Flat Washers

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Flat washers are used with threaded fasteners for distributing the load uniformly and reducing frictional losses during screw tightening. These units are used for providing spacing and...Read more

StyleModelFits Bolt SizesThicknessInside Dia.FinishWasher TypeMaterial
AAB241-5/8SS3165/8"1/4"9/16"GalvanizedLocated WasherStainless Steel
RFQ
AAB241-5/16SS5/16"1/8"-Silver GalvanizedLocated WasherStainless Steel
RFQ
StyleModelInside Dia.Fits Bolt SizesOutside Dia.ThicknessWasher TypeMaterial
AE147-1/2SS61/2"1/2"--Round WasherStainless Steel
RFQ
AE147-1/2-SS9/16"1/2"1 3/8"0.132"Round WasherStainless Steel
RFQ
APPROVED VENDOR -

Galvanized Steel Diamond Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessHardnessWasher TypeMaterialFinishPricePkg. Qty.
AZ8962D1"1 1/16"2"1/4"Rockwell B55Diamond WasherSteelGalvanized€17.852
BZ8954D1/2"9/16"2"1/4"Rockwell B55Diamond WasherSteelGalvanized€17.092
CZ8950D1/4"5/16"2"1/4"Rockwell B55Diamond WasherSteelGalvanized€16.422
DZ8958D3/4"0.812"2"1/4"Rockwell B55Diamond WasherSteelGalvanized€17.852
EZ8952D3/8"7/16"2"1/4"Rockwell B55Diamond WasherSteelGalvanized€16.422
FZ8956D5/8"11/16"2"1/4"Rockwell B55Diamond WasherSteelGalvanized€17.092
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Plain Grade 18-8 Stainless Steel Standard Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessTensile StrengthColorPricePkg. Qty.
AZ9150#00.063"1/8"1/64"-0.004" to +0.005"Rockwell B8090000 psi-€15.7625
BWASB#0W8#00.068"1/4"0.022" to 0.028"-0.014" to +0.005"Rockwell B8090000 psiSilver€10.591
CWASB#1W8#10.084"9/32"0.028" to 0.036"-0.014" to +0.005"Rockwell B8090000 psiSilver€10.4910
DWASB80W8#11 1/16"3"0.146" to 0.174"-0.02" to +0.005"Rockwell B8090000 psiSilver€71.862
EWASB#1N8#10.084"5/32"0.022" to 0.028"-0.014" to +0.005"Rockwell B8090000 psiSilver€13.5810
FWASB#1R8#10.084"7/32"0.022" to 0.028"-0.014" to +0.005"Rockwell B8090000 psiSilver€12.3310
GWASB80R8#11 1/16"2 1/2"0.146" to 0.174"-0.02" to +0.005"Rockwell B8090000 psiSilver€45.752
HWASB80N8#11 1/16"1 3/4"0.09" to 0.112"-0.014" to +0.005"Rockwell B8090000 psiSilver€17.471
IZ9151#10.078"5/32"1/64"-0.004" to +0.005"Rockwell B8090000 psi-€15.2725
JZ9152#20.094"3/16"1/32"-0.004" to +0.005"Rockwell B8090000 psi-€8.8525
KWASB#2N8#20.094"3/16"0.022" to 0.028"-0.014" to +0.005"Rockwell B8090000 psiSilver€25.4525
LWASB#2R8#20.094"1/4"0.028" to 0.036"-0.014" to +0.005"Rockwell B8090000 psiSilver€18.0625
MWASB#2W8#20.094"11/32"0.028" to 0.036"-0.014" to +0.005"Rockwell B8090000 psiSilver€15.471
NU51410.011.0002#41/8"5/16"1/32"----€4.641
OWASB#4W8#41/8"7/16"0.036" to 0.045"-0.014" to +0.005"Rockwell B8090000 psiSilver€14.381
PZ9154#41/8"1/4"1/16"-0.004" to +0.005"Rockwell B8090000 psi-€10.1710
QZ9085SS#41/8"5/16"5/64"-0.004" to +0.005"Rockwell B8090000 psi-€18.2010
RWASB#4N8#41/8"1/4"0.028" to 0.036"-0.014" to +0.005"Rockwell B8090000 psiSilver€20.4825
SWASB#4R8#41/8"3/8"0.036" to 0.045"-0.014" to +0.005"Rockwell B8090000 psiSilver€16.7425
TWASB#6N8#65/32"5/16"0.028" to 0.036"-0.014" to +0.005"Rockwell B8090000 psiSilver€19.1525
UU51410.013.0003#65/32"3/8"1/32"----€11.061
VZ9086SS#65/32"3/8"5/64"-0.004" to +0.005"Rockwell B8090000 psi-€16.5910
WWASB#6R8#65/32"7/16"0.036" to 0.045"-0.014" to +0.005"Rockwell B8090000 psiSilver€18.6825
XWASB#6W8#65/32"9/16"0.036" to 0.045"-0.014" to +0.005"Rockwell B8090000 psiSilver€16.771
YU51410.013.0001#65/32"3/8"2/41"--Not Applicable-€2.261
FOREVERBOLT -

NL-19(SM) Grade 316 Stainless Steel Oversized Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPrice
AFB3FEWASH122P51/2"17/32"2"1/16"-0.01" to +0.01"Rockwell B80Silver€26.28
BFB3FEWASH14114P251/4"9/32"1 1/4"0.05"-0.01" to +0.01"Rockwell B80Silver€51.89
CFB3FEWASH141P251/4"9/32"1"0.05"-0.01" to +0.01"Rockwell B80Silver€43.59
DFB3FEWASH38114P53/8"13/32"1 1/4"0.05"-0.01" to +0.01"Rockwell B80Silver€16.84
EFB3FEWASH38112P53/8"13/32"1 1/2"1/16"-0.01" to +0.01"Rockwell B80Silver€24.45
FFB3FEWASH516112P105/16"11/32"1 1/2"1/16"-0.01" to +0.01"Rockwell B80Silver€43.40
GFB3FEWASH516114P105/16"11/32"1 1/4"0.05"-0.01" to +0.01"Rockwell B80Silver€31.92
FOREVERBOLT -

NL-19(SM) Grade 18-8 Stainless Steel Oversized Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPrice
AFBFEWASH12112P101/2"17/32"1 1/2"1/16"-0.01" to +0.01"Rockwell B70Silver€20.78
BFBFEWASH122P101/2"17/32"2"1/16"-0.01" to +0.01"Rockwell B70Silver€29.61
CFBFEWASH14112P251/4"9/32"1 1/2"1/16"-0.01" to +0.01"Rockwell B70Silver€39.37
DFBFEWASH14114P251/4"9/32"1 1/4"0.05"-0.01" to +0.01"Rockwell B70Silver€32.27
EFBFEWASH141P251/4"9/32"1"0.05"-0.01" to +0.01"Rockwell B70Silver€25.69
FFBFEWASH142P101/4"9/32"2"1/16"-0.01" to +0.01"Rockwell B70Silver€30.97
GFBFEWASH38158P103/8"13/32"1 5/8"1/16"-0.01" to +0.01"Rockwell B70Silver€20.70
HFBFEWASH38112P103/8"13/32"1 1/2"1/16"-0.01" to +0.01"Rockwell B70Silver€20.60
IFBFEWASH38114P103/8"13/32"1 1/4"0.05"-0.01" to +0.01"Rockwell B70Silver€15.35
JFBFEWASH382P103/8"13/32"2"1/16"-0.01" to +0.01"Rockwell B70Silver€27.29
KFBFEWASH516112P105/16"11/32"1 1/2"1/16"-0.01" to +0.01"Rockwell B70Silver€22.53
LFBFEWASH516114P105/16"11/32"1 1/4"0.05"-0.01" to +0.01"Rockwell B70Silver€17.74
MFBMFWASH6P50M66.4 mm18 mm1.6 mm-0.2 mm to +0.2 mm-Silver€62.94
NFBMFWASH8P25M88.4 mm24 mm2 mm-0.2 mm to +0.2 mm-Silver€43.94
OFBMFWASH10P10M1010.5 mm30 mm2.5 mm-0.2 mm to +0.2 mm-Silver€26.56
PFBMFWASH12P10M1213 mm37 mm3 mm-0.3 mm to +0.3 mm-Silver€22.53
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Yellow Zinc Plated Steel USS Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorTemp. RangePricePkg. Qty.
AU38131.150.00011 1/2"1 5/8"3 1/2"0.156"--Yellow-58°F to +302°F€14.345
B513161G1 1/2"1 5/8"3 1/2"0.156"-0.027" to +0.033"Rockwell C38--€15.045
B513141G1 1/4"1 3/8"3"0.156"-0.029" to +0.027"Rockwell C38--€11.411
AU38131.125.00011 1/4"1 3/8"3"0.156"--Yellow-58°F to +302°F€11.101
BHU-1250USSHZYBAGGR1 1/4"1 3/8"3"0.136" to 0.192"-Rockwell C38-C45Yellow-€17.261
AU38131.112.00011 1/8"1 1/4"2 3/4"0.156"--Yellow-58°F to +302°F€9.205
BHU-1125USSHZYBAGGR1 1/8"1 1/4"2 3/4"0.136" to 0.192"-Rockwell C38-C45Yellow-€15.505
B513131G1 1/8"1 1/4"2 3/4"0.156"-0.029" to +0.027"Rockwell C38--€10.165
AU38131.137.00011 3/8"1 1/2"3 1/4"0.156"--Yellow-58°F to +302°F€14.241
AU38131.100.00011"1.063"2 1/2"0.156"--Yellow-58°F to +302°F€10.145
B513121G1"1.063"2 1/2"0.156"-0.029" to +0.027"Rockwell C38--€16.2210
BHU-1000USSHZYBAGGR1"1.063"2 1/2"0.136" to 0.192"-Rockwell C38-C45Yellow-€31.3010
CHU-1000USSHZYB1"1.063"2 1/2"0.156"-0.028" to +0.028"Rockwell C38-C45Yellow-€595.60300
B513061G1/2"0.563"1 3/8"0.109"-0.023" to +0.023"Rockwell C38--€8.8825
BHU-0500USSHZYBAGGR1/2"0.563"1 3/8"0.086" to 0.132"-Rockwell C38-C45Yellow-€8.7525
AU38131.050.00011/2"0.563"1 3/8"0.109"--Yellow-58°F to +302°F€15.2350
DHU-0500USSHZYB1/2"0.563"1 3/8"0.109"-0.023" to +0.023"Rockwell C38-C45Yellow-€351.871
B513021G1/4"0.313"3/4"0.065"-0.014" to +0.015"Rockwell C38--€12.02100
AU38131.025.00011/4"0.313"47/64"0.065"--Yellow-58°F to +302°F€8.12100
B513101G3/4"0.813"2"0.156"-0.026" to +0.029"Rockwell C38--€22.0920
AU38131.075.00013/4"0.813"2"0.156"--Yellow-58°F to +302°F€17.6720
EHU-0375USSHZYB3/8"7/16"1"0.084"-0.02" to +0.02"Rockwell C38-C45Yellow-€323.111
B513041G3/8"7/16"1"0.083"-0.019" to +0.021"Rockwell C38--€8.0550
BHU-0375USSHZYBAGGR3/8"7/16"1"0.064" to 0.104"-Rockwell C38-C45Yellow-€9.9950
AU38131.037.00013/8"7/16"1"0.083"--Yellow-58°F to +302°F€13.08100
APPROVED VENDOR -

Plain Brass Standard Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessTensile StrengthPricePkg. Qty.
AZ9094BR#100.203"1/2"3/32"-0.004" to +0.005"Rockwell B5058000 psi€25.425
BZ9208BR1"1.031"2"9/32"-0.02" to +0.005"Rockwell B5058000 psi€9.521
CZ9103BR1"1.031"2"3/16"-0.02" to +0.005"Rockwell B5058000 psi€7.101
DZ9099BR1/2"17/32"1 1/8"1/8"-0.004" to +0.005"Rockwell B5058000 psi€26.235
EZ9204BR1/2"17/32"1 1/8"3/16"-0.02" to +0.005"Rockwell B5058000 psi€25.641
FZ9095BR1/4"9/32"5/8"1/8"-0.004" to +0.005"Rockwell B5058000 psi€18.665
GZ9200BR1/4"9/32"5/8"3/16"-0.02" to +0.005"Rockwell B5058000 psi€22.701
HZ9101BR3/4"0.781"1 5/8"5/32"-0.02" to +0.005"Rockwell B5058000 psi€26.435
IZ9206BR3/4"0.781"1 5/8"1/4"-0.02" to +0.005"Rockwell B5058000 psi€4.611
JZ9097BR3/8"13/32"7/8"1/8"-0.004" to +0.005"Rockwell B5058000 psi€14.625
KZ9202BR3/8"13/32"1"3/16"-0.02" to +0.005"Rockwell B5058000 psi€26.895
LZ9100BR5/8"21/32"1 3/8"1/8"-0.004" to +0.005"Rockwell B5058000 psi€21.795
MZ9205BR5/8"21/32"1 3/8"3/16"-0.02" to +0.005"Rockwell B5058000 psi€29.281
NZ9096BR5/16"11/32"3/4"1/8"-0.004" to +0.005"Rockwell B5058000 psi€25.425
OZ9201BR5/16"11/32"3/4"3/16"-0.02" to +0.005"Rockwell B5058000 psi€23.421
PZ9207BR7/8"0.906"1 3/4"1/4"-0.02" to +0.005"Rockwell B5058000 psi€7.351
QZ9102BR7/8"0.906"1 3/4"5/32"-0.02" to +0.005"Rockwell B5058000 psi€26.095
RFW5B00300-100P1M33.2 mm7 mm0.5 mm-0.05 mm to +0.05 mm--€5.03100
RFW5B00400-100P1M44.3 mm9 mm0.8 mm-0.1 mm to +0.1 mm--€10.241
RFW5B00500-100P1M55.3 mm10 mm1 mm-0.1 mm to +0.1 mm--€12.32100
RFW5B00600-100P1M66.4 mm12 mm1.6 mm-0.2 mm to +0.2 mm--€21.52100
RFW5B00800-050P1M88.4 mm16 mm1.6 mm-0.2 mm to +0.2 mm--€18.8450
RFW5B01000-025P1M1010.5 mm20 mm2 mm-0.2 mm to +0.2 mm--€17.901
RFW5B01200-025P1M1213 mm24 mm2.5 mm-0.2 mm to +0.2 mm--€29.4925
RFW5B01600-010P1M1617 mm30 mm3 mm-0.3 mm to +0.3 mm--€24.5610
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Zinc Plated Steel Oversized Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorTemp. RangePricePkg. Qty.
AU38160.013.0002#65/32"9/16"0.047"----€5.651
BZ0449#65/32"9/16"0.047"-0.004" to +0.005"Rockwell B55--€2.871
CZ0448#60.141"5/8"1/32"-0.004" to +0.005"Rockwell B55--€6.0050
DZ0629#63/16"7/8"0.051"-0.004" to +0.005"Rockwell B55Silver-€14.27100
EZ0480#65/32"3/4"0.051"-0.004" to +0.005"Rockwell B55--€3.481
FZ0481#83/16"1"0.051"-0.004" to +0.005"Rockwell B55--€4.131
GZ0631#80.203"1"0.051"-0.004" to +0.005"Rockwell B55Silver-€14.021
HZ0630#80.203"3/4"0.051"-0.004" to +0.005"Rockwell B55Silver-€10.481
IU38160.016.0001#83/16"3/4"0.051"0.034" to 0.58"---€4.671
JZ0451#83/16"3/4"0.047"-0.004" to +0.005"Rockwell B55--€8.4550
KZ0632#80.203"1 1/4"0.051"-0.004" to +0.005"Rockwell B55Silver--100
RFQ
LZ0450#80.172"3/4"0.047"-0.004" to +0.005"Rockwell B55--€11.911
IB38160.016.0001#83/16"3/4"0.051"0.034" to 0.58"----4
RFQ
MZ0452#100.203"1/2"0.047"-0.004" to +0.005"Rockwell B55--€6.711
IB38160.019.0009#107/32"1"1/4"-----500
RFQ
NU38160.019.0008#107/32"1"1/8"----€34.46100
OU38160.019.0009#107/32"1"1/4"----€40.741
P1JLP7#107/32"3/4"0.075"+0.029"Rockwell B40--€36.75100
QZ9678#107/32"1"1/8"-0.004" to +0.005"Rockwell B55--€16.011
RZ9679#107/32"1"1/4"-0.02" to +0.005"Rockwell B55--€18.685
SU38160.019.0002#103/16"11/16"0.047"----€6.99100
TZ0454#100.203"1"0.047"-0.004" to +0.005"Rockwell B55--€5.7850
UZ0453#100.203"11/16"0.047"-0.004" to +0.004"Rockwell B55--€12.351
VZ0482#107/32"1 1/2"0.051"-0.004" to +0.005"Rockwell B55--€5.291
WZ0627#100.203"3/4"0.051"-0.004" to +0.005"Rockwell B55Silver-€12.24100
APPROVED VENDOR -

Plain Phenolic Resin Standard Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceColorWasher TypeMaterialPricePkg. Qty.
AZ8402#41/8"0.312"0.063"-0.004" to +0.005"TanStandard WasherPhenolic Resin€3.915
BZ8406#65/32"1/2"0.063"-0.004" to +0.005"TanStandard WasherPhenolic Resin€6.575
CZ8408#81.172"1/2"0.063"-0.004" to +0.005"TanStandard WasherPhenolic Resin€3.045
DZ8410#100.203"0.632"0.063"-0.004" to +0.005"TanStandard WasherPhenolic Resin€3.565
EZ84121/4"9/32"5/8"0.063"-0.004" to +0.005"TanStandard WasherPhenolic Resin€3.285
FZ84145/16"0.328"0.569"0.063"-0.004" to +0.005"TanStandard WasherPhenolic Resin€3.375
APPROVED VENDOR -

Hot Dipped Galvanized Steel Plain Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPrice
AZ8880-HDG1/2"9/16"3"1/4"-0.031" to +0.031"Rockwell B55Silver€18.37
BZ8893-HDG3/4"0.812"4"1/4"-0.031" to +0.031"Rockwell B55Silver€25.65
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Plain Grade 18-8 Stainless Steel SAE Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessTensile StrengthHardnessColorTemp. RangePricePkg. Qty.
AWAS50401#11 1/16"2 1/2"0.136" to 0.192"90000 psiRockwell B80--€15.051
BWAS40401#11 1/16"2"0.108" to 0.16"90000 psiRockwell B80--€10.681
CWAS404#4#41/8"5/16"0.025" to 0.04"90000 psiRockwell B80--€6.9050
DWAS404#6#65/32"3/8"0.036" to 0.065"90000 psiRockwell B80--€4.291
EWAS404#8#80.187"7/16"0.036" to 0.065"90000 psiRockwell B80--€26.2150
FWAS404#10#107/32"1/2"0.036" to 0.065"90000 psiRockwell B80--€9.4350
GWAS504#10#101/4"9/16"0.036" to 0.065"90000 psiRockwell B80--€10.5850
HWAS404#12#121/4"9/16"0.051" to 0.08"90000 psiRockwell B80--€14.1250
IU51205.150.00011 1/2"1 5/8"3"0.156"Not Applicable---58°F to +302°F€19.091
JU51205.125.00011 1/4"1 3/8"2 1/2"0.156"Not Applicable---58°F to +302°F€12.001
KB51205.125.00011 1/4"1 3/8"2 1/2"0.156"Not Applicable-Silver-58°F to +302°F€301.80130
LU51205.112.00011 1/8"1 1/4"2 1/4"0.134"----€82.091
MU51205.137.00011 3/8"1 1/2"2 3/4"0.156"----€123.781
NU51205.100.00011"1.063"2"0.134"Not Applicable---58°F to +302°F€6.871
OU51205.050.00011/2"17/32"1 1/16"0.095"Not Applicable---58°F to +302°F€5.2925
PWAS404121/2"17/32"1 1/16"0.074" to 0.121"90000 psiRockwell B80--€13.671
QWAS504121/2"9/16"1 3/8"0.097" to 0.121"90000 psiRockwell B80--€68.8725
RWAS504141/4"5/16"3/4"0.051" to 0.08"90000 psiRockwell B80--€33.7250
SU51205.025.00011/4"9/32"5/8"0.065"Not Applicable---58°F to +302°F€4.711
TU51205.075.00013/4"0.813"1 15/32"0.134"Not Applicable---58°F to +302°F€17.061
UWAS404343/4"0.812"1 1/2"0.108" to 0.16"90000 psiRockwell B80--€5.181
VB51205.075.00013/4"0.813"1 15/32"0.134"Not Applicable-Silver-58°F to +302°F€368.55500
WWAS504383/8"7/16"1"0.064" to 0.104"90000 psiRockwell B80--€46.5125
XWAS404383/8"13/32"13/16"0.051" to 0.08"90000 psiRockwell B80--€18.8025
YB51205.037.00013/8"13/32"13/16"0.065"Not Applicable-Silver-58°F to +302°F€339.522
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Black Oxide Grade 2 Steel Standard Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessColorTemp. RangeWasher TypeMaterialPricePkg. Qty.
AL38100.060.0001M66.4 mm12 mm1.6 mmSilver-58°F to +302°FStandard WasherSteel-9
RFQ
BM38100.060.0001M66.4 mm12 mm1.6 mm--58°F to +302°FStandard WasherSteel€2.291
CM38100.080.0001M88.4 mm16 mm1.6 mm--58°F to +302°FStandard WasherSteel€3.321
DM38100.100.0001M1010.5 mm20 mm2 mm--58°F to +302°FStandard WasherSteel€7.831
EM38100.120.0001M1213 mm24 mm2.5 mm--58°F to +302°FStandard WasherSteel€4.951
FL38100.140.0001M1415 mm28 mm2.5 mmSilver-58°F to +302°FStandard WasherSteel-1
RFQ
GM38100.140.0001M1415 mm28 mm2.5 mm--58°F to +302°FStandard WasherSteel€6.781
HL38100.160.0001M1617 mm30 mm3 mmSilver-58°F to +302°FStandard WasherSteel-875
RFQ
IM38100.160.0001M1617 mm30 mm3 mm--58°F to +302°FStandard WasherSteel€4.181
JM38100.180.0001M1819 mm34 mm3 mm--58°F to +302°FStandard WasherSteel€6.101
KM38100.200.0001M2021 mm37 mm3 mm--58°F to +302°FStandard WasherSteel€3.091
LM38100.220.0001M2223 mm39 mm3 mm--58°F to +302°FStandard WasherSteel€3.541
MM38100.240.0001M2425 mm44 mm4 mm--58°F to +302°FStandard WasherSteel€4.881
NM38100.270.0001M2728 mm50 mm4 mm--58°F to +302°FStandard WasherSteel€3.791
OM38100.300.0001M3031 mm56 mm4 mm--Standard WasherSteel€4.481
PM38100.330.0001M3334 mm60 mm5 mm--58°F to +302°FStandard WasherSteel€2.681
QM38100.360.0001M3637 mm66 mm5 mm--Standard WasherSteel€3.521
RM38100.390.0001M3940 mm72 mm6 mm--58°F to +302°FStandard WasherSteel€4.041
SM38100.420.0001M4243 mm78 mm7 mm--Standard WasherSteel€5.921
TM38100.450.0001M4546 mm85 mm7 mm--58°F to +302°FStandard WasherSteel€6.741
UM38100.480.0001M4850 mm92 mm8 mm--58°F to +302°FStandard WasherSteel€9.281
VM38100.560.0001M5658 mm105 mm9 mm--58°F to +302°FStandard WasherSteel€6.591
WM38100.580.0001M5860 mm110 mm9 mm--58°F to +302°FStandard WasherSteel€7.231
XM38100.640.0001M6466 mm115 mm9 mm--58°F to +302°FStandard WasherSteel€7.911
YM38100.720.0001M7274.3 mm123.7 mm9.75 mm--58°F to +302°FStandard WasherSteel€10.241
-

Black Oxide Steel USS Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPricePkg. Qty.
A6DYY71 1/2"1 5/8"3 1/2"0.156"-0.03" to +0.03"Rockwell C38-€41.1125
B4RXW81 1/2"1 5/8"3 1/2"3/16"-0.03" to +0.03"Rockwell C38-€220.761
CU38100.125.00011 1/4"1 1/4"3"0.156"---€8.711
DU38100.112.00011 1/8"1 1/8"2 3/4"0.156"---€7.451
A6DYY81 3/4"1 7/8"4"0.156"-0.03" to +0.03"Rockwell C38-€23.3810
EU38402.175.00011 3/4"1 7/8"4"0.156"---€13.851
F4RXW61 3/8"1 1/2"3 1/4"3/16"-0.03" to +0.03"Rockwell C38-€217.46150
A6DYY61 3/8"1 1/2"3 1/4"0.156"-0.03" to +0.03"Rockwell C38-€39.1625
GU38100.025.00011/4"0.313"47/64"0.065"0.051" to 0.08"-Silver€4.751
H4VNY82 1/2"2 5/8"5"15/64"-0.035" to +0.035"Rockwell C38-€218.151
IU38402.250.00012 1/2"2 5/8"5"0.238"---€48.441
A6DYZ12 1/2"2 5/8"5"1/4"-0.035" to +0.035"Rockwell C38-€45.1910
JU38402.225.00012 1/4"2 1/4"4 3/4"0.156"---€33.901
A6DYY92"2 1/8"4 1/2"0.156"-0.03" to +0.03"Rockwell C38-€48.9510
KU38402.200.00012"2 1/8"4 1/2"0.156"---€19.581
L4RXY22"2 1/8"4 1/2"3/16"-0.03" to +0.03"Rockwell C38-€242.611
MU38402.300.00013"3"5 1/2"0.284"---€62.185
NFWUIS075-450P3/4"0.813"2"0.156"-0.01" to +0.01"Rockwell B49-€174.431
OFWUIS075USA-455P3/4"0.813"2"0.156"0.122" to 0.177"--€454.711
PU38100.037.00013/8"7/16"1"0.083"0.064" to 0.104"-Silver€9.761
A6DYY13/16"1/4"9/16"3/64"-0.014" to +0.014"Rockwell C38-€2.21100
QU38402.018.00013/16"1/4"9/16"2/41"-0.013" to +0.016"--€2.831
RFWUIS062-650P5/8"0.172"1 3/4"9/64"-0.01" to +0.01"Rockwell B49-€217.281
SU38100.031.00015/16"3/8"7/8"0.083"0.064" to 0.104"-Silver€9.281
TU38100.087.00017/8"7/8"2 1/4"0.156"---€10.541
-

Plain Grade 316 Stainless Steel Standard Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceTensile StrengthHardnessColorPricePkg. Qty.
AU55410.011.0001#41/8"5/16"1/32"----€18.5750
BU55410.016.0001#85/32"3/8"1/32"-Not Applicable--€2.681
CU55410.019.0002#107/32"1/2"2/41"-Not Applicable--€4.131
DU55410.019.0001#103/16"7/16"1/32"-Not Applicable--€3.251
EU55420.150.00011 1/2"1 5/8"3 1/2"0.156"----€55.745
FU55420.137.00011 3/8"1 1/2"3 1/4"0.156"----€44.635
GB55410.100.00021"1.063"2 1/2"0.156"-Not Applicable-Silver€481.61125
HU55410.100.00021"1.063"2 1/2"0.156"-Not Applicable--€20.131
IU55410.100.00011"1.063"2"0.109"-Not Applicable--€10.391
JU55410.050.00011/2"17/32"1 1/16"0.063"-Not Applicable--€9.911
KU55410.050.00031/2"0.563"1 3/8"0.094"-Not Applicable--€23.191
LU55410.050.00021/2"0.563"1 1/4"0.063"-Not Applicable--€17.071
MB55410.025.00021/4"0.313"3/4"0.047"-Not Applicable-Silver-3
RFQ
NU55410.025.00011/4"9/32"5/8"0.047"-Not Applicable--€4.901
OU55410.025.00021/4"0.313"3/4"0.047"-Not Applicable--€6.831
PU55410.075.00013/4"0.781"1 1/2"0.109"-Not Applicable--€22.831
QU55410.075.00023/4"0.781"2"1/8"-Not Applicable--€64.481
RU55410.037.00023/8"13/32"13/16"0.047"-Not Applicable--€8.651
SU55410.037.00013/8"3/8"7/8"0.047"-Not Applicable--€10.771
TB55410.037.00023/8"13/32"13/16"0.047"-Not Applicable-Silver-3850
RFQ
UU55410.037.00033/8"7/16"1"0.063"-Not Applicable--€18.231
VU55410.062.00015/8"21/32"1 5/16"0.063"-Not Applicable--€18.0325
WB55410.062.00025/8"11/16"1 1/2"5/64"-Not Applicable-Silver-775
RFQ
XU55410.062.00025/8"11/16"1 1/2"5/64"-Not Applicable--€29.261
YU55410.062.00035/8"11/16"1 3/4"0.109"----€56.6625
APPROVED VENDOR -

Zinc Plated Steel USS Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPricePkg. Qty.
AU38400.112.00011 1/8"1 1/4"2 3/4"0.156"---€9.481
B6DYW71 3/4"1 7/8"4"0.156"-0.03" to +0.03"Rockwell C38-€18.9310
CU38400.137.00021 3/8"1 1/2"3 1/4"0.156"---€10.241
D4RVU21/2"0.563"1 3/8"7/64"-0.025" to +0.025"Rockwell C38-€257.911
EU38400.025.00041/4"0.313"3/4"1/16"0.051" to 0.08"-Silver€6.011
B6DYW82"2 1/8"4 1/2"0.156"-0.03" to +0.03"Rockwell C38-€24.051
F4RVX82"2 1/8"4 1/2"3/16"-0.03" to +0.03"Rockwell C38-€242.8880
GU38400.075.00043/4"0.813"2"0.156"---€16.541
HU38130.037.00013/8"7/16"1"5/64"0.064" to 0.104"-Silver€10.991
IU38400.018.00013/16"1/4"9/16"3/64"0.036" to 0.065"-Silver€3.631
JU38130.031.00015/16"3/8"7/8"5/64"0.064" to 0.104"-Silver€8.161
K4RVX25/16"3/8"7/8"5/64"-0.02" to +0.02"Rockwell C38-€246.634
LU38400.056.00029/16"5/8"1 1/2"0.109"---€6.661
APPROVED VENDOR -

Zinc Plated Grade 2 Steel Oversized Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessTemp. RangePricePkg. Qty.
AU38210.012.0062#61/8"5/8"1/32"-Rockwell 140HV-€3.721
BU38210.050.01501/2"17/32"1 1/2"0.051"+0.047" to +0.08"--€6.731
CU38210.050.03001/2"17/32"3"0.063"-Rockwell 140HV-€34.561
BU38210.050.02001/2"17/32"2"0.051"+0.047" to +0.08"--€15.491
BU38210.025.01501/4"9/32"1 1/2"0.051"+0.047" to +0.08"Rockwell 140HV-€20.961
BU38210.025.01251/4"9/32"1 1/4"0.051"+0.047" to +0.08"Rockwell 140HV-€14.201
BU38210.025.01001/4"9/32"1"0.051"+0.047" to +0.08"Rockwell 140HV-€10.691
DU38210.025.00871/4"9/32"7/8"0.047"-Rockwell 140HV-€6.521
EU38210.025.02001/4"9/32"2"0.047"---€84.56100
FU38210.025.02501/4"9/32"2 1/2"0.063"-Rockwell 140HV-€61.501
GU38210.025.03001/4"9/32"3"0.063"-Rockwell 140HV-€109.491
HU38210.012.00751/8"5/32"3/4"0.051"+0.047" to +0.08"Rockwell 140HV-€6.211
IU38210.037.01623/8"13/32"1 5/8"0.047"-Rockwell 140HV-€20.111
BU38210.037.01253/8"13/32"1 1/4"0.051"+0.047" to +0.08"--€11.641
JU38210.037.03003/8"13/32"3"0.063"-Rockwell 140HV-€86.481
BU38210.037.01503/8"13/32"1 1/2"0.051"+0.047" to +0.08"Rockwell 140HV-€21.131
KU38210.018.01503/16"7/32"1 1/2"0.047"-Rockwell 140HV-€16.101
LU38210.018.01003/16"7/32"1"0.051"+0.047" to +0.08"Rockwell 140HV-€10.881
MU38210.018.00753/16"7/32"3/4"0.047"---58°F to +302°F€5.93100
NU38210.031.03005/16"11/32"3"0.063"-Rockwell 140HV-€77.581
OU38210.031.02505/16"11/32"2 1/2"0.063"-Rockwell 140HV-€53.951
PU38210.031.01625/16"11/32"1 5/8"0.051"+0.047" to +0.08"Rockwell 140HV-€18.661
BU38210.031.01255/16"11/32"1 1/4"0.051"+0.047" to +0.08"Rockwell 140HV-€15.711
BU38210.031.01505/16"11/32"1 1/2"0.051"+0.047" to +0.08"Rockwell 140HV-€20.981
QU38210.031.02005/16"11/32"2"0.047"---€29.701
-

Zinc Plated Steel SAE Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorTemp. RangePricePkg. Qty.
AU38400.011.0001#20.094"1/4"0.016"----€3.231
B6DYX2#40.094"1/4"1/64"-0.005" to +0.005"Rockwell B40--€32.951
CU38400.011.0003#41/8"5/16"1/32"----€1.991
DU38400.013.0001#65/32"3/8"3/64"0.036" to 0.065"Rockwell B40--€2.391
B6DYX3#65/32"3/8"3/64"-0.015" to +0.015"Rockwell B40--€10.06790
EU38400.016.0001#83/16"7/16"3/64"0.036" to 0.065"-Silver-€3.351
FU38400.016.0005#83/16"3/8"0.047"----€24.091
B6DYX5#83/16"7/16"3/64"-0.015" to +0.015"Rockwell C38--€8.02585
GU38400.019.0004#107/32"1/2"3/64"0.036" to 0.065"-Silver-€3.411
HU38205.150.00011 1/2"1 5/8"3"0.156"----€8.361
IU38400.150.00011 1/2"1 5/8"3"0.156"----€7.505
JU38205.125.00011 1/4"1 3/8"2 1/2"0.156"----€5.091
KB38205.125.00011 1/4"1 3/8"2 1/2"0.156"--Silver-58°F to +302°F€143.31130
LU38400.125.00011 1/4"1 3/8"2 1/2"0.156"----€6.251
MU38205.112.00011 1/8"1 1/4"2 1/4"0.134"----€4.581
NU38400.137.00011 3/8"1 1/2"2 3/4"0.156"----€7.501
OU38205.137.00011 3/8"1 1/2"2 3/4"0.156"----€6.381
PU38205.100.00011"1.063"2"0.134"----€3.511
QB38205.100.00011"1.063"2"0.134"--Silver-58°F to +302°F€176.87265
RB38205.050.00011/2"17/32"1 1/16"3/32"--Silver-€151.131
SU38205.050.00011/2"17/32"1 1/16"3/32"0.074" to 0.121"-Silver-€7.341
TB38205.025.00011/4"9/32"5/8"1/16"--Silver-€181.174
UU38205.025.00011/4"9/32"5/8"1/16"0.051" to 0.08"-Silver-€4.671
VB38205.075.00013/4"0.813"1 15/32"0.134"--Silver-58°F to +302°F-500
RFQ
WU38205.075.00013/4"0.813"1 15/32"0.134"----58°F to +302°F€7.241
COOPER B-LINE -

Yellow Zinc Plated Steel Flat Washers

StyleModelInside Dia.Outside Dia.Fits Bolt SizesThicknessWasher TypeMaterialFinish
A5/16 FW YZN BOXED----Flat WasherSteelYellow Zinc Plated
RFQ
B3/8X1 1/4 FFW YZN3/8"1 1/4"--Flat WasherSteelYellow Zinc Plated
RFQ
A1/2 FW YZN BOXED9/16"1 3/8"1/2"7/64"Flat WasherSteelYellow Zinc Plated
RFQ
StyleModelOutside Dia.Fits Bolt SizesInside Dia.Washer TypeMaterialFinish
A5/8FWZN1 15/32"5/8"-Round WasherStainless SteelZinc Plated
RFQ
A3/8FWZN1"-3/8"Round WasherStainless SteelZinc Plated
RFQ
FOREVERBOLT -

NL-19(SM) Grade 18-8 Stainless Steel Military Specification Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPrice
AFBFLWMS81P100#80.172"19/64"0.029" to 0.035"0.029" to 0.035"Rockwell B70Silver€75.29
BFBFLWMS82P100#83/16"3/8"0.036" to 0.065"0.036" to 0.065"Rockwell B70Silver€83.77
CFBFLWMS12P51/2"17/32"1 1/16"0.074" to 0.121"0.074" to 0.121"Rockwell B70Silver€9.31
DFBFLWMS14P501/4"9/32"5/8"0.051" to 0.08"0.051" to 0.08"Rockwell B70Silver€40.17
EFBFLWMS38P253/8"13/32"13/16"0.051" to 0.08"0.051" to 0.08"Rockwell B70Silver€25.97
FFBFLWMS58P55/8"21/32"1 5/16"0.074" to 0.121"0.074" to 0.121"Rockwell B70Silver€10.40
1234...15

Flat Washers

Flat washers are used with threaded fasteners for distributing the load uniformly and reducing frictional losses during screw tightening. These units are used for providing spacing and electrical insulation in control boxes. Raptor Supplies offers a wide array of flat washers from Accurate Mfd Products, Apollo, Armor Coat, C. Sherman Johnson, Dynaform, Earnest, Fabory, Foreverbolt, Grainger, Master Products, Metric Blue, TE-CO and Micro Plastics.

Frequently Asked Questions

What is the difference between flat washers and lock washers?

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

How to install a flat washer?

  • Place the flat washer between the threaded fastener (like a nut) and the screw / bolt head.
  • Make sure that the washer presses against the fastener & other adjacent surfaces to form a tight connection. Press the fastener down to lock the grooves of a serrated washer with the grooves of the nut.
  • Use a wrench or ratchet to tighten the nut / threaded fastener.
  • Ensure that the teeth of a serrated washer are covered completely by the nut / fastener head, or that a split washer is slightly out of alignment. This indicates 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 flat washer?

  • Simply remove the nut / threaded fastener that is holding the washer in place using a vice-grip or pipe wrench.
  • Use a flat screwdriver to pry a 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 flat 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 flat washer does not budge, use penetrating oil and repeat the previous step.
  • Some flat 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 flat washer or other damaged washers. Do not use old washers in high-stress joint applications.