Keeper Washers | McMaster-Carr

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System of Measurement

OD

Material

Beryllium Copper

Stainless Steel

ID

Screw Size

Retaining Ring Type

Washer Type

Retaining Ring Style

Constant Section

Groove Diameter

Shaft Diameter

Finish

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Thickness

0.010" to 0.013"

0.010" to 0.015"

0.010" to 0.016"

Ring Thickness

Ring OD

Groove Width

Hole Diameter

Performance

Corrosion Resistant

High Temperature

Low Temperature

Tight Clearance

Vibration Resistant

Height

Ring ID

Specifications Met

DFARS Specialty Metals

RoHS

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

Tooth Location

Internal and External

How can we improve?

5,980 Products

Fastening and Joining

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

Retaining Rings

Retaining Rings

Hold components on a shaft

Lock Washers

Resist vibration to prevent fasteners from loosening

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

Socket Retaining Rings

Socket Retaining Rings

Secure sockets and adapters to impact tools

Power Transmission

Bearing Lock Washers

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

Fabricating and Machining

Clamp Holding Washers

Clamp Holding Washers

Replace worn washers on open-arm toggle clamps to keep holding screws in place

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)