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, Vulcan-Hart,... Read More

APPROVED VENDOR -

A2 Stainless (Comparable to 18-8 Stainless Steel) Internal Tooth Lock Washer

APPROVED VENDOR 6FE83A
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
A6FE83M2.52.7mm5.5"0.4 to 0.8mm SGD 11.26
A6FE85M2.62.8mm5.5"0.4 to 0.8mm SGD 11.84
A6FE89M3.53.7mm7mm0.5 to 1mm SGD 12.19
APPROVED VENDOR -

Split Lock Washer

APPROVED VENDOR U37020.150.0001A
APPROVED VENDOR U37020.175.0001B
APPROVED VENDOR U37020.112.0001C
APPROVED VENDOR U37020.137.0001D
APPROVED VENDOR U37020.200.0001E
APPROVED VENDOR M37020.070.0001F
APPROVED VENDOR M37020.120.0001G
APPROVED VENDOR M37020.140.0001H
APPROVED VENDOR M37020.160.0001I
APPROVED VENDOR M37020.180.0001J
APPROVED VENDOR M37020.200.0001K
APPROVED VENDOR M37020.220.0001L
APPROVED VENDOR M37020.240.0001M
APPROVED VENDOR M37020.300.0001N
APPROVED VENDOR M37020.360.0001O
StyleModelFits Bolt SizesInside Dia.Outside Dia.Rockwell HardnessSizeThicknessPrice (inc. GST)
AU37020.150.00011.5"1.504"2.419"C38 to C46-0.375" SGD 15.09
BU37020.175.00011.75"1.758"2.679"-1.75mm0.389" SGD 50.71
CU37020.112.00011.125"1.129"1.847"C38 to C46-0.281" SGD 9.58
DU37020.137.00011.375"1.379"2.219"C38 to C46-0.344" SGD 21.20
EU37020.200.00012"2.008"2.936"-2"0.422" SGD 51.31
FM37020.070.0001M77.1mm12.8mmC38 to C46-1.6mm SGD 6.98
GM37020.120.0001M1212.2mm21.1mmC44 to C51-2.5mm SGD 5.17
HM37020.140.0001M1414.2mm24.1mmC44 to C51-3mm SGD 10.47
IM37020.160.0001M1616.2mm27.4mmC44 to C51-3.5mm SGD 5.59
JM37020.180.0001M1818.2mm29.4mmC44 to C51-3.5mm SGD 6.85
KM37020.200.0001M2020.2mm33.6mmC44 to C51-4mm SGD 5.80
LM37020.220.0001M2222.5mm35.9mmC38 to C46-4mm SGD 9.58
MM37020.240.0001M2424.5mm40mmC44 to C51-5mm SGD 9.58
NM37020.300.0001M3030.5mm48.2mmC38 to C46-6mm SGD 6.83
OM37020.360.0001M3636.5mm58.2mmC38 to C46-6mm SGD 10.35
GRAINGER -

Carbon Steel Helical Regular Lock Washer

GRAINGER B37020.100.0001A
GRAINGER B37020.050.0001B
GRAINGER B37020.075.0001C
GRAINGER B37020.062.0001D
GRAINGER B37020.087.0001E
StyleModelFits Bolt SizesInside Dia.Outside Dia.SizeThicknessPrice (inc. GST)
AB37020.100.00011"1.003"1.656"1"0.25" SGD 269.98
BB37020.050.00011/2"0.502"0.869"1/2"0.125" SGD 218.61
CB37020.075.00013/4"0.753"1.265"3/4"0.188" SGD 178.69
DB37020.062.00015/8"0.628"1.073"5/8"0.156" SGD 214.23
EB37020.087.00017/8"0.878"1.459"7/8"0.219" SGD 298.18
APPROVED VENDOR -

Steel Extra Duty Split Lock Washer

APPROVED VENDOR U37170.011.0001A
APPROVED VENDOR U37170.050.0001B
APPROVED VENDOR U37170.150.0001C
APPROVED VENDOR U37170.125.0001D
APPROVED VENDOR U37170.112.0001E
APPROVED VENDOR U37170.100.0001F
APPROVED VENDOR U37170.087.0001G
APPROVED VENDOR U37170.075.0001H
APPROVED VENDOR U37170.016.0001I
APPROVED VENDOR U37170.056.0001J
APPROVED VENDOR U37170.062.0001K
APPROVED VENDOR U37170.043.0001L
APPROVED VENDOR U37170.031.0001M
APPROVED VENDOR U37170.025.0001N
APPROVED VENDOR U37170.019.0001O
APPROVED VENDOR U37171.016.0001P
APPROVED VENDOR U37171.013.0001Q
APPROVED VENDOR U37171.011.0001R
APPROVED VENDOR U37171.019.0001S
APPROVED VENDOR U37171.025.0001T
APPROVED VENDOR U37171.031.0001U
APPROVED VENDOR U37171.043.0001V
APPROVED VENDOR U37171.056.0001W
APPROVED VENDOR U37171.062.0001X
APPROVED VENDOR U37171.075.0001Y
StyleModelFinishFits Bolt SizesInside Dia.Outside Dia.SizeThicknessPrice (inc. GST)
AU37170.011.0001Plain#40.114"0.253"-0.034" SGD 13.19
BU37170.050.0001Plain1/2"0.502"0.935"-0.162" SGD 7.29
CU37170.150.0001Plain1.5"1.504"2.627"-0.496" SGD 170.22
DU37170.125.0001Plain1.25"1.254"2.222"-0.417" SGD 152.48
EU37170.112.0001Plain1.125"1.129"2.013"-0.375" SGD 316.20
FU37170.100.0001Plain1"1.003"1.794"-0.33" SGD 56.84
GU37170.087.0001Plain7/8"0.878"1.571"-0.285" SGD 4.68
HU37170.075.0001Plain3/4"0.753"1.355"-0.241" SGD 11.65
IU37170.016.0001Plain#80.167"0.375"-0.057" SGD 25.98
JU37170.056.0001Plain9/16"0.564"1.035"-0.182" SGD 38.33
KU37170.062.0001Plain5/8"0.628"1.151"-0.202" SGD 7.78
LU37170.043.0001Plain7/16"0.440"0.836"-0.143" SGD 22.31
MU37170.031.0001Plain5/16"0.314"0.619"5/16"0.108" SGD 59.92
NU37170.025.0001Plain1/4"0.252"0.533"1/4"0.084" SGD 31.85
OU37170.019.0001Plain#100.193"0.434"-0.068" SGD 25.56
PU37171.016.0001Zinc#80.167"0.375"-0.057" SGD 23.35
QU37171.013.0001Zinc#60.141"0.314"-0.045" SGD 13.33
RU37171.011.0001Zinc#40.114"0.253"-0.034" SGD 14.05
SU37171.019.0001Zinc#100.193"0.434"-0.068" SGD 39.53
TU37171.025.0001Zinc1/4"0.252"0.533"1/4"0.084" SGD 7.56
UU37171.031.0001Zinc5/16"0.314"0.619"5/16"0.108" SGD 10.83
VU37171.043.0001Zinc7/16"0.440"0.836"-0.143" SGD 4.55
WU37171.056.0001Zinc9/16"0.564"1.035"-0.182" SGD 40.07
XU37171.062.0001Zinc5/8"0.628"1.151"-0.202" SGD 8.55
YU37171.075.0001Zinc3/4"0.753"1.355"-0.241" SGD 84.59
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APPROVED VENDOR -

Steel Standard Split Lock Washer

APPROVED VENDOR U37025.112.0001A
APPROVED VENDOR U37025.100.0001B
APPROVED VENDOR U37025.087.0001C
APPROVED VENDOR U37025.075.0001D
APPROVED VENDOR U37025.062.0001E
APPROVED VENDOR U37025.050.0001F
APPROVED VENDOR U37025.037.0001G
APPROVED VENDOR U37025.150.0001H
APPROVED VENDOR U37000.008.0001I
APPROVED VENDOR U37000.112.0001J
APPROVED VENDOR U37000.137.0001K
APPROVED VENDOR M37000.240.0001L
APPROVED VENDOR U37000.300.0001M
APPROVED VENDOR M37000.420.0001N
APPROVED VENDOR M37000.360.0001O
APPROVED VENDOR M37000.330.0001P
APPROVED VENDOR M37000.070.0001Q
APPROVED VENDOR M37000.300.0001R
APPROVED VENDOR U37000.009.0001S
APPROVED VENDOR M37000.270.0001T
APPROVED VENDOR M37000.220.0001U
APPROVED VENDOR U37000.087.0001V
APPROVED VENDOR M37000.120.0001W
APPROVED VENDOR M37000.140.0001X
APPROVED VENDOR M37000.160.0001Y
StyleModelFinishFits Bolt SizesInside Dia.Outside Dia.Rockwell HardnessSizeThicknessPrice (inc. GST)
AU37025.112.0001Galvanized1.125"1.129"1.847"C38 to C46-0.281" SGD 16.87
BU37025.100.0001Galvanized1"1.003"1.656"C38 to C46-0.25" SGD 8.20
CU37025.087.0001Galvanized7/8"0.878"1.459"C38 to C46-0.219" SGD 5.71
DU37025.075.0001Galvanized3/4"0.753"1.265"C32-0.188" SGD 5.80
EU37025.062.0001Galvanized5/8"0.628"1.073"C38 to C46-0.156" SGD 4.30
FU37025.050.0001Galvanized1/2"0.502"0.869"C38 to C46-0.125" SGD 5.86
GU37025.037.0001Galvanized3/8"0.377"0.68"C35-0.094" SGD 6.54
HU37025.150.0001Hot Dipped Galvanized1.5"1.504"2.419"-1.5"0.375" SGD 35.43
IU37000.008.0001Plain#20.088"0.172"--0.02" SGD 5.80
JU37000.112.0001Plain1.125"1.129"1.847"C38 to C46-0.281" SGD 7.80
KU37000.137.0001Plain1.375"1.379"2.219"C38 to C46-0.344" SGD 28.46
LM37000.240.0001PlainM2424.5mm40mmC44 to C51-5mm SGD 7.70
MU37000.300.0001Plain3"3.012"4.074"C38 to C46-0.458" SGD 92.85
NM37000.420.0001PlainM4242.5mm68.2mmC38 to C46-7mm SGD 20.99
OM37000.360.0001PlainM3636.5mm58.2mmC38 to C46-6mm SGD 11.67
PM37000.330.0001PlainM3333.5mm55.2mmC38 to C46-6mm SGD 13.97
QM37000.070.0001PlainM77.1mm12.8mmC38 to C46-1.6mm SGD 10.83
RM37000.300.0001PlainM3030.5mm48.2mmC38 to C46-6mm SGD 12.00
SU37000.009.0001Plain#30.101"0.195"--0.025" SGD 6.23
TM37000.270.0001PlainM2727.5mm43mmC38 to C46-5mm SGD 9.83
UM37000.220.0001PlainM2222.5mm35.9mmC38 to C46-4mm SGD 13.64
VU37000.087.0001Plain7/8"0.878"1.459"C38 to C46-0.219" SGD 4.30
WM37000.120.0001PlainM1212.2mm21.1mmC44 to C51-2.5mm SGD 6.08
XM37000.140.0001PlainM1414.2mm24.1mmC44 to C51-3mm SGD 9.23
YM37000.160.0001PlainM1616.2mm27.4mmC44 to C51-3.5mm SGD 6.97
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APPROVED VENDOR -

A4 Stainless (Comparable to 316 Stainless Steel) Standard Split Lock Washer

APPROVED VENDOR 6FA73A
APPROVED VENDOR M55450.140.0001B
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness TolerancePrice (inc. GST)
A6FA73M3.53.6mm6.7mm0.8 mm+/-0.10mm SGD 12.38
BM55450.140.0001M1414.2mm24.1mm3mm+/-0.15mm SGD 17.37
BM55450.240.0001M2424.5mm40mm5mm+/-0.20mm SGD 16.77
APPROVED VENDOR -

Steel External Tooth Lock Washer

APPROVED VENDOR 6DZC4A
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness TolerancePrice (inc. GST)
A6DZC4#60.150"0.32"0.022"-0.006" SGD 11.22
A6DZC5#80.176"0.381"0.023"-0.005" SGD 6.97
APPROVED VENDOR -

Carbon Steel Hi Collar Split Lock Washer

APPROVED VENDOR M37200.030.0001A
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
AM37200.030.0001M33.1mm5.6mm1 mm SGD 10.62
AM37200.040.0001M44.1mm7mm1.2mm SGD 7.16
AM37200.050.0001M55.1mm8.8mm1.6mm SGD 10.62
AM37200.060.0001M66.1mm9.9mm1.6mm SGD 3.99
AM37200.080.0001M88.1mm12.7mm2mm SGD 6.93
AM37200.100.0001M1010.2mm16 mm2.5mm SGD 5.94
APPROVED VENDOR -

Steel Internal Tooth Lock Washer

APPROVED VENDOR 6DZC6A
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness TolerancePrice (inc. GST)
A6DZC6#40.123"0.27"0.018"-0.006" SGD 6.83
A6DZC7#60.150"0.295"0.022"-0.006" SGD 6.83
A6DZC8#80.176"0.34"0.023"-0.006" SGD 10.83
A6DZC9#100.204"0.381"0.024"-0.006" SGD 10.51
A6DZD01/4"0.267"0.478"0.028"-0.005" SGD 14.18
APPROVED VENDOR -

Carbon Steel Internal Tooth, Open Perimeter Lock Washer

APPROVED VENDOR M37320.030.0001A
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
AM37320.030.0001M33.2mm6mm0.4 to 0.8mm SGD 7.89
AM37320.040.0001M44.3mm8mm0.5 to 1mm SGD 6.91
AM37320.050.0001M55.3mm10mm0.6 to 1.2mm SGD 9.38
AM37320.060.0001M66.4mm11mm0.7 to 1.4mm SGD 8.84
AM37320.080.0001M88.4mm15mm0.8 to 1.6mm SGD 17.16
AM37320.100.0001M1010.5mm18mm0.9 to 1.8mm SGD 24.88
APPROVED VENDOR -

Spring Steel Internal Tooth Lock Washer

APPROVED VENDOR 6FY19A
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
A6FY19M22.2mm4.5"0.3 to 0.6mm SGD 11.55
A6FY21M2.52.7mm5.5"0.4 to 0.8mm SGD 12.19
A6FY23M2.62.8mm5.5"0.4 to 0.8mm SGD 10.25
A6FY26M3.53.7mm7mm0.5 to 1mm SGD 8.01
A6FY41M1415mm24mm1 to 2mm SGD 72.03
A6FY43M1617mm26mm1.2 to 2.4mm SGD 79.81
A6FY45M1819mm30mm1.4 to 2.8mm SGD 63.15
A6FY47M2021mm33mm1.4 to 2.8mm SGD 78.57
APPROVED VENDOR -

A2 Stainless (Comparable to 18-8 Stainless Steel) External Tooth, Closed Perimeter Lock Washer

APPROVED VENDOR M51460.100.0001A
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
AM51460.100.0001M1010.5mm18mm0.9 to 2.7mm SGD 8.42
AM51460.160.0001M1617mm26mm1.2 to 3.6mm SGD 4.84
APPROVED VENDOR -

SAE 1050-1065 Spring Steel Standard Split Lock Washer

APPROVED VENDOR 6DYU7A
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness TolerancePrice (inc. GST)
A6DYU7#100.200"0.334"0.047"0.047 to 0.062" SGD 2.81
A6DYU91/4"0.260"0.487"0.062"0.062 to 0.109" SGD 3.08
A6DYV13/8"0.385"0.68"0.094"0.094 to 0.141" SGD 7.43
APPROVED VENDOR -

Spring Steel Standard Split Lock Washer

APPROVED VENDOR 6FB41A
APPROVED VENDOR 6FB73B
StyleModelFinishFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
A6FB41Furnace BlackM2.52.6mm5.1mm0.6 mm SGD 6.02
A6FB39Furnace BlackM22.1mm4.4mm0.5 mm SGD 5.98
A6FB43Furnace BlackM2.62.7mm5.2mm0.6 mm SGD 6.00
B6FB73ZincM2.52.6mm5.1mm0.6 mm SGD 7.58
APPROVED VENDOR -

Carbon Steel Internal Tooth, Type A Lock Washer

APPROVED VENDOR U37480.008.0001A
APPROVED VENDOR U37480.011.0001B
APPROVED VENDOR U37480.013.0001C
APPROVED VENDOR U37480.016.0001D
APPROVED VENDOR U37480.019.0001E
APPROVED VENDOR U37480.021.0001F
APPROVED VENDOR U37480.025.0001G
APPROVED VENDOR U37480.031.0001H
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
AU37480.008.0001#20.095"0.2"0.016" SGD 2.55
BU37480.011.0001#40.123"0.27"0.018" SGD 1.26
CU37480.013.0001#60.150"0.295"0.022" SGD 1.61
DU37480.016.0001#80.176"0.34"0.023" SGD 1.61
EU37480.019.0001#100.204"0.381"0.024" SGD 1.86
FU37480.021.0001#120.231"0.41"0.027" SGD 2.81
GU37480.025.00011/4"0.267"0.478"0.028" SGD 3.64
HU37480.031.00015/16"0.332"0.61"0.034" SGD 5.20
APPROVED VENDOR -

Carbon Steel Internal/External Tooth, Type A Lock Washer

APPROVED VENDOR U37590.011.0001A
APPROVED VENDOR U37590.013.0001B
APPROVED VENDOR U37590.016.0001C
APPROVED VENDOR U37590.019.0001D
APPROVED VENDOR U37590.025.0001E
APPROVED VENDOR U37590.031.0001F
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
AU37590.011.0001#40.123"0.475"0.021" SGD 3.46
BU37590.013.0001#60.150"0.51"0.028" SGD 4.45
CU37590.016.0001#80.176"0.61"0.034" SGD 6.00
DU37590.019.0001#100.204"0.61"0.034" SGD 10.85
EU37590.025.00011/4"0.267"0.76"0.04" SGD 17.76
FU37590.031.00015/16"0.332"0.9"0.04" SGD 25.75
APPROVED VENDOR -

Carbon Steel External Tooth, Type A Lock Washer

APPROVED VENDOR U37420.011.0001A
APPROVED VENDOR U37420.013.0001B
APPROVED VENDOR U37420.016.0001C
APPROVED VENDOR U37420.019.0001D
APPROVED VENDOR U37420.021.0001E
APPROVED VENDOR U37420.025.0001F
APPROVED VENDOR U37420.031.0001G
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
AU37420.011.0001#40.123"0.26"0.018" SGD 1.70
BU37420.013.0001#60.150"0.32"0.022" SGD 1.55
CU37420.016.0001#80.176"0.381"0.023" SGD 1.66
DU37420.019.0001#100.204"0.41"0.024" SGD 2.69
EU37420.021.0001#120.231"0.475"0.027" SGD 4.18
FU37420.025.00011/4"0.267"0.51"0.028" SGD 3.89
GU37420.031.00015/16"0.332"0.61"0.034" SGD 4.53
APPROVED VENDOR -

Carbon Steel External Tooth, Closed Perimeter Lock Washer

APPROVED VENDOR M37480.030.0001A
APPROVED VENDOR M37420.050.0001B
APPROVED VENDOR M37480.050.0001C
APPROVED VENDOR M37480.060.0001D
APPROVED VENDOR M37420.080.0001E
APPROVED VENDOR M37480.080.0001F
APPROVED VENDOR M37420.120.0001G
APPROVED VENDOR M37420.200.0001H
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
AM37480.030.0001M33.2mm6mm0.4mm SGD 4.84
AM37480.040.0001M44.3mm8mm0.5 mm SGD 6.69
BM37420.050.0001M55.3mm10mm0.6 mm SGD 7.99
CM37480.050.0001M55.3mm10mm0.6 mm SGD 10.39
DM37480.060.0001M66.4mm11mm0.7mm SGD 6.52
EM37420.080.0001M88.4mm15mm0.8 mm SGD 16.50
FM37480.080.0001M88.4mm15mm0.8 mm SGD 17.55
GM37420.120.0001M1213mm20.5mm1 mm SGD 14.84
HM37420.200.0001M2051mm33mm1.4mm SGD 33.84
AM37420.240.0001M2425mm38mm1.5mm SGD 39.24
APPROVED VENDOR -

Steel External Tooth, Closed Perimeter Lock Washer

APPROVED VENDOR M37420.030.0001A
APPROVED VENDOR M37420.040.0001B
APPROVED VENDOR M37420.051.0001C
APPROVED VENDOR M37420.060.0001D
APPROVED VENDOR M37420.082.0001E
APPROVED VENDOR M37420.100.0001F
APPROVED VENDOR M37420.160.0001G
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
AM37420.030.0001M33.2mm6mm0.4mm SGD 9.48
BM37420.040.0001M44.3mm8mm0.5 mm SGD 9.98
CM37420.051.0001M5.15.1mm9mm0.5 mm SGD 7.99
DM37420.060.0001M66.4mm11mm0.7mm SGD 9.71
EM37420.082.0001M8.28.2mm14mm0.8 mm SGD 10.22
FM37420.100.0001M1010.5mm18mm0.9mm SGD 9.42
GM37420.160.0001M1617mm26mm1.2mm SGD 35.00
APPROVED VENDOR -

A2 Stainless Steel External Tooth, Closed Perimeter Lock Washer

APPROVED VENDOR M51460.051.0001A
APPROVED VENDOR M51460.120.0001B
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
AM51460.051.0001M55.1mm9mm0.5 mm SGD 11.18
AM51460.082.0001M88.2mm14mm0.8 mm SGD 9.13
BM51460.120.0001M1213mm20.5mm1 mm SGD 6.62
APPROVED VENDOR -

Split Lock Washer, Steel, Hi Collar

APPROVED VENDOR U37200.011.0001A
APPROVED VENDOR M37200.160.0001B
APPROVED VENDOR U37200.037.0001C
APPROVED VENDOR U37200.025.0001D
APPROVED VENDOR U37200.019.0001E
APPROVED VENDOR U37200.012.0001F
APPROVED VENDOR M37200.300.0001G
APPROVED VENDOR U37200.013.0001H
APPROVED VENDOR M37200.200.0001I
APPROVED VENDOR M37200.140.0001J
APPROVED VENDOR M37200.240.0001K
APPROVED VENDOR M37200.120.0001L
APPROVED VENDOR U37200.150.0001M
APPROVED VENDOR U37200.016.0001N
APPROVED VENDOR U37200.031.0001O
APPROVED VENDOR U37200.050.0001P
APPROVED VENDOR U37200.062.0001Q
APPROVED VENDOR U37200.043.0001R
APPROVED VENDOR U37200.087.0001S
APPROVED VENDOR U37200.075.0001T
APPROVED VENDOR U37200.100.0001U
APPROVED VENDOR U37200.125.0001V
APPROVED VENDOR M37220.050.0001W
APPROVED VENDOR M37220.060.0001X
APPROVED VENDOR M37220.040.0001Y
StyleModelFinishFits Bolt SizesInside Dia.Outside Dia.Rockwell HardnessSizeThicknessPrice (inc. GST)
AU37200.011.0001Plain#40.114"0.173"--0.022" SGD 5.40
BM37200.160.0001PlainM1616.2mm24.4mmC44 to C51-3.5mm SGD 10.23
CU37200.037.0001Plain3/8"0.377"0.55"C46-0.125" SGD 4.02
DU37200.025.0001Plain1/4"0.252"0.363"-1/4"0.078" SGD 2.88
EU37200.019.0001Plain#100.193"0.294"--0.047" SGD 4.89
FU37200.012.0001Plain#50.127"0.202"--0.03" SGD 4.22
GM37200.300.0001PlainM3030.5mm44.1mmC38 to C46-6mm SGD 17.84
HU37200.013.0001Plain#60.141"0.216"--0.03" SGD 9.40
IM37200.200.0001PlainM2020.2mm30.6mmC38 to C46-4.5mm SGD 10.04
JM37200.140.0001PlainM1414.2mm21.1mmC38 to C46-3mm SGD 20.20
KM37200.240.0001PlainM2424.5mm35.9mmC38 to C46-5mm SGD 12.17
LM37200.120.0001PlainM1212.2mm18mmC44 to C51-2.5mm SGD 12.79
MU37200.150.0001Plain1.5"1.504"2.159"C46-0.375" SGD 38.10
NU37200.016.0001Plain#80.167"0.267"--0.047" SGD 6.50
OU37200.031.0001Plain5/16"0.314"0.457"-5/16"0.093" SGD 4.02
PU37200.050.0001Plain1/2"0.502"0.733"C46-0.172" SGD 4.57
QU37200.062.0001Plain5/8"0.628"0.917"C46-0.203" SGD 3.44
RU37200.043.0001Plain7/16"0.440"0.644"C46-0.14" SGD 2.98
SU37200.087.0001Plain7/8"0.878"1.291"C46-0.234" SGD 4.20
TU37200.075.0001Plain3/4"0.753"1.105"C46-0.218" SGD 5.11
UU37200.100.0001Plain1"1.003"1.478"C46-0.25" SGD 6.44
VU37200.125.0001Plain1.25"1.254"1.79"C46-0.313" SGD 7.80
WM37220.050.0001ZincM55.1mm8.8mmC38 to C46-1.6mm SGD 5.80
XM37220.060.0001ZincM66.1mm9.9mmC38 to C46-1.6mm SGD 3.23
YM37220.040.0001ZincM44.1mm7mmC38 to C46-1.2mm SGD 7.89
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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.

Features

  • Lock washers work in conjunction with threaded fasteners (like nuts) to prevent loosening.
  • Helical-shaped lock washers, spring lock washers & split lock washers get activated at the slightest pressure and offer a spring action.
  • Selected lock washers have serrations on their external grip surfaces (top & bottom, or just the top) for extra gripping power. This prevents loosening / shifting due to high vibration.
  • Some Belleville spring lock washers feature smaller outside diameters compared to standard spring lock washers for fitting under socket head cap screws.
  • Lock washers conform to standards like ASME (American Society of Mechanical Engineers), DIN (German Institute for Standardization), military specifications and NAS (National Aerospace Standards).
  • Most washers come in packs containing multiple pieces for easy replacement.

Fabory Lock Washers:

  • These lock washers are made of spring steel, stainless spring steel, stainless steel, aluminium, bronze, phosphor bronze, silicon bronze or steel for use in diverse environments & operations.
  • They are available in helical spring, toothed, wedge, conical spring, contact, curved locking edge, curved spring & wave spring styles.

Disc-Lock Washer Bolts:

  • Disc-Lock washers use the wedge-locking system for preventing the loosening of bolts & maintaining joint integrity in high-stress, corrosive & vibration-sensitive applications.
  • Disc-Lock washers feature two pre-assembled washer-shaped pieces having inclined cams on one side and ridges on the other side. After installation, these two cam sides mate together and get placed between the nut & the joint material.
  • When the nut attempts to rotate loose upon vibration, the interlocking cams & the non-slip ridges of these Disc-Lock washers create a jamming effect & prevent loosening.
  • They have Delta-Protekt coating for high corrosion resistance.

Metric Blue Split Lock Washers:

  • These split lock washers have high collars for more holding surface.
  • They have a blue-coloured coating for easy metric identification.

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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