Countersunk Washers

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Countersunk washers are used with oval and flat head screws to provide a bearing surface and sealing functionality. Raptor Supplies offers a wide range of countersunk washers from brands...Read more

APPROVED VENDOR -

Washer #8

StyleModelFinishInside Dia.MaterialOutside Dia.ThicknessPrice (ex. VAT)
A253036-PGNickel0.210"Low Carbon Steel17/32"7/64"€7.50
BU51350.016.0001Plain0.203"18-8 Stainless Steel33/64"3/32"€7.21
APPROVED VENDOR -

Countersunk Washer

StyleModelFinishFits Bolt SizesInside Dia.MaterialOutside Dia.Rockwell HardnessThicknessThickness TolerancePrice (ex. VAT)
AZ9934Black Oxide#1013/64"Steel1.25"B849/64"+/-0.010"€10.53
AZ9928Black OxideM66.4mmSteel45mmB846mm+/-0.3mm€18.28
AZ9939Black Oxide1/4"9/32"Steel2"B849/32"+/-0.010"€34.92
AZ9938Black Oxide1/4"9/32"Steel1.75"B849/32"+/-0.010"€16.85
AZ9937Black Oxide1/4"9/32"Steel1.5"B849/32"+/-0.010"€12.17
AZ9935Black Oxide1/4"9/32"Steel1.25"B849/32"+/-0.010"€10.98
AZ9932Black Oxide#1013/64"Steel13/16"B849/64"+/-0.010"€35.33
AZ9927Black OxideM66.4mmSteel40mmB845mm+/-0.3mm€14.92
AZ9926Black OxideM66.4mmSteel36mmB844mm+/-0.3mm€13.13
AZ9923Black OxideM55.3mmSteel25 mmB843.5mm+/-0.3mm€44.07
AZ9936Black Oxide1/4"9/32"Steel1.375"B849/32"+/-0.010"€12.44
AZ9930Black Oxide#83/16"Steel3/4"B841/8"+/-0.010"€24.34
AZ9931Black Oxide#83/16"Steel1"B841/8"+/-0.010"€30.27
AZ9924Black OxideM55.3mmSteel28mmB843.5mm+/-0.3mm€8.01
AZ9933Black Oxide#1013/64"Steel1.125"B849/64"+/-0.010"€9.21
AZ9922Black OxideM55.3mmSteel22mmB843.5mm+/-0.3mm€31.17
AZ9921Black OxideM44.3mmSteel20 mmB843mm+/-0.3mm€22.86
AZ9929Black OxideM66.4mmSteel52mmB846mm+/-0.3mm€27.02
AZ9925Black OxideM66.4mmSteel32 mmB844mm+/-0.3mm€12.59
AZ9920Black OxideM44.3mmSteel16 mmB843mm+/-0.3mm€22.38
BZ9930SSPlain#83/16"18-8 Stainless Steel3/4"B85 to C951/8"+/-0.010"€10.85
CZ9931SSPlain#83/16"18-8 Stainless Steel1"B85 to C951/8"+/-0.010"€14.60
DZ9933SSPlain#1013/64"18-8 Stainless Steel1.125"B85 to C959/64"+/-0.010"€26.74
EZ9938SSPlain1/4"9/32"18-8 Stainless Steel1.75"B85 to C959/32"+/-0.010"€53.73
FZ9937SSPlain1/4"9/32"18-8 Stainless Steel1.5"B85 to C959/32"+/-0.010"€36.97
APPROVED VENDOR -

Countersunk Washer, Carbon Steel

StyleModelFinishFits Bolt SizesInside Dia.MaterialOutside Dia.ThicknessPrice (ex. VAT)
A253061-PGNickel3/8"0.460"Low Carbon Steel1"1/4"€67.14
B6FY96PlainM55.3mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)16 mm2.8mm€23.01
B6FY94PlainM44.3mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)14mm2.3mm€15.57
B6FY98PlainM66.4mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)18mm3.3mm€11.10
B6FY92PlainM33.2mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)10mm1.8mm€11.98
APPROVED VENDOR -

Washer #10

StyleModelFinishInside Dia.MaterialPrice (ex. VAT)
A253041-PGNickel0.265"Low Carbon Steel€10.01
BU51350.019.0001Plain0.250"18-8 Stainless Steel€9.55
APPROVED VENDOR -

Washer #12

StyleModelFinishInside Dia.MaterialOutside Dia.ThicknessPrice (ex. VAT)
A253046-PGNickel0.289"Low Carbon Steel21/32"1/8"€11.12
BU51350.021.0001Plain0.297"18-8 Stainless Steel11/16"9/34"€12.39
APPROVED VENDOR -

Washer #6

StyleModelFinishInside Dia.MaterialOutside Dia.Price (ex. VAT)
A253031-PGNickel0.200"Low Carbon Steel15/32"€15.75
RFQ
A908016-PGNickel0.200"Brass15/32"€7.33
BU51350.013.0001Plain0.172"18-8 Stainless Steel29/64"€7.11
APPROVED VENDOR -

Washer 1/4 Inch

StyleModelFinishInside Dia.MaterialPrice (ex. VAT)
A253049-PGNickel0.335"Low Carbon Steel€40.18
RFQ
BU51350.025.0001Plain0.328"18-8 Stainless Steel€15.38
MICRO PLASTICS -

Countersunk Washers, Nylon

StyleModelColorFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (ex. VAT)
A11SFW0012BBlack#120.225"0.609"0.16"€6.57
B11SFW0025BBlack1/4"0.260"0.683"0.18"-
RFQ
C11SFW0008BBlack#80.171"0.51"0.115"€19.52
D11SFW0006BBlack#60.143"0.437"0.1"€7.32
E11SFW0010BBlack#100.196"0.575"0.152"€12.07
F11SFW0025Off White1/4"0.260"0.683"0.18"€7.89
G11SFW0010Off White#100.196"0.575"0.152"€7.74
H11SFW0012Off White#120.225"0.609"0.16"€20.25
I11SFW0008Off White#80.171"0.51"0.115"€6.59
GRAINGER -

Countersunk Washers

StyleModelInside Dia.Outside Dia.Price (ex. VAT)
AZPYR#10625-3160.2031 in5/8"€10.13
BZPYR14750-3160.2813 in3/4"€10.71
APPROVED VENDOR -

Washer #4, 100PK

ModelItemPrice (ex. VAT)
925167-PGAB9HNE€7.98

Countersunk Washers

Countersunk washers are used with oval and flat head screws to provide a bearing surface and sealing functionality. Raptor Supplies offers a wide range of countersunk washers from brands like Grainger and Micro-Plastics. These washers work similar to flat washers, but feature a bearing surface for flat head screws.

Frequently Asked Questions

How do countersunk washers provide better protection against vibrations than flat washers?

  • When installed, these countersunk washers push against the object for resisting vibrations.
  • They essentially act as springs. Driving a threaded fastener through the centre will force the washer's sides to collapse, thus pushing against the object.

What are finishing countersunk washers?

  • Finishing countersunk washers are also known as dress washers.
  • These washers are machined to be sturdier and provide a better appearance than standard countersunk washers.
  • Oval and flat head screws sit flush within these countersunk washers.

What are countersunk external-tooth lock washers?

These washers feature teeth that firmly grip heads of 82-degree flat head countersunk screws, preventing joints from loosening due to vibration.

What is the significance of countersunk tight-grip external-tooth lock washers?

The teeth on these washers bite deeper into the screw head & joint than normal external-tooth lock washers. They provide a solid hold, preventing 90-degree countersunk screws from loosening due to vibrations.

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