Countersunk Washers | Raptor Supplies Singapore

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)
AZ9934Black Oxide#1013/64"Steel1.25"B849/64"+/-0.010" SGD 16.63
AZ9936Black Oxide1/4"9/32"Steel1.375"B849/32"+/-0.010" SGD 19.64
AZ9932Black Oxide#1013/64"Steel13/16"B849/64"+/-0.010" SGD 55.81
AZ9930Black Oxide#83/16"Steel3/4"B841/8"+/-0.010" SGD 38.44
AZ9929Black OxideM66.4mmSteel52mmB846mm+/-0.3mm SGD 42.67
AZ9927Black OxideM66.4mmSteel40mmB845mm+/-0.3mm SGD 23.56
AZ9925Black OxideM66.4mmSteel32 mmB844mm+/-0.3mm SGD 19.88
AZ9923Black OxideM55.3mmSteel25 mmB843.5mm+/-0.3mm SGD 69.60
AZ9921Black OxideM44.3mmSteel20 mmB843mm+/-0.3mm SGD 36.10
AZ9939Black Oxide1/4"9/32"Steel2"B849/32"+/-0.010" SGD 55.15
AZ9937Black Oxide1/4"9/32"Steel1.5"B849/32"+/-0.010" SGD 19.23
AZ9938Black Oxide1/4"9/32"Steel1.75"B849/32"+/-0.010" SGD 26.60
AZ9935Black Oxide1/4"9/32"Steel1.25"B849/32"+/-0.010" SGD 17.34
AZ9924Black OxideM55.3mmSteel28mmB843.5mm+/-0.3mm SGD 12.66
AZ9931Black Oxide#83/16"Steel1"B841/8"+/-0.010" SGD 47.81
AZ9928Black OxideM66.4mmSteel45mmB846mm+/-0.3mm SGD 28.88
AZ9920Black OxideM44.3mmSteel16 mmB843mm+/-0.3mm SGD 35.34
AZ9922Black OxideM55.3mmSteel22mmB843.5mm+/-0.3mm SGD 49.24
AZ9933Black Oxide#1013/64"Steel1.125"B849/64"+/-0.010" SGD 14.55
AZ9926Black OxideM66.4mmSteel36mmB844mm+/-0.3mm SGD 20.74
BZ9933SSPlain#1013/64"18-8 Stainless Steel1.125"B85 to C959/64"+/-0.010" SGD 42.24
CZ9935SSPlain1/4"9/32"18-8 Stainless Steel1.25"B85 to C959/32"+/-0.010" SGD 42.15
DZ9939SSPlain1/4"9/32"18-8 Stainless Steel2"B85 to C959/32"+/-0.010" SGD 134.23
EZ9938SSPlain1/4"9/32"18-8 Stainless Steel1.75"B85 to C959/32"+/-0.010" SGD 84.85
FZ9937SSPlain1/4"9/32"18-8 Stainless Steel1.5"B85 to C959/32"+/-0.010" SGD 58.39
StyleModelFinishFits Bolt SizesInside Dia.MaterialOutside Dia.ThicknessPrice (inc. GST)
A253061-PGNickel3/8"0.460"Low Carbon Steel1"1/4" SGD 106.04
A6FY92PlainM33.2mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)10mm1.8mm SGD 18.92
A6FY94PlainM44.3mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)14mm2.3mm SGD 24.59
A6FY96PlainM55.3mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)16 mm2.8mm SGD 36.34
A6FY98PlainM66.4mmA1 Stainless Steel (Comparable to Free Cutting Stainless Steel)18mm3.3mm SGD 17.52
APPROVED VENDOR -

Washer #10

StyleModelFinishInside Dia.MaterialPrice (inc. GST)
A253041-PGNickel0.265"Low Carbon Steel SGD 15.81
BU51350.019.0001Plain0.250"18-8 Stainless Steel SGD 15.08
APPROVED VENDOR -

Washer #12

StyleModelFinishInside Dia.MaterialOutside Dia.ThicknessPrice (inc. GST)
A253046-PGNickel0.289"Low Carbon Steel21/32"1/8" SGD 17.57
BU51350.021.0001Plain0.297"18-8 Stainless Steel11/16"9/34" SGD 19.57
APPROVED VENDOR -

Washer #6

StyleModelFinishInside Dia.MaterialOutside Dia.Price (inc. GST)
A253031-PGNickel0.200"Low Carbon Steel15/32" SGD 24.88
RFQ
A908016-PGNickel0.200"Brass15/32" SGD 11.57
BU51350.013.0001Plain0.172"18-8 Stainless Steel29/64" SGD 11.23
APPROVED VENDOR -

Washer #8

StyleModelFinishInside Dia.MaterialOutside Dia.ThicknessPrice (inc. GST)
A253036-PGNickel0.210"Low Carbon Steel17/32"7/64" SGD 11.85
BU51350.016.0001Plain0.203"18-8 Stainless Steel33/64"3/32" SGD 11.38
APPROVED VENDOR -

Washer 1/4 Inch

StyleModelFinishInside Dia.MaterialPrice (inc. GST)
A253049-PGNickel0.335"Low Carbon Steel SGD 63.46
RFQ
BU51350.025.0001Plain0.328"18-8 Stainless Steel SGD 24.28
MICRO PLASTICS -

Countersunk Washers, Nylon

StyleModelColorFits Bolt SizesInside Dia.Outside Dia.ThicknessPrice (inc. GST)
A11SFW0010BBlack#100.196"0.575"0.152" SGD 19.06
B11SFW0012BBlack#120.225"0.609"0.16" SGD 10.37
C11SFW0006BBlack#60.143"0.437"0.1" SGD 11.56
D11SFW0008BBlack#80.171"0.51"0.115" SGD 30.84
E11SFW0025BBlack1/4"0.260"0.683"0.18"-
RFQ
F11SFW0010Off White#100.196"0.575"0.152" SGD 12.23
G11SFW0012Off White#120.225"0.609"0.16" SGD 31.99
H11SFW0008Off White#80.171"0.51"0.115" SGD 10.40
I11SFW0025Off White1/4"0.260"0.683"0.18" SGD 12.46
GRAINGER -

Countersunk Washers

StyleModelInside Dia.Outside Dia.Price (inc. GST)
AZPYR#10625-3160.2031 in5/8" SGD 15.99
BZPYR14750-3160.2813 in3/4" SGD 16.92
APPROVED VENDOR -

Washer #4, 100PK

ModelItemPrice (inc. GST)
925167-PGAB9HNE SGD 12.61

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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