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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

APPROVED VENDOR -

Black Oxide Steel Countersunk Washers

APPROVED VENDOR Z9931A
StyleModelFor Screw SizeOverall HeightOutside Dia.Countersink AngleHeight ToleranceHardnessColorPricePkg. Qty.
AZ9931#81/8"1"82°-0.01" to +0.01"Rockwell C40Black€30.585
AZ9930#81/8"3/4"82°-0.01" to +0.01"Rockwell C40Black€24.585
AZ9934#100.14"1 1/4"82°-0.01" to +0.01"Rockwell C40Black€10.641
AZ9932#100.14"13/16"82°-0.01" to +0.01"Rockwell C40Black€35.705
AZ9933#100.14"1 1/8"82°-0.01" to +0.01"Rockwell C40Black€10.741
AZ99361/4"0.281"1 3/8"82°-0.01" to +0.01"Rockwell C40Black€12.561
AZ99371/4"0.281"1 1/2"82°-0.01" to +0.01"Rockwell C40Black€12.301
AZ99351/4"0.281"1 1/4"82°-0.01" to +0.01"Rockwell C40Black€12.791
AZ99391/4"0.281"2"82°-0.01" to +0.01"Rockwell C40Black€35.281
AZ99381/4"0.281"1 3/4"82°-0.01" to +0.01"Rockwell C40Black€17.021
AZ9920M43 mm16 mm90°-0.3 mm to +0.3 mmRockwell C40Black€22.605
AZ9921M43 mm20 mm90°-0.3 mm to +0.3 mmRockwell C40Black€23.095
AZ9923M53.5 mm25 mm90°-0.3 mm to +0.3 mmRockwell C40Black€44.525
AZ9924M53.5 mm28 mm90°-0.3 mm to +0.3 mmRockwell C40Black€8.101
AZ9922M53.5 mm22 mm90°-0.3 mm to +0.3 mmRockwell C40Black€31.495
AZ9928M66 mm45 mm90°-0.3 mm to +0.3 mmRockwell C40Black€18.471
AZ9925M64 mm32 mm90°-0.3 mm to +0.3 mmRockwell C40Black€12.721
AZ9926M64 mm36 mm90°-0.3 mm to +0.3 mmRockwell C40Black€13.271
AZ9929M66 mm52 mm90°-0.3 mm to +0.3 mmRockwell C40Black€27.291
AZ9927M65 mm40 mm90°-0.3 mm to +0.3 mmRockwell C40Black€15.071
MICRO PLASTICS -

Plain Grade 6/6 Nylon Countersunk Washers

MICRO PLASTICS 11SFW0006BA
MICRO PLASTICS 11SFW0008BB
MICRO PLASTICS 11SFW0008C
MICRO PLASTICS 11SFW0010D
MICRO PLASTICS 11SFW0012E
StyleModelFor Screw SizeOverall HeightOutside Dia.ColorCountersink AngleHeight ToleranceTemp. RangePricePkg. Qty.
A11SFW0006B#60.1"7/16"Black82°-0.005" to +0.005"-40°F€8.5320
B11SFW0008B#80.115"33/64"Black82°-0.005" to +0.005"-40°F€22.7620
C11SFW0008#80.115"33/64"Natural82°-0.005" to +0.005"-40°F€6.6520
D11SFW0010#100.152"37/64"Natural82°-0.005" to +0.005"-40°F€9.0220
E11SFW0012#124/25"39/64"Natural82°-0.005" to +0.005"-40°F€20.4620
GRAINGER -

Plain Grade 316 Stainless Steel Countersunk Washers

GRAINGER ZPYR#10625-316A
GRAINGER ZPYR14750-316B
StyleModelFor Screw SizeOutside Dia.Overall HeightCountersink AngleHeight ToleranceHardnessColorTensile StrengthPrice
AZPYR#10625-316#105/8"1/8"82°-0.01" to +0.01"Rockwell B85-B95Silver75000 psi€10.23
BZPYR14750-3161/4"3/4"1/8"82°-0.01" to +0.01"Rockwell B85-B95Silver75000 psi€10.82
APPROVED VENDOR -

Plain Grade 18-8 Stainless Steel Countersunk Washers

APPROVED VENDOR U51350.013.0001A
APPROVED VENDOR U51350.016.0001B
APPROVED VENDOR Z9930SSC
APPROVED VENDOR Z9931SSD
APPROVED VENDOR Z9934SSE
APPROVED VENDOR U51350.019.0001F
APPROVED VENDOR Z9932SSG
APPROVED VENDOR Z9933SSH
APPROVED VENDOR U51350.021.0001I
APPROVED VENDOR U51350.025.0001J
APPROVED VENDOR Z9937SSK
APPROVED VENDOR Z9938SSL
APPROVED VENDOR Z9936SSM
APPROVED VENDOR Z9939SSN
APPROVED VENDOR Z9935SSO
APPROVED VENDOR FINWX00300-010P1P
StyleModelFor Screw SizeOverall HeightOutside Dia.Countersink AngleHeight ToleranceHardnessColorTensile StrengthPricePkg. Qty.
AU51350.013.0001#60.078"29/64"82°+0.043"Rockwell B70Silver-€9.791
BU51350.016.0001#83/32"33/64"82°+0.038"Rockwell B70Silver-€9.941
CZ9930SS#81/8"3/4"82°-0.01" to +0.01"Rockwell B85-B95-90000 psi€10.961
DZ9931SS#81/8"1"82°-0.01" to +0.01"Rockwell B85-B95-90000 psi€14.751
EZ9934SS#100.14"1 1/4"82°-0.01" to +0.01"Rockwell B85-B95-90000 psi€23.341
FU51350.019.0001#100.109"19/32"82°+0.05"Rockwell B70Silver-€13.161
GZ9932SS#100.14"13/16"82°-0.01" to +0.01"Rockwell B85-B95-90000 psi€16.391
HZ9933SS#100.14"1 1/8"82°-0.01" to +0.01"Rockwell B85-B95-90000 psi€27.021
IU51350.021.0001#120.265"11/16"82°-0.139"Rockwell B70Silver-€17.081
JU51350.025.00011/4"0.156"25/32"82°-0.005" to +0.014"Rockwell B70Silver-€21.191
KZ9937SS1/4"0.281"1 1/2"82°-0.01" to +0.01"Rockwell B85-B95-90000 psi€37.341
LZ9938SS1/4"0.281"1 3/4"82°-0.01" to +0.01"Rockwell B85-B95-90000 psi€54.271
MZ9936SS1/4"0.281"1 3/8"82°-0.01" to +0.01"Rockwell B85-B95-90000 psi€38.251
NZ9939SS1/4"0.281"2"82°-0.01" to +0.01"Rockwell B85-B95-90000 psi€85.851
OZ9935SS1/4"0.281"1 1/4"82°-0.01" to +0.01"Rockwell B85-B95-90000 psi€26.961
PFINWX00300-010P1M31.8 mm10 mm90°----€12.1010
PFINWX00400-010P1M42.3 mm14 mm90°----€15.7310
PFINWX00500-005P1M52.8 mm16 mm90°----€23.245
PFINWX00600-005P1M63.3 mm18 mm90°----€11.215
APPROVED VENDOR -

Countersunk Washer, 8 For Screw Size, Steel, 17/32 In O.D., 0.109 In Overall Ht., 100 Pk

Countersunk Washer, 8 For Screw Size, Steel, 17/32 In O.D., 0.109 In Overall Ht., 100 Pk
ModelItemPrice (ex. VAT)Pkg. Qty.
FINWIS0-85-100PAB9HNJ€7.58
100

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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