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System
of
Measurement
Inch
Metric
Screw
Size
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Thickness
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Finish
Black
Oxide
Galvanized
Zinc
Yellow
-
Chromate
Plated
Material
Stainless
Steel
Steel
Washer
Type
Countersunk
Flat
ID
0
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0
6
2
"
0
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8
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2
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6
"
Hardness
Rockwell
B68
Rockwell
C30
Rockwell
C35
Rockwell
C43
Rockwell
C45
Rockwell
15N
80
Rockwell
15N
85
Not
Rated
Fastener
Strength
Grade/Class
ISO
Class
10.9
SAE
Grade
8
Washer
Designation
General
Purpose
Oversized
Undersized
Performance
Corrosion
Resistant
High
Strength
Specifications
Met
ASME
B18.21.1
DIN
Standard
ISO
Standard
DFARS
Compliance
Specialty
Metals
Compliant
(252.225
-
7009)
Specialty
Metals
COTS
-
Exempt
Not
Specialty
Metals
Compliant
REACH
Compliance
REACH
(EC
1907/2006)
(11/07/2024,
242
SVHC)
Compliant
REACH
(EC
1907/2006)
(06/27/2024,
241
SVHC)
Compliant
REACH
(EC
1907/2006)
(06/14/2023,
235
SVHC)
Compliant
REACH
(EC
1907/2006)
(01/17/2023,
233
SVHC)
Compliant
REACH
(EC
1907/2006)
(06/10/2022,
224
SVHC)
Compliant
REACH
(EC
1907/2006)
(01/17/2022,
223
SVHC)
Compliant
RoHS
Compliance
RoHS
3
(2015/863/EU)
Compliant
RoHS
3
(2015/863/EU)
Compliant
with
Exemptions
Countersink
Angle
82°
90°
100°
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256 Products
Fastening and Joining
Washers
Nearly every size and shape imaginable, from flat washers to clipped to curved
230 products
Finishing Washers
Screw heads sit flush to prevent snagging and to create a neat, finished appearance
26 products
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