McMaster-Carr logo
    Filter by
    System of Measurement
    Screw Size
    Industrial Info Compare
    Washer Type
    Thickness
    Width
    For Use In
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Industrial Info Compare
    Fastener Strength Grade/Class
    Industrial Info Snippet
    Specifications Met
    Military Specification
    Fastener Strength Rating
    Certification
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    14 Products

    Leveling Washers for I-Beams

    Image of ProductInUse. Mounted on an I-Beam. Front orientation. Leveling Washers. Leveling Washers for I-Beams.

    Mounted

    on an

    I-Beam

    Image of Product. Front orientation. Contains Annotated. Leveling Washers. Leveling Washers for I-Beams.
    Commonly called beveled washers, these are tapered to fit inside an I-beam's flange to provide a parallel bearing surface.
    Black-Oxide Iron—Black-oxide iron washers have a matte-black finish that prevents corrosion in dry environments.
    Galvanized Iron—Galvanized iron washers are corrosion resistant in wet environments.
    Thk.
    For Screw
    Size
    ID
    Wd.
    (A)
    (B)
    Hardness
    Pkg.
    Qty.
    Pkg.
    Iron
    5/16"
    		0.375"1.000"0.312"0.141"Rockwell B8310000000000000000
     
    Black-Oxide Iron
    5/16"
    		0.375"1.000"0.313"0.141"Rockwell B831000000000000000
     
    Galvanized Iron
    5/16"
    		0.375"1.000"0.313"0.141"Rockwell B831000000000000000
     

    Split Lock Washers

    Image of Product. Front orientation. Lock Washers. Split-Lock Washer.
    Stop nuts and screws from loosening due to mild vibration. As you tighten, the uneven ends bite into the nut or screw so it won't back out. While they're not as vibration resistant as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
    Black-Oxide Steel—Typically chosen for their appearance, these washers have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    Highly Corrosion-Resistant Zinc-Flake-Coated Steel—With 40 times the corrosion resistance of zinc-plated steel, these withstand rust as well as 316 stainless steel. They have been tested to extreme standards, including 1,000 hours of salt spray. They are similar to Magni-coated washers.
    For Screw
    Size
    ID
    OD
    Thk.
    For Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    9/16"
    		0.574"0.965"0.141"—ASME B18.21.12500000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    9/16"
    		0.574"0.965"0.141"—ASME B18.21.12500000000000000
     
    Zinc-Plated Steel
    9/16"
    		0.574"0.965"0.141"—ASME B18.21.110000000000000000
     
    Zinc-Yellow-Chromate-Plated Steel
    9/16"
    		0.574"0.965"0.141"SAE Grade 8
    		ASME B18.21.15000000000000000
     
    Black-Oxide Steel
    9/16"
    		0.574"0.965"0.141"—ASME B18.21.110000000000000
     
    Steel
    9/16"
    		0.574"0.965"0.141"—ASME B18.21.1500000000000000
     
    Highly Corrosion-Resistant Zinc-Flake-Coated Steel
    9/16"
    		0.574"0.965"0.141"—ASME B18.21.15000000000000
     

    Mil. Spec. Split Lock Washers

    Image of Product. Front orientation. Lock Washers. Mil. Spec., Split-Lock Washer.
    These washers are manufactured and tested to strict U.S. military standards for material and construction. As you tighten, the uneven ends bite into the nut or screw so it won't loosen due to mild vibration. While they don't hold as tightly as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.
    Passivated 18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. They won't rust in wet and outdoor environments, but can't hold up to harsh chemicals as well as 316 stainless steel.
    Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
    Corrosion-Resistant Cadmium-Plated Steel—The finish creates a better barrier against rust than zinc plating for use in wet and outdoor environments.
    For Screw
    Size
    ID
    OD
    Thk.
    Mil. Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Passivated 18-8 Stainless Steel
    9/16"
    		0.564"0.965"0.141"MS35338-144ASME B18.21.11000000000000000
     
    Black-Oxide 18-8 Stainless Steel
    9/16"
    		0.564"0.965"0.141"MS35338-144ASME B18.21.120000000000000
     
    Zinc-Yellow-Chromate-Plated Steel
    9/16"
    		0.564"0.965"0.141"MS35338-49ASME B18.21.1100000000000000
     
    Corrosion-Resistant Cadmium-Plated Steel
    9/16"
    		0.564"0.965"0.141"MS35338-49ASME B18.21.150000000000000
     
    back to top