Finishing Washers

Finishing washers are countersunk hardware components used to seat compatible fasteners neatly in workpieces and to create clean shaft-end details. Commercial installers, maintenance teams, fabricators and equipment assemblers use them for fastening work where a recessed washer profile can help reduce splitting or stripping of the workpiece material, or where a shaft end needs a finished end-cap appearance.

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Helpful Buying Guide

Finishing Washer Buying Guide

Choose finishing washers by first matching the listed washer size or screw compatibility to the fastening or shaft-end assembly. Then compare the countersunk design, material and finish, outside diameter where stated, and package quantity for the work at hand.

Visual Guide

Popular examples in this category

#12 Countersunk 18-8 Stainless Steel Finishing Washer, Pack of 4,000#12 Countersunk 18-8 Stainless Steel Finishing Washer, Pack of 4,000WBB423406#6 Nickel-Plated Brass Countersunk Finishing Washers, 100-Pack#6 Nickel-Plated Brass Countersunk Finishing Washers, 100-PackWBB2200016Black Steel Countersunk Finishing Washer, 1 in. Outside DiameterBlack Steel Countersunk Finishing Washer, 1 in. Outside DiameterWBB2679939Black Steel Countersunk Finishing Washer for M5 ScrewsBlack Steel Countersunk Finishing Washer for M5 ScrewsWBB2679944
Use Cases

Finish fastening points and shaft ends

Countersunk finishing washers are used to seat compatible fasteners in workpieces and help reduce fastener-related splitting or stripping. Black steel styles are also used with countersunk screws to retain a washer at a shaft face and create an end-cap appearance.

How to Choose

Match the washer to the installation

Select the listed size for the compatible fastener, such as #6, #8, #10, #12, 1/4 in. or 5/16 in. For shaft-end applications, verify the specified screw compatibility and outside diameter.

Applications

Support installation and assembly work

These washers suit commercial fastening, maintenance, fabrication, equipment assembly and shaft-end finishing tasks represented by the available product types.

Additional Info

Compare material, finish and pack count

Available constructions include 18-8 stainless steel, nickel-plated brass, nickel-plated steel and black steel. Pack quantities include 100-piece options and a 4,000-count option.

#6–#12Numbered sizes represented

Listed countersunk fastening-washer sizes include #6, #8, #10 and #12.

100 or 4,000Pack quantities represented

Products include 100-piece packs and a 4,000-count pack.

M4 or M5Shaft-end screw compatibility

Listed black steel shaft-end washers fit M4 or M5 countersunk screws.

13/16–1 1/8 in.Listed shaft-end outside diameters

Specified outside diameters include 13/16 in., 1 in. and 1-1/8 in.

Comparison Guide

Compare the represented finishing washer options

Use this overview to distinguish countersunk washers for workpiece fastening from black steel washers designed for shaft-end finishing.

Product typeKey selection detailsTypical represented use
Countersunk fastening washersSizes include #6, #8, #10, #12, 1/4 in. and 5/16 in.; nickel-plated brass, nickel-plated steel or 18-8 stainless steel options are represented.Seating compatible fasteners in workpieces while helping reduce splitting or stripping.
Black steel shaft-end washersListed for M4 or M5 countersunk screws; stated outside diameters include 13/16 in., 1 in. and 1-1/8 in.Retaining a washer at the shaft face and creating a neat end-cap appearance.
High-quantity #12 washer pack#12 countersunk 18-8 stainless steel washer supplied in a 4,000-count pack.Maintaining supply for larger hardware needs.
Planning Guide

Plan the right fit before choosing

Start With Fit

Match the size and countersunk screw requirement

For standard fastening work, compare the listed washer size with the fastener requirement. Available examples include #6, #8, #10, #12, 1/4 in. and 5/16 in. For shaft-end finishing washers, use the stated countersunk screw compatibility: M4 or M5 on the listed models.

  • Match #6, #8, #10 or #12 washer sizes to the listed fastening requirement.
  • Consider 1/4 in. and 5/16 in. options where those sizes are specified.
  • For shaft-end assemblies, check whether the washer is listed for M4 or M5 countersunk screws.
Compare Product Types

Choose between workpiece fastening and shaft-end finishing

Most represented options are countersunk washers for seating fasteners in workpieces. Their recessed profile helps reduce the chance of splitting or stripping the material. Black steel shaft-end washers use a countersunk screw to retain the washer at the shaft face while providing a neat end-cap detail.

  • Use recessed fastening styles for compatible fastener installations in workpiece materials.
  • Use shaft-end styles when the goal is to cover and finish the end of a shaft.
  • Check stated outside diameter when shaft-end coverage is important.
Select Material and Quantity

Balance the listed construction, appearance and stock level

Material and finish options include 18-8 stainless steel, nickel-plated brass, nickel-plated steel and black steel. Many fastening-washer choices come in 100-piece packs, while a #12 18-8 stainless steel option is available in a 4,000-count pack for larger hardware needs.

  • Choose nickel-plated brass or nickel-plated steel when those listed materials and finishes fit the application.
  • Choose black steel for the represented dark shaft-end appearance.
  • Compare 100-piece packs with the available 4,000-count pack based on anticipated usage.
FAQ

Common questions before buying

What is a countersunk finishing washer used for?

It is used with compatible fasteners to provide a recessed washer profile. In workpiece applications, the recess helps reduce the chance of splitting or stripping the material.

Which finishing washer sizes are represented?

The represented fastening-washer sizes include #6, #8, #10, #12, 1/4 in. and 5/16 in.

What materials and finishes are available?

Represented options include 18-8 stainless steel, nickel-plated brass, nickel-plated steel and black steel.

How do shaft-end finishing washers differ from standard fastening washers?

The listed black steel shaft-end washers are mounted with countersunk screws to retain the washer at a shaft end and create a clean end-cap appearance. They have stated M4 or M5 screw compatibility and specified outside diameters.

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