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

APPROVED VENDOR -

Plain Grade 18-8 Stainless Steel USS Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessTensile StrengthWasher TypeMaterialGradePrice (inc. VAT)Pkg. Qty.
AU51420.150.00011 1/2"1 5/8"3 1/2"0.156"Not ApplicableUSS WasherStainless SteelGrade 18-8£22.455
BU51420.112.00011 1/8"1 1/4"2 3/4"0.156"Not ApplicableUSS WasherStainless SteelGrade 18-8£10.205
CU51420.100.00011"1.063"2 1/2"0.156"Not ApplicableUSS WasherStainless SteelGrade 18-8£12.135
DU51420.050.00011/2"0.563"1 3/8"0.109"Not ApplicableUSS WasherStainless SteelGrade 18-8£10.8525
EU51420.025.00011/4"0.313"47/64"0.065"Not ApplicableUSS WasherStainless SteelGrade 18-8£3.7150
FU51420.075.00013/4"0.813"2"0.156"Not ApplicableUSS WasherStainless SteelGrade 18-8£29.8620
GU51420.037.00013/8"7/16"1"0.083"Not ApplicableUSS WasherStainless SteelGrade 18-8£8.2850
HU51420.062.00015/8"11/16"1 3/4"0.134"Not ApplicableUSS WasherStainless SteelGrade 18-8£21.1525
IU51420.031.00015/16"3/8"7/8"0.083"-USS WasherStainless SteelGrade 18-8£4.5750
JU51420.043.00017/16"0.05"2 3/4"0.083"-USS WasherStainless SteelGrade 18-8£10.3225
KU51420.056.00019/16"5/8"1 15/32"0.109"Not ApplicableUSS WasherStainless SteelGrade 18-8£13.4625
APPROVED VENDOR -

Yellow Zinc Plated Grade 2 Steel Standard Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessTemp. RangePrice (inc. VAT)Pkg. Qty.
AM38080.060.0001M66.4 mm12 mm1.6 mm0.055" to 0.071"Brinell 200-£2.18100
BM38080.080.0001M88.4 mm16 mm1.6 mm0.055" to 0.071"Brinell 200-£3.32100
CM38080.100.0001M1010.5 mm20 mm2 mm0.071" to 0.087"Brinell 200-£5.49100
DM38080.120.0001M1213 mm24 mm2.5 mm---£4.1750
EM38080.140.0001M1415 mm28 mm2.5 mm0.091" to 0.106"Brinell 200-£5.5150
FM38080.160.0001M1617 mm30 mm3 mm---£3.4725
GM38080.220.0001M2223 mm39 mm3 mm---58°F to +302°F£2.1510
HM38080.240.0001M2425 mm44 mm4 mm---£3.9910
StyleModelMPN
AWASHER SPL KIT BLEWASHER SPL KIT BLE
RFQ
AWASHER SPL KIT SSWASHER SPL KIT SS
RFQ
StyleModelFits Bolt SizesThicknessInside Dia.Square WidthWasher TypeMaterialFinish
AAB241-1/2-HDG1/2"1/4"9/16"1 1/2"Located WasherSteelHot Dip Galvanized
RFQ
AAB241-3/8-HDG3/8"3/16"-1 1/2"Located WasherSteelHot Dip Galvanized
RFQ
SUPER-STRUT -

Square Steel Located Flat Washers

StyleModelFits Bolt SizesInside Dia.ThicknessSquare WidthColorFinishWasher TypeMaterial
AAB241-1/2-WH1/2"9/16"1/4"1 1/2"WhiteEpoxy Powder CoatLocated WasherSteel
RFQ
BAB241L-1/4EG1/4"----Silver GalvanizedLocated WasherSteel
RFQ
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessFinishWasher TypeMaterial
A5/16 FW SB BOXED----PlainFlat WasherSilicone Bronze
RFQ
A3/8 FW SB BOXED3/8"7/16"1"5/64"Yellow Zinc PlatedFlat WasherSilicone Bronze
RFQ
StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessHardnessWasher TypeMaterialFinishPrice (inc. VAT)Pkg. Qty.
AUST202003M66.87 mm13 mm1.75 mmRockwell C38-C45Standard WasherAlloy SteelPlain£12.8725
AUST202005M89.12 mm18.8 mm2.3 mmRockwell C38-C45Standard WasherAlloy SteelPlain£27.5650
AUST202006M1011.12 mm20 mm2.3 mmRockwell C38-C45Standard WasherAlloy SteelPlain£16.2425
AUST202007M1213.57 mm25.4 mm2.8 mmRockwell C38-C45Standard WasherAlloy SteelPlain£7.0510
AUST202009M1617.52 mm32 mm3.5 mmRockwell C38-C45Standard WasherAlloy SteelPlain£3.185
AUST202010M2022.32 mm39 mm4 mmRockwell C38-C45Standard WasherAlloy SteelPlain£3.555
AUST202011M2426.12 mm44 mm4.6 mmRockwell C38-C45Standard WasherAlloy SteelPlain£3.695
StyleModelFits Bolt SizesInside Dia.Square WidthThicknessWasher TypeMaterialFinish
AC781-1B1"-4"-Square WasherSteelBlack Oxide
RFQ
AC781-1/2B1/2"9/16"3"3/16"Square WasherSteelBlack Oxide
RFQ
AC781-3/4B3/4"13/16"--Square WasherSteelBlack Oxide
RFQ
AC781-3/8B3/8"7/16"3"3/16"Square WasherSteelBlack Oxide
RFQ
StyleModelFits Bolt SizesInside Dia.ThicknessWasher TypeMaterialGradeFinish
AB450-1/4ZN1/4"5/16"11 ga.U WasherSteelGrade 50Zinc Plated
RFQ
AB450-3/8ZN3/8"7/16"11 ga.U WasherSteelGrade 50Zinc Plated
RFQ
AB450-5/8ZN5/8"11/16"11 ga.U WasherSteelGrade 50Zinc Plated
RFQ
StyleModelInside Dia.Fits Bolt SizesThicknessWasher TypeMaterialFinish
AB450-3/8HDG7/16"3/8"-U WasherSteelHot Dip Galvanized
RFQ
AB450-1/2HDG9/16"-1/4"U WasherSteelHot Dip Galvanized
RFQ
SUPER-STRUT -

Gold Galvanized Steel Located Flat Washers

StyleModelFits Bolt SizesThicknessSquare WidthInside Dia.Washer TypeMaterialFinish
AAB241L-1/21/2"1/2"1 9/16"-Located WasherSteelGold Galvanized
RFQ
AAB241L-1/41/2"-1 9/16"-Located WasherSteelGold Galvanized
RFQ
BAB241-3/43/4"1/4"1 1/2"-Located WasherSteelGold Galvanized
RFQ
AAB241L-3/83/8"3/8"1 9/16"-Located WasherSteelGold Galvanized
RFQ
CAB241-5/85/8"1/8"1 1/2"9/16"Located WasherSteelGold Galvanized
RFQ
AAB241L-5/85/8"---Located WasherSteelGold Galvanized
RFQ
DAB241L-5/165/16"---Located WasherSteelGold Galvanized
RFQ
CAB241-5/165/16"1/8"1 1/2"-Located WasherSteelGold Galvanized
RFQ
APPROVED VENDOR -

Plain Grade 2 Stainless Steel Thick Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessTensile StrengthPrice (inc. VAT)
AZ8962SS1"1 1/16"2"1/4"-0.03" to +0.03"Rockwell B8090000 psi£11.13
BZ8954SS1/2"9/16"2"1/4"-0.03" to +0.03"Rockwell B8090000 psi£9.58
CZ8950SS1/4"5/16"2"1/4"-0.03" to +0.03"Rockwell B8090000 psi£9.34
DZ8958SS3/4"0.812"2"1/4"-0.03" to +0.03"Rockwell B8090000 psi£9.75
EZ8952SS3/8"7/16"2"1/4"-0.03" to +0.03"Rockwell B8090000 psi£9.75
FZ8956SS5/8"11/16"2"1/4"-0.03" to +0.03"Rockwell B8090000 psi£10.61
APPROVED VENDOR -

Plain Grade 18-8 Stainless Steel Military Specification Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessHardnessTensile StrengthWasher TypeMaterialPrice (inc. VAT)Pkg. Qty.
ANAS620-C0#00.063"0.099"0.014" to 0.018"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£10.63100
BMS15795-801#10.078"0.156"0.016" to 0.025"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£7.64100
CNAS620-C2#20.089"0.156"0.014" to 0.018"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£6.00100
DMS15795-802#20.094"1/4"0.016" to 0.025"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£6.54100
EAN960-C2L#20.099"1/4"0.006" to 0.026"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£9.29100
FNAS1149-CN232R#20.099"1/4"0.028" to 0.036"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£9.87100
GNAS620-C3#30.102"0.156"0.029" to 0.035"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£7.75100
HNAS620-C3L#30.102"0.156"0.014" to 0.018"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£6.82100
INAS1149-CN332R#30.105"1/4"0.028" to 0.036"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£10.36100
JAN960-C3L#31/4"1/4"0.006" to 0.026"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£9.40100
KAN960-C3#30.105"1/4"0.022" to 0.042"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£8.34100
LNAS620-C4L#40.115"0.156"0.014" to 0.018"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£4.44100
MAN960-C4L#41/8"0.312"0.006" to 0.026"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£9.68100
NNAS620-C4#40.115"0.156"0.029" to 0.035"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£8.34100
OAN960-C4#41/8"0.312"0.002" to 0.042"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£10.18100
PMS15795-803#41/8"1/4"0.017" to 0.028"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£6.88100
QMS15795-804#41/8"0.312"0.032" to 0.04"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£10.55100
RNAS1149-CN432R#41/8"0.312"0.028" to 0.036"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£13.58100
SNAS620-C5L#50.128"0.238"0.014" to 0.018"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£7.02100
TNAS620-C5#50.128"0.238"0.029" to 0.035"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£9.24100
UNAS1149-CN542R#50.14"7/16"0.037" to 0.047"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£17.95100
VAN960-C6L#60.149"3/8"0.006" to 0.026"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£10.93100
WMS15795-806#65/32"3/8"0.036" to 0.065"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£11.47100
XNAS620-C6L#60.143"0.267"0.014" to 0.018"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£8.34100
YMS15795-805#65/32"0.312"0.027" to 0.048"Rockwell B8090000 psiMil Spec Flat WasherStainless Steel£8.56100
APPROVED VENDOR -

Hot Dipped Galvanized Steel Oversized Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessColorTemp. RangeWasher TypeMaterialPrice (inc. VAT)Pkg. Qty.
AB38157.150.00011 1/2"1 5/8"3 1/2"0.156"Silver-58°F to +302°FOversized WasherSteel£174.4455
BU38157.125.00011 1/4"1 3/8"3"0.156"--58°F to +302°FOversized WasherSteel£6.065
CU38157.112.00011 1/8"1 1/4"2 3/4"0.156"--58°F to +302°FOversized WasherSteel£8.535
DB38157.100.00011"1"2 1/2"0.156"Silver-58°F to +302°FOversized WasherSteel£151.23110
EB38157.050.00011/2"0.563"1 3/8"0.109"Silver-58°F to +302°FOversized WasherSteel£151.66550
FU38157.025.00011/4"0.313"69/94"0.065"--58°F to +302°FOversized WasherSteel£5.94100
GU38157.075.00013/4"0.813"2"0.156"--58°F to +302°FOversized WasherSteel£12.1220
HB38157.075.00013/4"0.813"2"0.156"Silver-58°F to +302°FOversized WasherSteel£432.00500
IB38157.037.00013/8"7/16"1"0.083"Silver-58°F to +302°FOversized WasherSteel£175.861
JU38157.043.00017/16"1/2"1 1/4"0.083"--58°F to +302°FOversized WasherSteel£11.2050
APPROVED VENDOR -

Zinc Plated Grade 2 Steel Standard Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorTemp. RangePrice (inc. VAT)Pkg. Qty.
AM38130.026.0001M2.62.8 mm7 mm0.5 mm----58°F to +302°F£1.02100
BM38130.040.0001M44.3 mm9 mm0.8 mm0.028" to 0.035"Vickers 140--£1.34100
BM38130.050.0001M55.3 mm10 mm1 mm0.035" to 0.043"Vickers 140--£1.58100
BM38130.060.0001M66.4 mm12 mm1.6 mm0.055" to 0.071"Vickers 140--£2.75100
BM38130.070.0001M77.4 mm14 mm1.6 mm0.055" to 0.071"Vickers 140--£2.72100
BM38130.080.0001M88.4 mm16 mm1.6 mm0.055" to 0.071"Vickers 140--£3.60100
BM38130.100.0001M1010.5 mm20 mm2 mm0.071" to 0.087"Vickers 140--£5.96100
CM38130.110.0001M1112 mm24 mm2.5 mm----58°F to +302°F£3.4850
DM38130.120.0001M1213 mm24 mm2.5 mm----£5.7850
BM38130.140.0001M1415 mm28 mm2.5 mm0.091" to 0.106"Brinell 200--£5.9650
EL38130.160.0001M1617 mm30 mm3 mm--Silver-58°F to +302°F-475
RFQ
FM38130.160.0001M1617 mm30 mm3 mm----£3.1725
GM38130.180.0001M1819 mm34 mm3 mm0.106" to 0.13"Brinell 200--£5.5325
HM38130.200.0001M2021 mm37 mm3 mm----£2.2210
IM38130.220.0001M2223 mm39 mm3 mm----58°F to +302°F£2.6410
JM38130.240.0001M2425 mm44 mm4 mm----£3.9010
KL38130.240.0001M2425 mm44 mm4 mm--Silver-58°F to +302°F£57.7990
LM38130.270.0001M2728 mm50 mm4 mm----58°F to +302°F£3.065
MM38130.300.0001M3031 mm56 mm4 mm----£3.375
NM38130.330.0001M3334 mm60 mm5 mm----58°F to +302°F£1.932
OM38130.360.0001M3637 mm66 mm5 mm----£2.062
PM38130.390.0001M3940 mm72 mm6 mm----£3.042
QM38130.420.0001M4243 mm78 mm7 mm----£5.082
RM38130.450.0001M4546 mm85 mm7 mm----58°F to +302°F£5.702
SM38130.480.0001M4850 mm92 mm8 mm----58°F to +302°F£7.642
FOREVERBOLT -

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

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPrice (inc. VAT)Pkg. Qty.
AFB3FLWASH8LOD2P100#83/16"7/16"0.036" to 0.065"0.036" to 0.065"Rockwell B80Silver£57.71100
BFB3FLWASH10LOD2P100#107/32"1/2"0.036" to 0.065"0.036" to 0.065"Rockwell B80Silver£62.36100
CFB3FLWASHN12SODP25#121/4"9/16"0.051" to 0.08"0.051" to 0.08"Rockwell B70Silver£24.2825
DFB3FLWASH1LOD2P101"1.063"2 1/2"3/25"-0.01" to +0.01"Rockwell B80Silver£33.1510
EFB3FLWASH12LOD2P501/2"0.563"1 3/8"0.086" to 0.132"0.086" to 0.132"Rockwell B80Silver£103.9850
FFB3FLWASH12SODS2P251/2"17/32"1 1/16"0.098"-0.023" to +0.023"Rockwell B80Silver£40.8025
GFB3FLWASH12SOD2P51/2"17/32"1 1/16"0.074" to 0.121"0.074" to 0.121"Rockwell B70Silver£11.855
HFB3FLWASH14SOD2P101/4"9/32"5/8"0.051" to 0.08"0.051" to 0.08"Rockwell B70Silver£10.1810
IFB3FLWASH14LOD3P1001/4"0.313"3/4"0.051" to 0.08"0.051" to 0.08"Rockwell B70Silver£68.44100
JFB3FLWASH14SODS2P501/4"9/32"5/8"0.065"-0.015" to +0.015"Rockwell B80Silver£40.6450
KFB3FLWASH14SODP1001/4"9/32"5/8"0.05"-0.01" to +0.01"Rockwell B80Silver£57.11100
LFB3FLWASH14LOD2P251/4"0.313"3/4"0.051" to 0.08"0.051" to 0.08"Rockwell B70Silver£22.5325
MFB3FLWASH34SOD23/4"0.813"1 1/2"0.108" to 0.16"0.108" to 0.16"Rockwell B70Silver£7.081
NFB3FLWASH34LOD2P103/4"0.813"2"0.122" to 0.177"0.122" to 0.177"Rockwell B70Silver£50.8810
OFB3FLWASH34SODS2P103/4"0.813"1 15/32"0.134"-0.026" to +0.026"Rockwell B80Silver£47.3210
PFB3FLWASH38SODS2P503/8"13/32"13/16"0.065"-0.015" to +0.015"Rockwell B80Silver£52.0450
QFB3FLWASH38SOD2P103/8"13/32"13/16"0.051" to 0.08"0.051" to 0.08"Rockwell B70Silver£15.4710
RFB3FLWASH38LOD2P103/8"7/16"1"0.064" to 0.104"0.064" to 0.104"Rockwell B70Silver£14.3510
SFB3FLWASH38LOD3P1003/8"7/16"1"0.064" to 0.104"0.064" to 0.104"Rockwell B70Silver£121.70100
TFB3FLWASH58SODP105/8"17/32"1 1/2"5/64"-0.01" to +0.01"Rockwell B80Silver£16.0810
UFB3FLWASH58LOD2P105/8"11/16"1 3/4"0.108" to 0.16"0.108" to 0.16"Rockwell B70Silver£25.0410
VFB3FLWASH58SODSP105/8"21/32"1 5/16"0.098"-0.023" to +0.023"Rockwell B80Silver£25.3510
WFB3FLWASH516SODS2P505/16"11/32"11/16"0.065"-0.015" to +0.015"Rockwell B80Silver£42.3550
XFB3FLWASH516LOD2P1005/16"3/8"7/8"0.064" to 0.104"0.064" to 0.104"Rockwell B80Silver£86.69100
YFB3FLWASH516SOD2P105/16"11/32"11/16"0.051" to 0.08"0.051" to 0.08"Rockwell B70Silver£14.0210
ARMOR COAT -

Armor Coat Steel USS Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessTensile StrengthPrice (inc. VAT)Pkg. Qty.
AUST2378231/2"0.563"1 3/8"1/8"-0.01" to +0.01"Rockwell C38150000 psi£10.6825
BUST2378191/4"0.313"3/4"5/64"-0.01" to +0.01"Rockwell C38150000 psi£13.00100
CUST2378253/4"0.813"2"5/32"-0.01" to +0.01"Rockwell C38150000 psi£20.7320
DUST2378213/8"7/16"1"3/32"-0.01" to +0.01"Rockwell C38150000 psi£8.6950
EUST2378245/8"21/32"1 3/4"5/32"-0.01" to +0.01"Rockwell C38150000 psi£17.4825
FUST2378205/16"3/8"7/8"3/32"-0.01" to +0.01"Rockwell C38150000 psi£6.9950
GUST2378227/16"1/2"1 1/4"3/32"-0.01" to +0.01"Rockwell C38150000 psi£7.3725
FOREVERBOLT -

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

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPrice (inc. VAT)Pkg. Qty.
AFBFLWMS82P100#83/16"3/8"0.036" to 0.065"0.036" to 0.065"Rockwell B70Silver£64.60100
BFBFLWMS81P100#80.172"19/64"0.029" to 0.035"0.029" to 0.035"Rockwell B70Silver£58.88100
CFBFLWMS12P51/2"17/32"1 1/16"0.074" to 0.121"0.074" to 0.121"Rockwell B70Silver£7.135
DFBFLWMS14P501/4"9/32"5/8"0.051" to 0.08"0.051" to 0.08"Rockwell B70Silver£28.0250
EFBFLWMS38P253/8"13/32"13/16"0.051" to 0.08"0.051" to 0.08"Rockwell B70Silver£19.6725
FFBFLWMS58P55/8"21/32"1 5/16"0.074" to 0.121"0.074" to 0.121"Rockwell B70Silver£7.495
APPROVED VENDOR -

Zinc Plated Grade 2 Steel Oversized Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessTemp. RangePrice (inc. VAT)Pkg. Qty.
AU38210.012.0062#61/8"5/8"1/32"-Rockwell 140HV-£2.30100
BU38210.050.02001/2"17/32"2"0.051"+0.047" to +0.08"--£11.6650
BU38210.050.01501/2"17/32"1 1/2"0.051"+0.047" to +0.08"--£4.7650
CU38210.050.03001/2"17/32"3"0.063"-Rockwell 140HV-£21.3950
BU38210.025.01001/4"9/32"1"0.051"+0.047" to +0.08"Rockwell 140HV-£7.45100
DU38210.025.02501/4"9/32"2 1/2"0.063"-Rockwell 140HV-£44.70100
EU38210.025.02001/4"9/32"2"0.047"---£79.42100
FU38210.025.00871/4"9/32"7/8"0.047"-Rockwell 140HV-£4.40100
BU38210.025.01251/4"9/32"1 1/4"0.051"+0.047" to +0.08"Rockwell 140HV-£9.89100
GU38210.025.03001/4"9/32"3"0.063"-Rockwell 140HV-£73.34100
BU38210.025.01501/4"9/32"1 1/2"0.051"+0.047" to +0.08"Rockwell 140HV-£13.36100
HU38210.012.00751/8"5/32"3/4"0.051"+0.047" to +0.08"Rockwell 140HV-£3.98100
IU38210.037.01623/8"13/32"1 5/8"0.047"-Rockwell 140HV-£12.82100
JU38210.037.03003/8"13/32"3"0.063"-Rockwell 140HV-£69.75100
BU38210.037.01503/8"13/32"1 1/2"0.051"+0.047" to +0.08"Rockwell 140HV-£13.92100
BU38210.037.01253/8"13/32"1 1/4"0.051"+0.047" to +0.08"--£8.75100
KU38210.018.01003/16"7/32"1"0.051"+0.047" to +0.08"Rockwell 140HV-£8.41100
LU38210.018.01503/16"7/32"1 1/2"0.047"-Rockwell 140HV-£10.54100
MU38210.018.00753/16"7/32"3/4"0.047"---58°F to +302°F£4.84100
NU38210.031.02005/16"11/32"2"0.047"---£19.86100
BU38210.031.01505/16"11/32"1 1/2"0.051"+0.047" to +0.08"Rockwell 140HV-£13.96100
BU38210.031.01255/16"11/32"1 1/4"0.051"+0.047" to +0.08"Rockwell 140HV-£10.65100
OU38210.031.02505/16"11/32"2 1/2"0.063"-Rockwell 140HV-£33.39100
PU38210.031.03005/16"11/32"3"0.063"-Rockwell 140HV-£57.32100
QU38210.031.01625/16"11/32"1 5/8"0.051"+0.047" to +0.08"Rockwell 140HV-£12.22100
APPROVED VENDOR -

Black Oxide Steel USS Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceHardnessColorPrice (inc. VAT)Pkg. Qty.
A4RXW81 1/2"1 5/8"3 1/2"3/16"-0.03" to +0.03"Rockwell C38-£164.33130
B6DYY71 1/2"1 5/8"3 1/2"0.156"-0.03" to +0.03"Rockwell C38-£42.7925
CU38100.125.00011 1/4"1 1/4"3"0.156"---£5.935
DU38100.112.00011 1/8"1 1/8"2 3/4"0.156"---£5.025
B6DYY81 3/4"1 7/8"4"0.156"-0.03" to +0.03"Rockwell C38-£20.1710
EU38402.175.00011 3/4"1 7/8"4"0.156"---£9.345
F4RXW61 3/8"1 1/2"3 1/4"3/16"-0.03" to +0.03"Rockwell C38-£179.18150
B6DYY61 3/8"1 1/2"3 1/4"0.156"-0.03" to +0.03"Rockwell C38-£36.6525
GU38100.025.00011/4"0.313"47/64"0.065"0.051" to 0.08"-Silver£3.03100
HU38402.250.00012 1/2"2 5/8"5"0.238"---£30.885
I4VNY82 1/2"2 5/8"5"15/64"-0.035" to +0.035"Rockwell C38-£172.7050
B6DYZ12 1/2"2 5/8"5"1/4"-0.035" to +0.035"Rockwell C38-£54.7910
JU38402.225.00012 1/4"2 1/4"4 3/4"0.156"---£21.615
B6DYY92"2 1/8"4 1/2"0.156"-0.03" to +0.03"Rockwell C38-£32.3610
K4RXY22"2 1/8"4 1/2"3/16"-0.03" to +0.03"Rockwell C38-£187.9080
LU38402.200.00012"2 1/8"4 1/2"0.156"---£12.825
MU38402.300.00013"3"5 1/2"0.284"---£53.055
NFWUIS075-450P3/4"0.813"2"0.156"-0.01" to +0.01"Rockwell B49-£129.19450
OFWUIS075USA-455P3/4"0.813"2"0.156"0.122" to 0.177"--£336.77455
PU38100.037.00013/8"7/16"1"0.083"0.064" to 0.104"-Silver£6.80100
QU38402.018.00013/16"1/4"9/16"2/41"-0.013" to +0.016"--£1.80100
B6DYY13/16"1/4"9/16"3/64"-0.014" to +0.014"Rockwell C38-£2.45100
RFWUIS062-650P5/8"0.172"1 3/4"9/64"-0.01" to +0.01"Rockwell B49-£160.23650
SU38100.031.00015/16"3/8"7/8"0.083"0.064" to 0.104"-Silver£6.75100
TU38100.087.00017/8"7/8"2 1/4"0.156"---£6.7210
APPROVED VENDOR -

Plain Grade 316 Stainless Steel Standard Flat Washers

StyleModelFits Bolt SizesInside Dia.Outside Dia.ThicknessThickness ToleranceTensile StrengthHardnessColorPrice (inc. VAT)Pkg. Qty.
AU55410.011.0001#41/8"5/16"1/32"----£17.1050
BU55410.016.0001#85/32"3/8"1/32"-Not Applicable--£2.1450
CU55410.019.0001#103/16"7/16"1/32"-Not Applicable--£2.2750
DU55410.019.0002#107/32"1/2"2/41"-Not Applicable--£2.7250
EU55420.150.00011 1/2"1 5/8"3 1/2"0.156"----£17.685
FU55420.137.00011 3/8"1 1/2"3 1/4"0.156"----£42.065
GU55410.100.00011"1.063"2"0.109"-Not Applicable--£8.385
HU55410.100.00021"1.063"2 1/2"0.156"-Not Applicable--£12.465
IB55410.100.00021"1.063"2 1/2"0.156"-Not Applicable-Silver£468.63125
JU55410.050.00031/2"0.563"1 3/8"0.094"-Not Applicable--£16.1625
KU55410.050.00021/2"0.563"1 1/4"0.063"-Not Applicable--£11.9025
LU55410.050.00011/2"17/32"1 1/16"0.063"-Not Applicable--£6.9025
MU55410.025.00011/4"9/32"5/8"0.047"-Not Applicable--£3.9650
NU55410.025.00021/4"0.313"3/4"0.047"-Not Applicable--£4.9850
OB55410.025.00021/4"0.313"3/4"0.047"-Not Applicable-Silver-3
RFQ
PU55410.075.00013/4"0.781"1 1/2"0.109"-Not Applicable--£18.4120
QU55410.075.00023/4"0.781"2"1/8"-Not Applicable--£44.9420
RB55410.037.00023/8"13/32"13/16"0.047"-Not Applicable-Silver-3850
RFQ
SU55410.037.00033/8"7/16"1"0.063"-Not Applicable--£12.0050
TU55410.037.00023/8"13/32"13/16"0.047"-Not Applicable--£6.1250
UU55410.037.00013/8"3/8"7/8"0.047"-Not Applicable--£8.5850
VU55410.062.00025/8"11/16"1 1/2"5/64"-Not Applicable--£23.4125
WB55410.062.00025/8"11/16"1 1/2"5/64"-Not Applicable-Silver-775
RFQ
XU55410.062.00015/8"21/32"1 5/16"0.063"-Not Applicable--£14.9425
YU55410.062.00035/8"11/16"1 3/4"0.109"----£46.1525
12...1516

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.

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