Countersunk Washers | Raptor Supplies United Kingdom
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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

MICRO PLASTICS -

Countersunk Washers, Nylon

MICRO PLASTICS 11SFW0025BA
MICRO PLASTICS 11SFW0012BB
MICRO PLASTICS 11SFW0006BC
MICRO PLASTICS 11SFW0008BD
MICRO PLASTICS 11SFW0010BE
MICRO PLASTICS 11SFW0012F
MICRO PLASTICS 11SFW0010G
MICRO PLASTICS 11SFW0025H
MICRO PLASTICS 11SFW0008I
StyleModelColorFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. VAT)
A11SFW0025BBlack1/4"0.260"0.683"0.18"-
RFQ
B11SFW0012BBlack#120.225"0.609"0.16"£6.67
C11SFW0006BBlack#60.143"0.437"0.1"£8.18
D11SFW0008BBlack#80.171"0.51"0.115"£22.32
E11SFW0010BBlack#100.196"0.575"0.152"£12.26
F11SFW0012Off White#120.225"0.609"0.16"£23.16
G11SFW0010Off White#100.196"0.575"0.152"£8.67
H11SFW0025Off White1/4"0.260"0.683"0.18"£8.02
I11SFW0008Off White#80.171"0.51"0.115"£8.63
GRAINGER -

Countersunk Washers

GRAINGER ZPYR#10625-316A
GRAINGER ZPYR14750-316B
StyleModelInside Dia.Outside Dia.Price (inc. VAT)
AZPYR#10625-3160.2031 in5/8"£11.58
BZPYR14750-3160.2813 in3/4"£12.25
APPROVED VENDOR -

Countersunk Washer

APPROVED VENDOR Z9934A
APPROVED VENDOR Z9936SSB
APPROVED VENDOR Z9934SSC
APPROVED VENDOR Z9935SSD
APPROVED VENDOR Z9933SSE
APPROVED VENDOR Z9932SSF
StyleModelFinishFits Bolt SizesInside Dia.MaterialOutside Dia.Rockwell HardnessThicknessThickness TolerancePrice (inc. VAT)
AZ9934Black Oxide#1013/64"Steel1.25"B849/64"+/-0.010"£12.04
AZ9922Black OxideM55.3mmSteel22mmB843.5mm+/-0.3mm£35.64
AZ9933Black Oxide#1013/64"Steel1.125"B849/64"+/-0.010"£10.53
AZ9932Black Oxide#1013/64"Steel13/16"B849/64"+/-0.010"£40.40
AZ9931Black Oxide#83/16"Steel1"B841/8"+/-0.010"£34.61
AZ9929Black OxideM66.4mmSteel52mmB846mm+/-0.3mm£30.89
AZ9928Black OxideM66.4mmSteel45mmB846mm+/-0.3mm£20.90
AZ9927Black OxideM66.4mmSteel40mmB845mm+/-0.3mm£17.06
AZ9926Black OxideM66.4mmSteel36mmB844mm+/-0.3mm£15.01
AZ9923Black OxideM55.3mmSteel25 mmB843.5mm+/-0.3mm£50.39
AZ9924Black OxideM55.3mmSteel28mmB843.5mm+/-0.3mm£9.16
AZ9925Black OxideM66.4mmSteel32 mmB844mm+/-0.3mm£14.39
AZ9921Black OxideM44.3mmSteel20 mmB843mm+/-0.3mm£26.13
AZ9920Black OxideM44.3mmSteel16 mmB843mm+/-0.3mm£25.58
AZ9930Black Oxide#83/16"Steel3/4"B841/8"+/-0.010"£27.83
AZ9935Black Oxide1/4"9/32"Steel1.25"B849/32"+/-0.010"£12.55
AZ9936Black Oxide1/4"9/32"Steel1.375"B849/32"+/-0.010"£14.22
AZ9939Black Oxide1/4"9/32"Steel2"B849/32"+/-0.010"£39.93
AZ9937Black Oxide1/4"9/32"Steel1.5"B849/32"+/-0.010"£13.92
AZ9938Black Oxide1/4"9/32"Steel1.75"B849/32"+/-0.010"£19.26
BZ9936SSPlain1/4"9/32"18-8 Stainless Steel1.375"B85 to C959/32"+/-0.010"£43.29
CZ9934SSPlain#1013/64"18-8 Stainless Steel1.25"B85 to C959/64"+/-0.010"£26.42
DZ9935SSPlain1/4"9/32"18-8 Stainless Steel1.25"B85 to C959/32"+/-0.010"£30.51
EZ9933SSPlain#1013/64"18-8 Stainless Steel1.125"B85 to C959/64"+/-0.010"£30.58
FZ9932SSPlain#1013/64"18-8 Stainless Steel13/16"B85 to C959/64"+/-0.010"£18.55
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APPROVED VENDOR -

Washer #10

APPROVED VENDOR 253041-PGA
APPROVED VENDOR 1NU84B
StyleModelFinishInside Dia.MaterialPrice (inc. VAT)
A253041-PGNickel0.265"Low Carbon Steel£23.30
B1NU84Plain0.250"18-8 Stainless Steel£10.92
APPROVED VENDOR -

Washer #12

APPROVED VENDOR 253046-PGA
APPROVED VENDOR 1NU85B
StyleModelFinishInside Dia.MaterialOutside Dia.ThicknessPrice (inc. VAT)
A253046-PGNickel0.289"Low Carbon Steel21/32"1/8"£25.12
B1NU85Plain0.297"18-8 Stainless Steel11/16"9/34"£14.17
APPROVED VENDOR -

Countersunk Washer, Carbon Steel

APPROVED VENDOR 253061-PGA
StyleModelFinishFits Bolt SizesInside Dia.MaterialOutside Dia.ThicknessPrice (inc. VAT)
A253061-PGNickel3/8"0.460"Low Carbon Steel1"1/4"£46.30
A6FY94PlainM44.3mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)14mm2.3mm£17.80
A6FY98PlainM66.4mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)18mm3.3mm£12.69
A6FY92PlainM33.2mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)10mm1.8mm£13.70
A6FY96PlainM55.3mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)16 mm2.8mm£26.31
APPROVED VENDOR -

Washer #6

APPROVED VENDOR 253031-PGA
APPROVED VENDOR 1NU82B
StyleModelFinishInside Dia.MaterialOutside Dia.Price (inc. VAT)
A253031-PGNickel0.200"Low Carbon Steel15/32"£20.10
RFQ
A908016-PGNickel0.200"Brass15/32"£12.89
B1NU82Plain0.172"18-8 Stainless Steel29/64"£8.12
APPROVED VENDOR -

Washer #8

APPROVED VENDOR 253036-PGA
APPROVED VENDOR 1NU83B
StyleModelFinishInside Dia.MaterialOutside Dia.ThicknessPrice (inc. VAT)
A253036-PGNickel0.210"Low Carbon Steel17/32"7/64"£7.72
B1NU83Plain0.203"18-8 Stainless Steel33/64"3/32"£8.24
APPROVED VENDOR -

Washer 1/4 Inch

APPROVED VENDOR 253049-PGA
APPROVED VENDOR 1NU86B
StyleModelFinishInside Dia.MaterialPrice (inc. VAT)
A253049-PGNickel0.335"Low Carbon Steel-
RFQ
B1NU86Plain0.328"18-8 Stainless Steel£17.58
APPROVED VENDOR -

Washer #4, 100PK

Washer #4, 100PK
ModelItemPrice (inc. VAT)
925167-PGAB9HNE£8.11

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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