not Applicable--£7.6625
XU55450.056.00019/16"0.564"0.965"0.141"----£22.6910
FOREVERBOLT -

NL-19 Grade 18-8 Stainless Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPrice (inc. VAT)Pkg. Qty.
AFBLKW6P100#60.141"1/4"0.031"-0.005" to +0.005"Rockwell C35Silver£45.67100
BFBLKW8P100#81.67"0.293"1/25"-0.005" to +0.005"Rockwell C35Silver£46.38100
CFBLKW10P100#100.193"0.334"0.047"-0.005" to +0.005"Rockwell C35Silver£47.40100
DFBLKW1P101"1.003"1.652"1/4"-0.005" to +0.005"Rockwell C35Silver£58.2810
EFBLKW12P501/2"0.502"0.869"1/8"-0.005" to +0.005"Rockwell C35Silver£60.1350
FFBLKW14P1001/4"0.252"0.487"1/16"-0.005" to +0.005"Rockwell C35Silver£51.46100
GFBLKW34P253/4"0.753"1.264"3/16"-0.005" to +0.005"Rockwell C35Silver£60.8825
HFBLK38P1003/8"0.377"17/25"3/32"-0.005" to +0.005"Rockwell C35Silver£74.96100
IFBLKW58P255/8"0.628"1.072"0.156"-0.005" to +0.005"Rockwell C35Silver£43.5225
JFBLKW516P1005/16"0.314"0.583"0.0781"-0.005" to +0.005"Rockwell C35Silver£70.88100
KFBLKW78P107/8"0.878"1.455"0.219"-0.005" to +0.005"Rockwell C35Silver£43.6210
LFBLKW716P507/16"11/25"0.776"0.109"-0.005" to +0.005"Rockwell C35Silver£44.9950
MFBLKWM3P100M33.1 mm6.2 mm0.8 mm-0.2 mm to +0.2 mmRockwell C35Silver£46.02100
NFBLKWM4P100M44.1 mm7.6 mm0.9 mm-0.2 mm to +0.2 mmRockwell C35Silver£46.35100
OFBLKWM5P100M55.1 mm9.2 mm1.2 mm-0.2 mm to +0.2 mmRockwell C35Silver£47.38100
PFBLKWM6P100M66.1 mm11.8 mm1.6 mm-0.2 mm to +0.2 mmRockwell C35Silver£62.37100
QFBLKWM8P100M88.1 mm14.8 mm2 mm-0.2 mm to +0.2 mmRockwell C35Silver£66.45100
RFBLKWM10P50M1010.2 mm18.1 mm2.2 mm-0.2 mm to +0.2 mmRockwell C35Silver£42.9450
SFBLKWM12P50M1212.2 mm24.1 mm2.5 mm-0.2 mm to +0.2 mmRockwell C35Silver£48.0850
TFBLKWM16P25M1616.2 mm27.4 mm3.5 mm-0.2 mm to +0.2 mmRockwell C35Silver£71.5725
UFBLKWM20P25M2020.2 mm33.6 mm4 mm-0.2 mm to +0.2 mmRockwell C35Silver£62.7225
APPROVED VENDOR -

Plain Grade A2 Stainless Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessClassTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
AM51458.020.0001M22.2 mm4.5 mm0.3 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£2.8050
BSIW7X0250-100P1M2.52.7 mm5.5 mm0.4 mm to 0.8 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£6.60100
BSIW7X0260-100P1M2.62.8 mm5.5 mm0.4 mm to 0.8 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£6.94100
CM51458.030.0001M33.2 mm6 mm0.4 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£2.8250
BSIW7X0350-100P1M3.53.7 mm7 mm0.5 mm to 1 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£7.14100
DM51458.040.0001M44.3 mm8 mm0.5 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£2.3650
EM51458.050.0001M55.3 mm10 mm0.6 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£2.2350
FM51458.060.0001M66.4 mm11 mm0.7 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£3.5150
GM51458.080.0001M88.4 mm15 mm0.8 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£4.6950
HM51458.100.0001M1010.5 mm18 mm0.9 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£5.9350
IM51458.120.0001M1213 mm20.5 mm1 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£3.0725
JM51458.140.0001M1415 mm24 mm1 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£4.2725
KM51458.160.0001M1617 mm26 mm1.2 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£3.4810
LM51458.200.0001M2021 mm33 mm1.4 mmNot ApplicableInternal Tooth LockStainless SteelGrade A2£3.645
APPROVED VENDOR -

Plain Grade 410 Stainless Steel Countersunk External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessClassTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
AU51501.008.0001#2---Not ApplicableCountersunk External Tooth LockStainless SteelGrade 410£7.2150
BU51501.011.0001#40.113"0.213"0.015"Not ApplicableCountersunk External Tooth LockStainless SteelGrade 410£28.6650
CU51501.013.0001#60.14"0.289"0.017"Not ApplicableCountersunk External Tooth LockStainless SteelGrade 410£12.3250
DU51501.016.0001#80.167"0.322"0.017"Not ApplicableCountersunk External Tooth LockStainless SteelGrade 410£12.8250
EU51501.019.0001#100.195"0.354"0.02"Not ApplicableCountersunk External Tooth LockStainless SteelGrade 410£18.0550
FU51501.025.00011/4"0.255"0.454"0.02"Not ApplicableCountersunk External Tooth LockStainless SteelGrade 410£24.3850
GU51501.037.00013/8"0.383"0.765"0.028"Not ApplicableCountersunk External Tooth LockStainless SteelGrade 410£124.4550
HU51501.031.00015/16"0.318"0.599"0.023"Not ApplicableCountersunk External Tooth LockStainless SteelGrade 410£113.9750
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessColorTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
AM51460.025.0001M2.52.7 mm5.5 mm0.4 mmGraySerrated External Tooth LockStainless SteelGrade A2£3.8850
AM51460.140.0001M1415 mm24 mm1 mmGraySerrated External Tooth LockStainless SteelGrade A2£4.1825
AM51460.220.0001M2223 mm36 mm1.5 mmGraySerrated External Tooth LockStainless SteelGrade A2£3.175
APPROVED VENDOR -

Plain Grade 18-8 Stainless Steel External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceClassPrice (inc. VAT)Pkg. Qty.
AU51460.011.0001#40.115"0.245"-0.012"-Not Applicable£2.9050
BU51460.013.0001#60.141"0.305"Rockwell C45-C500.016"0.016" to 0.022"Not Applicable£5.2850
CU51460.016.0001#80.168"0.365"Rockwell C350.018"-Not Applicable£1.6350
DU51460.019.0001#100.195"0.395"Rockwell C350.018"-Not Applicable£2.2650
EU51460.050.00011/2"0.513"22/25"Rockwell C350.037"-Not Applicable£4.7810
FU51460.025.00011/4"0.256"0.494"Rockwell C20-C450.023"0.023" to 0.028"Not Applicable£8.8150
GU51460.037.00013/8"0.384"0.67"Rockwell C350.032"-Not Applicable£7.1450
HU51460.031.00015/16"8/25"0.588"Rockwell C350.028"-Not Applicable£2.4550
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessColorTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
AM37302.030.0001M33.2 mm6 mm0.4 mmGrayExternal Tooth LockSpring SteelGrade 350-425 HV10£5.29100
AM37302.040.0001M44.3 mm8 mm0.5 mmGrayExternal Tooth LockSpring SteelGrade 350-425 HV10£6.06100
AM37302.050.0001M55.3 mm10 mm0.6 mmGrayExternal Tooth LockSpring SteelGrade 350-425 HV10£6.31100
AM37302.060.0001M66.4 mm11 mm0.7 mmGrayExternal Tooth LockSpring SteelGrade 350-425 HV10£8.00100
AM37302.080.0001M88.4 mm15 mm0.8 mmGrayExternal Tooth LockSpring SteelGrade 350-425 HV10£11.34100
AM37302.100.0001M1010.5 mm18 mm0.9 mmGrayExternal Tooth LockSpring SteelGrade 350-425 HV10£11.75100
AM37302.120.0001M1213 mm20.5 mm1 mmGrayExternal Tooth LockSpring SteelGrade 350-425 HV10£17.90100
AM37302.160.0001M1617 mm26 mm1.2 mmGrayExternal Tooth LockSpring SteelGrade 350-425 HV10£49.36100
AM37302.240.0001M2425 mm38 mm1.5 mmGrayExternal Tooth LockSpring SteelGrade 350-425 HV10£114.1450
APPROVED VENDOR -

Plain Grade 2 Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceClassPrice (inc. VAT)Pkg. Qty.
AU37180.019.0001#100.193"0.35"Rockwell C380.056"0.056"Not Applicable£4.15100
BU37200.150.00011 1/2"1.504"2.159"Rockwell C463/8"3/8"Not Applicable£49.215
CU37200.087.00017/8"0.878"1.291"Rockwell C460.234"0.234"Not Applicable£10.815
DU37180.056.00019/16"0.564"0.975"Rockwell C38-C460.17"-Not Applicable£9.0625
FABORY -

Plain Spring Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessColorTypeMaterialFinishPrice (inc. VAT)Pkg. Qty.
AM37200.180.0001M1818.2 mm26.4 mm3.5 mmGraySplit LockSpring SteelPlain£5.3410
AM37200.220.0001M2222.5 mm32.9 mm4.5 mmGraySplit LockSpring SteelPlain£9.8910
AM37200.270.0001M2727.5 mm38.9 mm5 mmGraySplit LockSpring SteelPlain£15.8910
AM37200.360.0001M3636.5 mm52.2 mm7 mmGraySplit LockSpring SteelPlain£15.905
BM37000.390.0001M3939.5 mm61.2 mm6 mmGraySplit LockSpring SteelPlain£9.972
BM37000.450.0001M4545.5 mm71.2 mm7 mmGraySplit LockSpring SteelPlain£15.142
BM37000.520.0001M5253 mm83 mm8 mmGraySplit LockSpring SteelPlain£28.912
BM37000.560.0001M5657 mm87 mm8 mmGraySplit LockSpring SteelPlain£28.531
APPROVED VENDOR -

Zinc Plated Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessColorThickness ToleranceClassPrice (inc. VAT)Pkg. Qty.
AU37020.008.0001#20.088"0.172"Rockwell C40-C500.02"--Not Applicable£3.13100
BB37171.031.0001#20.314"0.619"Rockwell C380.108"--0.005" to +0.005"-£291.294
CB37183.125.0001#21.254"2.104"-0.384"---£415.48110
DU37183.009.0001#30.101"0.209"Rockwell C40-C500.031"--Not Applicable£15.58100
EB37171.011.0001#30.114"0.253"-0.034"---£8,024.4390000
FU37020.009.0001#30.101"0.195"Rockwell C40-C500.025"--Not Applicable£3.01100
GB37171.037.0001#30.377"0.738"-0.123"---£1,183.583100
HB37171.150.0001#41.504"2.627"-0.496"---£1,271.8970
EB37171.013.0001#40.141"0.314"-0.045"---£4,402.4550000
IU37171.011.0001#40.114"0.253"Rockwell C40-C500.034"--Not Applicable£6.81100
JB37171.075.0001#40.753"1.355"-0.241"---£2,597.61500
KU37020.011.0001#40.114"0.209"Rockwell C380.025"--0.005" to +0.005"Not Applicable£1.39100
LB37183.137.0001#41.379"2.301"-0.422"---£1,168.7780
MLWLIS0-40USA-100BX#40.114"0.199"Rockwell C38-C460.02"Silver+0.006"Not Applicable£2.50100
NU37183.011.0001#40.114"0.223"-0.031"--Not Applicable£4.25100
OB37171.087.0001#50.878"1.571"-0.285"---£1,279.08320
PU37020.012.0001#50.127"0.236"Rockwell C40-C500.031"--Not Applicable£2.06100
QU37183.012.0001#50.127"0.252"Rockwell C40-C501/25"--Not Applicable£5.43100
RU37183.013.0001#60.141"0.266"Rockwell C40-C501/25"--Not Applicable£5.70100
SB37183.150.0001#61.504"2.491"-0.458"---£1,215.8365
TU37020.013.0001#60.148"1/4"Rockwell C38-C460.031"--0.005" to +0.005"Not Applicable£1.33100
UB37171.100.0001#61.003"1.794"-0.33"---£824.36220
VLWLIS0-60USA-100BX#60.141"0.236"Rockwell C38-C460.025"Silver+0.006"Not Applicable£2.24100
WB37171.016.0001#60.167"3/8"-0.057"---£6,407.6941600
XU37171.013.0001#60.141"0.314"Rockwell C40-C500.045"--Not Applicable£6.44100
APPROVED VENDOR -

Zinc Plated Steel Internal and External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessClassHardnessTypeMaterialPrice (inc. VAT)Pkg. Qty.
AB37590.050.0001#40.512"1.38"0.052"--Internal And External Tooth LockSteel£3,717.056750
BB37590.037.0001#120.384"1 1/8"0.042"--Internal And External Tooth LockSteel£3,343.5613150
CU37590.050.00011/2"0.512"1.38"0.052"Not ApplicableRockwell C40-C50Internal And External Tooth LockSteel£11.8725
DU37590.037.00013/8"0.384"1 1/8"0.042"Not ApplicableRockwell C40-C50Internal And External Tooth LockSteel£10.9450
APPROVED VENDOR -

Zinc Plated Grade 2 Steel External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceClassColorPrice (inc. VAT)Pkg. Qty.
AU37420.021.0001#120.231"0.475"Rockwell C40-C500.027"0.02" to 0.027"Not ApplicableSilver£6.97100
BU37420.100.00011"1.025"1.59"Rockwell C38-C460.059"0.059" to 0.067"Not ApplicableSilver£7.245
CU37420.025.00011/4"0.267"0.51"Rockwell C40-C500.028"0.023" to 0.028"Not ApplicableSilver£7.05100
DU37420.087.00017/8"0.897"1.38"Rockwell C38-C460.052"0.052" to 0.06"Not ApplicableSilver£5.045
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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.

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