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 like Read More

APPROVED VENDOR -

Countersunk Washer

StyleModelFinishFits Bolt SizesInside Dia.MaterialOutside Dia.Rockwell HardnessThicknessThickness TolerancePrice (inc. GST)
AZ9924Black OxideM55.3mmSteel28mmB843.5mm+/-0.3mmA$ 16.19
AZ9923Black OxideM55.3mmSteel25 mmB843.5mm+/-0.3mmA$ 89.03
AZ9920Black OxideM44.3mmSteel16 mmB843mm+/-0.3mmA$ 45.21
AZ9938Black Oxide1/4"9/32"Steel1.75"B849/32"+/-0.010"A$ 34.03
AZ9936Black Oxide1/4"9/32"Steel1.375"B849/32"+/-0.010"A$ 25.12
AZ9934Black Oxide#1013/64"Steel1.25"B849/64"+/-0.010"A$ 21.27
AZ9932Black Oxide#1013/64"Steel13/16"B849/64"+/-0.010"A$ 71.39
AZ9930Black Oxide#83/16"Steel3/4"B841/8"+/-0.010"A$ 49.17
AZ9929Black OxideM66.4mmSteel52mmB846mm+/-0.3mmA$ 54.58
AZ9928Black OxideM66.4mmSteel45mmB846mm+/-0.3mmA$ 36.94
AZ9926Black OxideM66.4mmSteel36mmB844mm+/-0.3mmA$ 26.53
AZ9925Black OxideM66.4mmSteel32 mmB844mm+/-0.3mmA$ 25.43
AZ9927Black OxideM66.4mmSteel40mmB845mm+/-0.3mmA$ 30.14
AZ9921Black OxideM44.3mmSteel20 mmB843mm+/-0.3mmA$ 46.18
AZ9939Black Oxide1/4"9/32"Steel2"B849/32"+/-0.010"A$ 70.55
AZ9931Black Oxide#83/16"Steel1"B841/8"+/-0.010"A$ 61.16
AZ9933Black Oxide#1013/64"Steel1.125"B849/64"+/-0.010"A$ 18.61
AZ9937Black Oxide1/4"9/32"Steel1.5"B849/32"+/-0.010"A$ 24.60
AZ9935Black Oxide1/4"9/32"Steel1.25"B849/32"+/-0.010"A$ 22.18
AZ9922Black OxideM55.3mmSteel22mmB843.5mm+/-0.3mmA$ 62.99
BZ9931SSPlain#83/16"18-8 Stainless Steel1"B85 to C951/8"+/-0.010"A$ 29.50
CZ9933SSPlain#1013/64"18-8 Stainless Steel1.125"B85 to C959/64"+/-0.010"A$ 54.03
DZ9939SSPlain1/4"9/32"18-8 Stainless Steel2"B85 to C959/32"+/-0.010"A$ 171.71
EZ9935SSPlain1/4"9/32"18-8 Stainless Steel1.25"B85 to C959/32"+/-0.010"A$ 53.92
FZ9930SSPlain#83/16"18-8 Stainless Steel3/4"B85 to C951/8"+/-0.010"A$ 21.91
StyleModelFinishFits Bolt SizesInside Dia.MaterialOutside Dia.ThicknessPrice (inc. GST)
A253061-PGNickel3/8"0.460"Low Carbon Steel1"1/4"A$ 81.81
A6FY92PlainM33.2mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)10mm1.8mmA$ 24.20
A6FY96PlainM55.3mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)16 mm2.8mmA$ 46.49
A6FY94PlainM44.3mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)14mm2.3mmA$ 31.46
A6FY98PlainM66.4mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)18mm3.3mmA$ 22.42
APPROVED VENDOR -

Washer #10

StyleModelFinishInside Dia.MaterialPrice (inc. GST)
A253041-PGNickel0.265"Low Carbon SteelA$ 41.18
B1NU84Plain0.250"18-8 Stainless SteelA$ 19.29
APPROVED VENDOR -

Washer #12

StyleModelFinishInside Dia.MaterialOutside Dia.ThicknessPrice (inc. GST)
A253046-PGNickel0.289"Low Carbon Steel21/32"1/8"A$ 44.38
B1NU85Plain0.297"18-8 Stainless Steel11/16"9/34"A$ 25.04
APPROVED VENDOR -

Washer #6

StyleModelFinishInside Dia.MaterialOutside Dia.Price (inc. GST)
A908016-PGNickel0.200"Brass15/32"A$ 22.77
A253031-PGNickel0.200"Low Carbon Steel15/32"A$ 35.51
RFQ
B1NU82Plain0.172"18-8 Stainless Steel29/64"A$ 14.34
APPROVED VENDOR -

Washer #8

StyleModelFinishInside Dia.MaterialOutside Dia.ThicknessPrice (inc. GST)
A253036-PGNickel0.210"Low Carbon Steel17/32"7/64"A$ 13.64
B1NU83Plain0.203"18-8 Stainless Steel33/64"3/32"A$ 14.56
APPROVED VENDOR -

Washer 1/4 Inch

StyleModelFinishInside Dia.MaterialPrice (inc. GST)
A253049-PGNickel0.335"Low Carbon Steel-
RFQ
B1NU86Plain0.328"18-8 Stainless SteelA$ 31.06
MICRO PLASTICS -

Countersunk Washers, Nylon

StyleModelColorFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
A11SFW0010BBlack#100.196"0.575"0.152"A$ 21.67
B11SFW0012BBlack#120.225"0.609"0.16"A$ 11.79
C11SFW0006BBlack#60.143"0.437"0.1"A$ 14.45
D11SFW0008BBlack#80.171"0.51"0.115"A$ 39.45
E11SFW0025BBlack1/4"0.260"0.683"0.18"-
RFQ
F11SFW0010Off White#100.196"0.575"0.152"A$ 15.31
G11SFW0012Off White#120.225"0.609"0.16"A$ 40.92
H11SFW0008Off White#80.171"0.51"0.115"A$ 15.25
I11SFW0025Off White1/4"0.260"0.683"0.18"A$ 14.17
GRAINGER -

Countersunk Washers

StyleModelInside Dia.Outside Dia.Price (inc. GST)
AZPYR#10625-3160.2031 in5/8"A$ 20.46
BZPYR14750-3160.2813 in3/4"A$ 21.65
APPROVED VENDOR -

Washer #4, 100PK

ModelItemPrice (inc. GST)
925167-PGAB9HNEA$ 14.34

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.

Features

  • These washers resist screw heads from splitting wood.
  • These recessed washers let screws sit flush with the work surface, allowing users to easily varnish, sand and provide a smooth & finished look while installing or repairing wood trim.
  • They dip inward radially and are elevated on the sides, but the centre is relatively flat & non-elevated.
  • Countersunk washers can be used by inserting a threaded fastener through the centre.
  • They are compatible with flat-head fasteners and can distribute the load of a bolt or threaded nut.
  • These countersunk washers provide better protection from vibrations than flat washers.

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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