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System of Measurement
Inch
Metric
Screw Size
No. 0
No. 1
No. 2
No. 3
No. 4
No. 5
No. 6
No. 8
No. 10
No. 12
No. 14
1/4"
5/16"
3/8"
7/16"
Finish
Hide
Acrylic Coated
Anodized
Black Oxide
Black Zinc Plated
Brass Plated
Cadmium Plated
Chromate Conversion Coated
Chrome Plated
Corrosion-Resistant Coated
Dyed
Epoxy Coated
Galvanized
Hot-Dipped Galvanized
Nickel Chrome Plated
Nickel Plated
Oil Coated
Painted
Passivated
Phosphate Coated
Plastic Coated
Powder Coated
Primed
Silver Plated
Tin Plated
Unglazed
Zinc Flake Coated
Zinc Plated
Zinc Yellow-Chromate Plated
Material
Aluminum
Brass
Ferrite Ceramic
Iron
Neodymium
Plastic
Rubber
Stainless Steel
Steel
Wood
Washer Type
Angled Edge
Clipped
Conical
Countersunk
Curved
Dished
Domed
Flat
Pronged
Slotted
Split
Square
Tab
Tapered
Tooth
Wave
OD
1/8"
0.126"
0.156"
5/32"
0.157"
0.172"
3/16"
3/16"
to
7/32"
0.188"
0.189"
0.195"
0.200"
0.209"
0.213"
0.216"
ID
0.064"
0.067"
0.068"
0.084"
0.086"
0.087"
0.089"
0.090"
0.094"
0.098"
0.102"
0.106"
0.107"
0.109"
0.113"
Fastener Strength Grade/Class
ASTM Grade A490
ISO Class 8.8
ISO Class 10.9
SAE Grade 5
SAE Grade 8
Thickness
0.005" to 0.030"
0.010" to 0.016"
0.012" to 0.018"
0.014"
0.014" to 0.020"
0.015" to 0.019"
0.016" to 0.018"
0.016" to 0.022"
0.017" to 0.021"
0.018"
0.018" to 0.023"
0.018" to 0.024"
0.02"
0.020" to 0.025"
0.020" to 0.027"
Washer Designation
ASME
General Purpose
Oversized
SAE
Undersized
USS
Specifications Met
ASME Standard
ASTM Standard
DIN Standard
EIA-310
EN 61373
ISO Standard
NEBS GR-63-CORE
ASME Designation
Narrow
Regular
Wide
Fastener Strength Rating
Medium
High
Thread Size
4-40
6-32
8-32
10-24
10-32
12-24
1/4"
-20
5/16"
-18
3/8"
-16
3/8"
-24
7/16"
-14
1/2"
-13
1/2"
-20
5/8"
-11
3/4"
-10
7/8"
-9
1"-8
M5
M6
M8
M10
M12
M22
Color
Black
Gray
Green
Red
Silver
White
Performance
Corrosion Resistant
Easy Install
Grounding
Heavy Vibration Resistant
High Strength
Oil Resistant
Precision Adjust
Pressure Rated
Reusable
Tension Indicating
Length
1/8"
5/32"
3/16"
0.191"
7/32"
1/4"
9/32"
5/16"
0.329"
11/32"
3/8"
13/32"
7/16"
0.46"
15/32"
Hardness
Durometer 55A
Durometer 60A
Durometer 85A
Rockwell B38
Rockwell B40
Rockwell B47
Rockwell B52
Rockwell B53
Rockwell B55
Rockwell B56
Rockwell B69
Rockwell B71
Rockwell B75
Rockwell B76
Rockwell B80
RoHS
Compliant
Compliant with Exemptions
Not Compliant
Width
5/16"
11/32"
3/8"
7/16"
1/2"
0.52"
0.53"
0.54"
9/16"
5/8"
0.66"
0.7"
3/4"
0.87"
0.875"
15/16"
1"
1
1/8"
1
5/16"
1
3/8"
1
1/2"
1
9/16"
1
5/8"
1.750"
2"
2
3/8"
2
1/2"
2
3/4"
3"
4"
13"
22 mm
26.0 mm
32.0 mm
40.0 mm
56.0 mm
Overall Height
0.024"
0.035"
0.037"
0.039"
0.043"
0.047"
0.055"
0.059"
0.063"
0.071"
0.073"
0.079"
0.083"
0.087"
0.091"
DFARS Specialty Metals
Compliant
Exempt
Not Compliant
REACH
Compliant
Not Compliant
Export Control Classification Number (ECCN)
2B999
EAR99
Tooth Location
External
Internal
Internal and External
Shape
Disc
Rectangle
Round
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2,555 Products
Washers
General Purpose Washers
Your go-to metal washer for every screw size
57 products
Oversized Washers
Exaggerated diameters and thicknesses to cover large holes or to create gaps
147 products
SAE Washers
Meet SAE sizing standards and typically have smaller diameters than USS washers
57 products
ASME Washers
Meet ASME standards and come in regular, narrow, and wide diameters
117 products
USS Washers
Meet USS sizing standards and typically have larger diameters than SAE washers
32 products
Undersized Washers
Pair with fasteners that have narrow heads, such as cheese and socket head screws
41 products
Dished Washers
Cover oversized holes, such as the ends of pipe and tubes
9 products
Square Washers
Won't rotate as you fasten screws in slots and channels
62 products
Clipped Washers
Clipped on one side to fit in tight spots
41 products
Washers for Square-Neck Bolts
The square hole fits snugly around carriage, plow, and elevator bolts
17 products
Tension-Indicating Structural Washers
Change color when you apply the correct tension to prevent overtightening
15 products
Curved Washers
Sit flush against rails, columns, and other structural tubes
9 products
Washers for Blind Rivets
Sized to fit around blind rivet diameters
6 products
USS Washer Assortments
A collection of sizes that meet USS specifications—typically larger diameters than SAE washers
1 product
General Purpose Washer Assortments
A collection of common washer sizes to fit the broadest range of applications
1 product
Easy-Install Slotted Washers
Slip under nuts and screws without having to disassemble them
1 product
Square Washers for Blind Rivets
Won't rotate as you fasten blind rivets in slots and channels
3 products
SAE Washer Assortments
A range of sizes that meet SAE standards—typically have smaller diameters than USS washers
2 products
Oversized Washer Assortments
A collection of exaggerated sizes to cover large holes or to create gaps
1 product
Other Products
Lock Washers
Resist vibration to prevent fasteners from loosening
338 products
Sealing Washers
Prevent fluids from leaking around fasteners
41 products
Push Nuts
Press onto threads for a light duty hold that’s faster to install than typical nuts
29 products
Leveling Washers
Curved or tapered to compensate for uneven mounting surfaces
11 products
Spacers
Unthreaded to create space between two surfaces or objects, often to align them
843 products
Strut Channel Framing and Fittings
Secure fittings in the U-shaped channel to route conduit and pipe or build other structures
172 products
Finishing Washers
Screw heads sit flush to prevent snagging and to create a neat, finished appearance
7 products
Tie-Down Washers
Angled sides align and hold tie-down straps
5 products
Magnets
Attract or repel metal objects to hang, secure, or position them
35 products
Shims
Align and space components on shafts, or level machinery, cabinets, and doors
60 products
Retaining Rings
Hold components on a shaft
139 products
Unthreaded Inserts
Reinforce, align, and adjust joints as you tighten a fastener
49 products
Fastener Assortments
Keep a variety of common screws, nuts, and washers on hand
5 products
Snap-In Nuts
Push into square holes in thin materials to add bolts for aligning off-center parts
46 products
Webbing Guides
Prevent webbing from twisting and use as anchor points; also known as footman's loops
3 products
Captive Panel Screws
Secure panels and enclosures while still having access to them
70 products
Tag Rings
Loop onto tags to attach them to lanyards, key rings, and other objects
11 products
Strainers
Install next to valves and pumps to catch debris in your line
22 products
Parts Baskets
Contain parts for cleaning and moving them in and out of washers
2 products
Squeegees
Wipe liquids off of windows, floors and other surfaces
17 products
Hex Head Screws
Used with nuts to create a stronger joint than flat and rounded screws
10 products
Pressure Washer Guns
Control the flow of water sprayed from a pressure washer
2 products
Wash Gun Nozzle Extensions
Attach to your wash gun nozzle to clean places out of arm's reach
2 products
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)