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

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Hot Dipped Galvanized Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFor Screw SizeClassHardnessPricePkg. Qty.
AU37025.150.00011 1/2"1.504"2.419"3/8"1 1/2"Not Applicable-€26.775
BU37025.175.00011 3/4"1.758"2.679"0.389"1 3/4"Not Applicable-€26.795
CU37025.137.00011 3/8"1.379"2.219"0.344"1 3/8"Not Applicable-€19.505
DU37025.250.00012 1/2"2.512"3.471"11/25"2 1/2"Not Applicable-€49.535
EU37025.200.00012"2.008"2.936"0.422"2"Not Applicable-€38.885
FU37025.043.00017/16"11/25"0.77"0.109"7/16"-Rockwell C38-C46€3.8025
APPROVED VENDOR -

Plain Grade 316 Stainless Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU55462.011.0001#40.116"0.265"Rockwell B850.015"0.012" to 0.018"#4Not Applicable€93.3950
BU55462.013.0001#60.142"0.288"Rockwell B850.017"-0.003 to +0.003#6Not Applicable€18.5150
CU55462.016.0001#80.168"0.336"Rockwell B850.02"0.018" to 0.023"#8Not Applicable€8.6150
DU55462.019.0001#100.195"0.365"Rockwell B880.018"-0.003" to +0.003"#10Not Applicable€22.9850
EU55462.025.00011/4"0.256"0.46"Rockwell B880.023"-0.0025" to +0.0025"1/4"Not Applicable€33.5950
FSIWIXX037-025BX3/8"0.384"0.692"Rockwell B850.035"0.032" to 0.04"3/8"Not Applicable€95.9325
GU55462.037.00013/8"0.384"0.67"-0.032"-3/8"Not Applicable€8.8550
HU55462.031.00015/16"8/25"0.594"-0.028"-5/16"Not Applicable€42.9150
APPROVED VENDOR -

Plain Grade 316 Stainless Steel External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU55460.009.0001#30.102"0.23"Rockwell B850.013"0.01" to 0.016"#3Not Applicable€41.4550
BU55460.011.0001#40.115"0.245"-0.012"-#4Not Applicable€21.9450
CU55460.012.0001#50.129"0.27"-0.014"-#5Not Applicable€91.5850
DU55460.013.0001#60.141"0.305"-0.016"-#6Not Applicable€112.3350
EU55460.016.0001#80.168"0.365"Rockwell B880.018"-0.0025" to +0.0025"#8Not Applicable€13.7750
FU55460.019.0001#100.195"0.395"Rockwell B880.018"-0.003" to +0.003"#10Not Applicable€20.6950
APPROVED VENDOR -

Plain Grade 410 Stainless Steel Countersunk External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFor Screw SizeClassColorThickness TolerancePricePkg. Qty.
AU51501.008.0001#2---#2Not Applicable--€75.0150
BU51501.011.0001#40.113"0.213"0.015"#4Not Applicable--€44.6150
CU51501.013.0001#60.14"0.289"0.017"#6Not ApplicableSilver-0.002" to +0.002"€15.3750
DU51501.016.0001#80.167"0.322"0.017"#8Not Applicable--€16.0050
EU51501.019.0001#100.195"0.354"0.02"#10Not Applicable--€22.5350
FU51501.025.00011/4"0.255"0.454"0.02"1/4"Not Applicable--€38.0350
GU51501.037.00013/8"0.383"0.765"0.028"3/8"Not Applicable--€194.1350
HU51501.031.00015/16"0.318"0.599"0.023"5/16"Not Applicable--€177.7750
APPROVED VENDOR -

Plain Grade 18-8 Stainless Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU51462.011.0001#40.115"0.245"Rockwell C45-C500.012"0.012" to 0.018"#4Not Applicable€8.3650
BU51462.013.0001#60.141"0.275"Rockwell C45-C500.016"0.016" to 0.022"#6Not Applicable€5.1950
CU51462.016.0001#80.168"0.325"Rockwell C45-C500.018"0.018" to 0.023"#8Not Applicable€16.2450
DU51462.019.0001#100.195"0.365"Rockwell C45-C500.018"0.018" to 0.024"#10Not Applicable€8.1250
EU51462.050.00011/2"0.512"0.867"Rockwell C45-C500.037"0.037" to 0.045"1/2"Not Applicable€15.2110
FU51462.025.00011/4"0.256"0.46"Rockwell C20-C450.023"0.023" to 0.028"1/4"Not Applicable€16.9450
GU51462.075.00013/4"0.769"1.22"Rockwell C45-C500.047"0.047" to 0.055"3/4"Not Applicable€20.015
HU51462.037.00013/8"0.384"0.67"-0.032"0.032" to 0.040"3/8"Not Applicable€32.8750
IU51462.062.00015/8"-1.045"Rockwell C20-C450.042"0.042" to 0.05"5/8"Not Applicable€29.8910
JU51462.031.00015/16"8/25"0.594"Rockwell C20-C450.028"-5/16"Not Applicable€28.3750
KU51462.056.00019/16"0.576"0.957"Rockwell C45-C500.037"0.037" to 0.045"9/16"Not Applicable€29.6910
APPROVED VENDOR -

Plain Grade 18-8 Stainless Steel External Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU51460.011.0001#40.115"0.245"-0.012"0.012" to 0.018"#4Not Applicable€3.6250
BU51460.013.0001#60.141"0.305"Rockwell C45-C500.016"0.016" to 0.022"#6Not Applicable€8.1950
CU51460.016.0001#80.168"0.365"Rockwell C350.018"-#8Not Applicable€2.0450
DU51460.019.0001#100.195"0.395"Rockwell C350.018"-#10Not Applicable€2.8150
EU51460.050.00011/2"0.513"22/25"Rockwell C350.037"-1/2"Not Applicable€5.9710
FU51460.025.00011/4"0.256"0.494"Rockwell C20-C450.023"0.023" to 0.028"1/4"Not Applicable€13.7250
GU51460.037.00013/8"0.384"0.67"Rockwell C350.032"-3/8"Not Applicable€8.9150
HU51460.031.00015/16"8/25"0.588"Rockwell C350.028"-5/16"Not Applicable€3.8250
APPROVED VENDOR -

Zinc Plated Grade 2 Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU37183.019.0001#100.193"0.35"Rockwell C380.056"0.056"#10Not Applicable€6.59100
BU37183.112.00011 1/8"1.129"1.903"Rockwell C380.345"0.345"1 1/8"Not Applicable€52.415
CU37020.137.00011 3/8"1.379"2.219"Rockwell C38-C460.344"0.344"1 3/8"Not Applicable€61.755
APPROVED VENDOR -

Plain Grade 2 Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessColorThickness ToleranceFor Screw SizePricePkg. Qty.
AU37180.019.0001#100.193"0.35"Rockwell C380.056"Black0.056"#10€6.44100
BU37200.150.00011 1/2"1.504"2.159"Rockwell C463/8"-3/8"-€42.865
CU37200.087.00017/8"0.878"1.291"Rockwell C460.234"Silver0.234"7/8"€9.175
DU37180.056.00019/16"0.564"0.975"Rockwell C38-C460.17"Black0.17"9/16"€11.3025
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Zinc Plated Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessColorThickness ToleranceFor Screw SizePricePkg. Qty.
AU37020.008.0001#20.088"0.172"Rockwell C40-C500.02"--#2€4.76100
BB37183.125.0001#21.254"2.104"-0.384"---€430.15110
CB37171.037.0001#30.377"0.738"-0.123"---€1,225.353100
DU37020.009.0001#30.101"0.195"Rockwell C40-C500.025"--#3€4.66100
EU37183.009.0001#30.101"0.209"Rockwell C40-C500.031"--#3€24.26100
FB37171.011.0001#30.114"0.253"-0.034"---€8,307.6490000
GU37171.011.0001#40.114"0.253"Rockwell C40-C500.034"--#4€10.59100
HB37171.075.0001#40.753"1.355"-0.241"---€2,689.29500
FB37171.013.0001#40.141"0.314"-0.045"---€4,557.8350000
ILWLIS0-40USA-100BX#40.114"0.199"Rockwell C38-C460.02"Silver+0.006"#4€3.13100
JU37183.011.0001#40.114"0.223"-0.031"--#4€6.62100
KB37183.137.0001#41.379"2.301"-0.422"---€1,210.0280
LB37171.150.0001#41.504"2.627"-0.496"---€1,316.7870
MU37020.011.0001#40.114"0.209"Rockwell C380.025"Silver-0.005" to +0.005"#4€2.35100
NB37171.087.0001#50.878"1.571"-0.285"---€1,324.22320
OU37183.012.0001#50.127"0.252"Rockwell C40-C501/25"--#5€8.45100
PU37020.012.0001#50.127"0.236"Rockwell C40-C500.031"--#5€3.13100
QB37171.016.0001#60.167"3/8"-0.057"---€6,633.8441600
RB37183.150.0001#61.504"2.491"-0.458"---€1,258.7465
SU37020.013.0001#60.148"1/4"Rockwell C38-C460.031"Silver-0.005" to +0.005"#6€1.89100
TLWLIS0-60USA-100BX#60.141"0.236"Rockwell C38-C460.025"Silver+0.006"#6€2.80100
UB37171.100.0001#61.003"1.794"-0.33"---€853.46220
VU37183.013.0001#60.141"0.266"Rockwell C40-C501/25"--#6€8.84100
WU37171.013.0001#60.141"0.314"Rockwell C40-C500.045"--#6€10.03100
XB37183.100.0001#81.003"1.7"-0.306"---€909.80200
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Plain Grade 316 Stainless Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceFor Screw SizeClassHardnessPricePkg. Qty.
AU55450.008.0001#20.088"0.172"0.02"-#2Not Applicable-€1.5750
BU55450.011.0001#40.114"0.209"0.025"0.025"#4Not Applicable-€5.0450
CU55450.013.0001#60.141"1/4"0.031"0.031"#6Not Applicable-€5.9850
DU55450.016.0001#80.174"0.293"1/25"0.04"#8Not Applicable-€5.8350
EU55450.019.0001#100.193"0.334"0.047"0.047"#10Not Applicable-€6.7350
FU55450.021.0001#120.22"0.377"0.056"-#12Not Applicable-€17.9250
GU55450.150.00011 1/2"1.504"2.419"3/8"-1 1/2"Not ApplicableRockwell C35€106.395
HU55450.125.00011 1/4"1.254"2.036"0.312"-1 1/4"Not Applicable-€75.435
IU55450.112.00011 1/8"1.129"1.847"0.281"-1 1/8"Not Applicable-€35.655
J1NY791"1.024"1.656"1/4"-1"Not ApplicableRockwell C35€36.425
KU55450.100.00011"1.003"1.656"1/4"-1"Not ApplicableRockwell C35€39.815
LU55450.050.00011/2"0.502"0.869"1/8"-1/2"Not Applicable-€7.2610
MU55450.025.00011/4"0.252"0.487"1/16"-1/4"Not Applicable-€5.0450
NU55450.075.00013/4"0.753"1.265"3/16"-3/4"Not Applicable-€6.945
OU55450.037.00013/8"0.377"17/25"3/32"-3/8"Not Applicable-€15.4550
PWSHR,LOCK 3/8 SS63/8"--------1
RFQ
QU55450.062.00015/8"0.628"1.073"0.156"-5/8"Not Applicable-€8.7410
RU55450.031.00015/16"0.314"0.583"0.0781"-5/16"Not Applicable-€11.8250
SU55450.087.00017/8"0.878"1.459"0.219"-7/8"Not ApplicableRockwell C35€16.735
T1NY787/8"0.894"1.459"0.219"-7/8"Not ApplicableRockwell C35€45.7510
UU55450.043.00017/16"11/25"0.77"0.109"-7/16"Not Applicable-€10.7925
VU55450.056.00019/16"0.564"0.965"0.141"-9/16"--€28.3110
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Plain Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU37000.008.0001#20.088"0.172"Rockwell C40-C500.02"-#2Not Applicable€4.35100
BB37180.225.0001#22.262"3.398"-0.496"---€731.9725
CB37170.150.0001#21.504"2.627"-0.496"---€1,529.6470
DB37200.013.0001#20.141"0.216"-0.031"---€5,575.1090000
EU37000.009.0001#30.101"0.195"Rockwell C40-C500.025"-#3Not Applicable€4.64100
FB37200.016.0001#30.167"0.267"-0.047"---€2,211.0650000
GU37170.011.0001#40.114"0.253"Rockwell C40-C500.034"-#4Not Applicable€9.94100
HB37180.250.0001#42.512"3.648"-0.496"---€663.4125
IB37170.100.0001#41.003"1.794"-0.33"---€1,706.73220
JU37180.011.0001#40.114"0.223"-0.031"--Not Applicable€5.45100
KB37170.056.0001#40.564"1.035"-0.182"---€1,125.271075
LB37000.137.0001#41.379"2.219"-0.344"---€388.37100
MB37180.137.0001#41.379"2.301"-0.422"---€1,426.0480
NU37000.011.0001#40.114"0.209"Rockwell C40-C500.025"-#4Not Applicable€1.25100
OB37170.025.0001#40.252"0.533"-0.084"---€1,780.348400
PU37200.011.0001#40.114"0.173"Rockwell C40-C500.022"-#4Not Applicable€3.66100
QU37200.012.0001#50.127"0.202"Rockwell C40-C500.031"-#5Not Applicable€3.67100
RU37000.012.0001#50.127"0.236"Rockwell C40-C500.031"-#5Not Applicable€3.52100
SB37000.250.0001#52.512"3.471"-11/25"---€641.0230
TU37180.012.0001#50.127"0.252"Rockwell C40-C501/25"-#5Not Applicable€7.22100
UB37200.019.0001#50.193"0.294"-0.047"---€1,590.8250000
VU37000.013.0001#60.141"1/4"Rockwell C40-C500.031"-#6Not Applicable€1.81100
WU37180.013.0001#60.141"0.266"-1/25"-#6Not Applicable€7.51100
XB37180.300.0001#63.012"4 4/25"-0.526"---€741.1920
YU37200.013.0001#60.141"0.216"Rockwell C40-C500.031"-#6Not Applicable€7.10100
NORD-LOCK -

Plain Grade 254 SMO Stainless Steel Wedge Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeColorPricePkg. Qty.
A1560#50.13"7/25"Rockwell C520.09"-0.01" to +0.01"#5Silver€61.3510
B1562#60.15"0.35"Rockwell C520.09"-0.01" to +0.01"#6Silver€64.2610
C1561#60.15"0.3"Rockwell C520.09"-0.01" to +0.01"#6Silver€75.6410
D1564#80.17"0.35"Rockwell C520.09"-0.01" to +0.01"#8Silver€62.0810
E1563#80.17"0.3"Rockwell C520.09"-0.01" to +0.01"#8Silver€68.6010
F1566#100.21"0.43"Rockwell C520.09"-0.01" to +0.01"#10Silver€81.5110
G1565#100.21"0.35"Rockwell C520.09"-0.01" to +0.01"#10Silver€56.9810
H16041 1/2"1.59"2.3"Rockwell C520.22"-0.02" to +0.02"1 1/2"Silver€163.981
I28341 1/4"1.35"1.91"Rockwell C520.22"-0.02" to +0.02"1 1/4"Silver€119.931
J16001 1/8"1 6/25"1.85"Rockwell C520.22"-0.02" to +0.02"1 1/8"Silver€94.931
K28351 3/8"1.47"2.17"Rockwell C520.22"-0.02" to +0.02"1 3/8"Silver€136.761
L15971"1.1"1.91"Rockwell C520.13"-0.01" to +0.01"1"Silver€87.771
M15961"1.1"1.54"Rockwell 520.13"-0.01" to +0.01"-Silver€93.992
N15811/2"0.53"1"Rockwell C520.13"-0.01" to +0.01"1/2"Silver€97.314
O15801/2"0.53"0.77"Rockwell 522/25"-0.01" to +0.01"1/2"Silver€89.416
P15691/4"7/25"0.45"Rockwell 520.09"-0.01" to +0.01"1/4"Silver€70.7010
Q15701/4"7/25"0.53"Rockwell C520.09"-0.01" to +0.01"1/4"Silver€76.5210
R15883/4"0.79"1.21"Rockwell 520.13"-0.01" to +0.01"3/4"Silver€65.313
S15893/4"0.79"1.54"Rockwell C520.13"-0.01" to +0.01"3/4"Silver€89.902
T15743/8"0.41"0.83"Rockwell C522/25"-0.01" to +0.01"3/8"Silver€85.796
U15733/8"0.41"0.65"Rockwell 522/25"-0.01" to +0.01"3/8"Silver€101.1110
V15845/8"0.67"1"Rockwell 523/25"-0.01" to +0.01"-Silver€83.354
W15855/8"0.67"1.21"Rockwell C520.1"-5/8"Silver€93.173
X15725/16"0.34"0.65"Rockwell C522/25"-0.01" to +0.01"5/16"Silver€96.1010
Y15715/16"0.34"0.53"Rockwell 522/25"-0.01" to +0.01"5/16"Silver€66.7210
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Delta Protect Steel Wedge Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeColorPricePkg. Qty.
A1206#50.13"7/25"Rockwell C460.071"-0.01" to +0.01"#5Silver€340.55200
B1512#50.13"7/25"Rockwell C460.071"-0.01" to +0.01"#5Silver€43.7920
C1207#60.15"0.3"Rockwell C460.071"-0.01" to +0.01"#6Silver€360.76200
D1514#60.15"0.35"Rockwell C460.071"-0.01" to +0.01"#6Silver€43.2320
E1513#60.15"0.3"Rockwell C460.071"-0.01" to +0.01"#6Silver€43.2320
F1208#60.15"0.35"Rockwell C460.071"-0.01" to +0.01"#6Silver€364.28200
G1209#80.17"0.3"Rockwell C460.071"-0.01" to +0.01"#8Silver€281.20200
H1212#80.17"0.35"Rockwell C460.071"-0.01" to +0.01"#8Silver€365.91200
I1515#80.17"0.3"Rockwell C460.071"-0.01" to +0.01"#8Silver€43.7920
J1516#80.17"0.35"Rockwell C460.071"-0.01" to +0.01"#8Silver€43.7920
K1517#100.21"0.35"Rockwell C460.071"-0.01" to +0.01"#10Silver€43.1720
L1518#100.21"0.43"Rockwell C460.071"-0.01" to +0.01"#10Silver€43.7920
M1218#100.21"0.43"Rockwell C460.071"-0.01" to +0.01"#10Silver€366.00200
N1213#100.21"0.35"Rockwell C460.071"-0.01" to +0.01"#10Silver€281.20200
OGDP-1131 1/2"1.523"2.196"Rockwell C40-C550.256"--Silver€450.5425
P15581 1/2"1.59"2.3"Rockwell C460.26"-0.02" to +0.02"1 1/2"Silver€38.821
Q28061 1/2"1.59"2.3"Rockwell C460.26"-0.02" to +0.02"1 1/2"Silver€835.2525
R27171 1/4"1.35"1.91"Rockwell C460.26"-0.02" to +0.02"1 1/4"Silver€614.9925
S15541 1/4"1.35"1.91"Rockwell C460.23"-0.02" to +0.02"1 1/4"Silver€30.451
TGDP-1121 1/4"1.275"1 7/8"Rockwell C40-C550.265"--Silver€294.5325
U15551 1/4"1.35"2.3"Rockwell C460.26"-0.02" to +0.02"1 1/4"Silver€38.821
V27421 1/4"1.35"2.3"-0.26"-0.02" to +0.02"1 1/4"Silver€834.2025
W13411 1/8"1 6/25"1.85"Rockwell C460.13"-0.02" to +0.02"1 1/8"Silver€882.4250
XGDP-1111 1/8"1.14"1.715"Rockwell C40-C550.256"--Silver€252.0225
Y15521 1/8"1 6/25"1.85"Rockwell C460.23"-0.02" to +0.02"1 1/8"Silver€28.271
APPROVED VENDOR -

Grade 2 Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceFor Screw SizeClassPricePkg. Qty.
AU37060.125.00011 1/4"1.254"2.036"Rockwell C380.312"0.312"1 1/4"Not Applicable€10.565
BU37025.031.00015/16"0.322"0.583"Rockwell C38-C460.0781"0.078"5/16"Not Applicable€8.52100
FOREVERBOLT -

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

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceFor Screw SizeHardnessColorPricePkg. Qty.
AFBLKW6P100#60.141"1/4"0.031"-0.005" to +0.005"#6Rockwell C35Silver€56.99100
BFBLKW8P100#81.67"0.293"1/25"-0.005" to +0.005"#8Rockwell C35Silver€57.88100
CFBLKW10P100#100.193"0.334"0.047"-0.005" to +0.005"#10Rockwell C35Silver€59.14100
DFBLKW1P101"1.003"1.652"1/4"-0.005" to +0.005"1"Rockwell C35Silver€72.7310
EFBLKW12P501/2"0.502"0.869"1/8"-0.005" to +0.005"1/2"Rockwell C35Silver€75.0450
FFBLKW14P1001/4"0.252"0.487"1/16"-0.005" to +0.005"1/4"Rockwell C35Silver€64.22100
GFBLKW34P253/4"0.753"1.264"3/16"-0.005" to +0.005"3/4"Rockwell C35Silver€75.9725
HFBLK38P1003/8"0.377"17/25"3/32"-0.005" to +0.005"3/8"Rockwell C35Silver€93.55100
IFBLKW58P255/8"0.628"1.072"0.156"-0.005" to +0.005"5/8"Rockwell C35Silver€54.3125
JFBLKW516P1005/16"0.314"0.583"0.0781"-0.005" to +0.005"5/16"Rockwell C35Silver€88.45100
KFBLKW78P107/8"0.878"1.455"0.219"-0.005" to +0.005"7/8"Rockwell C35Silver€54.4410
LFBLKW716P507/16"11/25"0.776"0.109"-0.005" to +0.005"7/16"Rockwell C35Silver€56.1450
MFBLKWM3P100M33.1 mm6.2 mm0.8 mm-0.2 mm to +0.2 mmM3Rockwell C35Silver€57.43100
NFBLKWM4P100M44.1 mm7.6 mm0.9 mm-0.2 mm to +0.2 mmM4Rockwell C35Silver€57.85100
OFBLKWM5P100M55.1 mm9.2 mm1.2 mm-0.2 mm to +0.2 mmM5Rockwell C35Silver€59.13100
PFBLKWM6P100M66.1 mm11.8 mm1.6 mm-0.2 mm to +0.2 mmM6Rockwell C35Silver€77.82100
QFBLKWM8P100M88.1 mm14.8 mm2 mm-0.2 mm to +0.2 mmM8Rockwell C35Silver€82.92100
RFBLKWM10P50M1010.2 mm18.1 mm2.2 mm-0.2 mm to +0.2 mmM10Rockwell C35Silver€53.5950
SFBLKWM12P50M1212.2 mm24.1 mm2.5 mm-0.2 mm to +0.2 mmM12Rockwell C35Silver€59.9950
TFBLKWM16P25M1616.2 mm27.4 mm3.5 mm-0.2 mm to +0.2 mmM16Rockwell C35Silver€89.3125
UFBLKWM20P25M2020.2 mm33.6 mm4 mm-0.2 mm to +0.2 mmM20Rockwell C35Silver€78.2725
FOREVERBOLT -

NL-19 Grade 316 Stainless Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceFor Screw SizeHardnessColorPricePkg. Qty.
AFB3LKW6P100#60.141"1/4"0.031"-0.005" to +0.005"#6Rockwell C35Silver€60.62100
BFB3LKW8P100#81.67"0.293"1/25"-0.005" to +0.005"#8Rockwell C35Silver€59.57100
CFB3LKW10P100#100.193"0.334"0.047"-0.005" to +0.005"#10Rockwell C35Silver€60.82100
DFB3LKW1P51"1.003"1.652"1/4"-0.005" to +0.005"1"Rockwell C35Silver€51.555
EFB3LKW12P251/2"0.502"0.869"1/8"-0.005" to +0.005"1/2"Rockwell C35Silver€49.7425
FFB3LKW14P1001/4"0.252"0.487"1/16"-0.005" to +0.005"1/4"Rockwell C35Silver€65.51100
GFB3LKW34P203/4"0.753"1.264"3/16"-0.005" to +0.005"3/4"Rockwell C35Silver€70.7020
HFB3LKW38P503/8"0.377"17/25"3/32"-0.005" to +0.005"3/8"Rockwell C35Silver€56.9650
IFB3LKW58P255/8"0.628"1.072"0.156"-0.005" to +0.005"5/8"Rockwell C35Silver€58.0125
JFB3LKW516P505/16"0.314"0.583"0.0781"-0.005" to +0.005"5/16"Rockwell C35Silver€51.4750
KFB3LKW78P107/8"0.878"1.455"0.219"-0.005" to +0.005"7/8"Rockwell C35Silver€55.7310
LFB3LKW716P257/16"11/25"0.776"0.109"-0.005" to +0.005"-Rockwell C35Silver€49.3325
MFB3LKWM3P100M33.1 mm6.2 mm0.8 mm-0.2 mm to +0.2 mmM3Rockwell C35Silver€58.71100
NFB3LKWM4P100M44.1 mm7.6 mm0.9 mm-0.2 mm to +0.2 mmM4Rockwell C35Silver€58.25100
OFB3LKWM5P100M55.1 mm9.2 mm1.2 mm-0.2 mm to +0.2 mmM5Rockwell C35Silver€59.96100
PFB3LKWM6P100M66.1 mm11.8 mm1.6 mm-0.2 mm to +0.2 mmM6Rockwell C35Silver€65.50100
QFB3LKWM8P50M88.1 mm14.8 mm2 mm-0.2 mm to +0.2 mmM8Rockwell C35Silver€40.0050
RFB3LKWM10P50M1010.2 mm18.1 mm2.2 mm-0.2 mm to +0.2 mmM10Rockwell C35Silver€53.5950
SFB3LKWM12P50M1212.2 mm24.1 mm2.5 mm-0.2 mm to +0.2 mmM12Rockwell C35Silver€62.1150
TFB3LKWM16P10M1616.2 mm27.4 mm3.5 mm-0.2 mm to +0.2 mmM16Rockwell C35Silver€26.5910
UFB3LKWM20P10M2020.2 mm33.6 mm4 mm-0.2 mm to +0.2 mmM20Rockwell C35Silver€41.8810
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFor Screw SizeColorTypeMaterialPricePkg. Qty.
AM51460.025.0001M2.52.7 mm5.5 mm0.4 mmM2.5SilverSerrated External Tooth LockStainless Steel€4.8450
AM51460.140.0001M1415 mm24 mm1 mmM14SilverSerrated External Tooth LockStainless Steel€6.7025
AM51460.220.0001M2223 mm36 mm1.5 mmM22SilverSerrated External Tooth LockStainless Steel€5.045
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessColorFor Screw SizeTypeMaterialPricePkg. Qty.
AM37480.020.0001M22.2 mm4.5 mm0.3 mmSilverM2Serrated Internal Tooth LockSpring Steel€8.50100
AM37480.025.0001M2.52.7 mm5.5 mm0.4 mmSilverM2.5Serrated Internal Tooth LockSpring Steel€8.82100
AM37480.035.0001M3.53.7 mm7 mm0.5 mmSilverM3.5Serrated Internal Tooth LockSpring Steel€7.48100
AM37480.070.0001M77.4 mm12.5 mm0.8 mmGray-Serrated Internal Tooth LockSpring Steel€17.72100
AM37480.080.0002M88.4 mm15 mm0.8 mmSilverM8Serrated Internal Tooth LockSpring Steel€21.15100
AM37480.140.0001M1415 mm24 mm1.1 mmSilverM14Serrated Internal Tooth LockSpring Steel€81.58100
AM37480.160.0001M1617 mm26 mm1.2 mmSilverM16Serrated Internal Tooth LockSpring Steel€61.69100
AM37480.180.0001M1819 mm30 mm1.4 mmSilverM18Serrated Internal Tooth LockSpring Steel€136.2150
AM37480.200.0001M2021 mm33 mm1.4 mmSilverM20Serrated Internal Tooth LockSpring Steel€62.3850
AM37480.240.0001M2425 mm38 mm1.5 mmSilverM24Serrated Internal Tooth LockSpring Steel€144.0450
-

Plain Steel Internal Tooth Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessFor Screw SizeClassColorPricePkg. Qty.
AB37320.050.0001#40.512"22/25"-0.055"---€4,173.846750
BB37320.025.0001#60.256"1/2"-0.035"---€8,976.0037000
CB37320.062.0001#616/25"1.1"-0.059"---€13,808.895000
DB37320.031.0001#88/25"0.59"-1/25"---€8,791.7217200
EB37320.037.0001#100.384"0.7"-0.042"---€8,981.1313150
CB37320.075.0001#100.768"1 6/25"-0.071"---€14,281.502970
FU37320.050.00011/2"0.512"22/25"Rockwell C40-C500.055"1/2"Not Applicable-€25.1925
GU37320.025.00011/4"0.256"1/2"Rockwell C40-C500.035"1/4"Not Applicable-€32.83100
HU37320.075.00013/4"0.768"1 6/25"Rockwell C40-C500.071"3/4"Not Applicable-€68.6810
IU37320.037.00013/8"0.384"1.7"Rockwell C40-C500.042"3/8"Not Applicable-€39.2450
JU37320.062.00015/8"16/25"1.1"Rockwell C40-C500.059"5/8"Not Applicable-€39.4710
KU37320.031.00015/16"8/25"0.59"Rockwell C40-C501/25"5/16"Not Applicable-€73.03100
CL37320.030.0001M33.2 mm6 mm-0.4 mm--Silver€5,578.7690000
LL37320.040.0001M44.3 mm8 mm-0.5 mm--Silver€2,564.6750000
ML37320.050.0001M55.3 mm10 mm-0.6 mm--Silver€3,403.4550000
NL37320.060.0001M66.4 mm11 mm-0.7 mm--Silver€2,290.6340000
OL37320.080.0001M88.4 mm15 mm-0.8 mm--Silver€1,676.3618100
PL37320.100.0001M1010.5 mm18 mm-0.9 mm--Silver€2,223.7911100
QM37320.120.0001M1213 mm20.5 mmRockwell C35-C421 mmM12Not Applicable-€14.6950
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Plain Grade 18-8 Stainless Steel Split Lock Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.HardnessThicknessThickness ToleranceResistance PropertiesFor Screw SizePricePkg. Qty.
AU51450.008.0001#20.088"0.172"Rockwell C350.02"0.02"-#2€1.6250
B1NY84#23/32"0.172"Rockwell C350.02"--#2€4.64100
C1NY83#23/32"0.172"Rockwell C350.02"--#2€19.771000
D1NY86#30.107"0.195"Rockwell C350.025"--#3€6.07100
EU51450.009.0001#30.101"0.195"Rockwell C350.025"Not Rated--€2.3850
FB51450.011.0001#43/25"0.209"Rockwell C350.025"+0.025"-#4€25.041000
GU51450.011.0001#40.114"0.209"Rockwell C320.025"--#4€2.1450
H1NY89#50.133"0.236"Rockwell C350.031"--#5€4.85100
IU51450.012.0001#50.127"0.236"Rockwell C350.031"Not RatedChemical Resistant, Corrosion Resistant, High Temperature Resistant, Nonmagnetic, Solvent Resistant#5€2.7150
JB51450.013.0001#60.148"1/4"Rockwell C350.031"+0.031"-#6€21.121000
KU51450.013.0001#60.141"1/4"Rockwell C350.031"0.031"--€2.8350
LB51450.016.0001#80.174"0.293"Rockwell C351/25"+0.04"Corrosion Resistant#8€45.371000
MU51450.016.0001#80.167"0.293"Rockwell C351/25"-Corrosion Resistant#8€2.3450
NU51450.019.0001#100.193"0.334"Rockwell C350.047"-Corrosion Resistant#10€2.7850
OB51450.019.0001#101/5"0.334"Rockwell C350.047"+0.047"--€63.071000
PU51450.021.0001#120.22"0.377"Rockwell C350.056"0.056"-#12€4.3250
Q1NY96#120.227"0.377"Rockwell C350.056"--#12€9.64100
RU51450.150.00011 1/2"1.504"2.419"Rockwell C353/8"--1 1/2"€59.035
SU51450.125.00011 1/4"1.254"2.036"Rockwell C350.312"---€50.535
TU51450.112.00011 1/8"1.129"1.847"Rockwell C350.281"---€15.445
U1PA161"1.024"1.656"Rockwell C351/4"--1"€58.2710
VU51450.100.00011"1.003"1.656"Rockwell C351/4"-Corrosion Resistant1"€16.595
WU51450.050.00011/2"0.502"0.869"Rockwell C351/8"-Corrosion Resistant1/2"€5.7510
XU51390.025.00011/4"0.252"0.363"Rockwell C350.0781"0.078"-1/4"€10.6550
YU51450.025.00011/4"0.252"0.487"Rockwell C351/16"-Corrosion Resistant1/4"€5.3850
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFor Screw SizeColorTypeMaterialPricePkg. Qty.
AM37420.020.0001M22.2 mm4.5 mm0.3 mmM2SilverSerrated External Tooth LockSpring Steel€7.06100
AM37420.025.0001M2.52.7 mm5.5 mm0.4 mmM2.5SilverSerrated External Tooth LockSpring Steel€9.74100
AM37420.035.0001M3.53.7 mm7 mm0.5 mmM3.5SilverSerrated External Tooth LockSpring Steel€8.80100
AM37420.050.0002M55.3 mm10 mm0.6 mmM5SilverSerrated External Tooth LockSpring Steel€13.20100
AM37420.080.0002M88.4 mm15 mm0.8 mmM8SilverSerrated External Tooth LockSpring Steel€19.27100
AM37420.110.0001M1111.5 mm19.5 mm0.9 mmM11SilverSerrated External Tooth LockSpring Steel€32.1150
AM37420.140.0001M1415 mm24 mm1 mmM14SilverSerrated External Tooth LockSpring Steel€42.4050
AM37420.180.0001M1819 mm30 mm1.4 mmM18SilverSerrated External Tooth LockSpring Steel€70.7025
AM37420.270.0001M2728 mm44 mm1.6 mmM27SilverSerrated External Tooth LockSpring Steel€32.7810
AM37420.300.0001M3031 mm48 mm1.6 mmM30SilverSerrated External Tooth LockSpring Steel€20.405
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.