Tab, Key, & Notch Washers

Tab Lock Washers

The tabs of the Tab Lock Washer hold the nut in place in relation to the chassis.

Definition:
Tab lock washers are designed to prevent both the washer and the nut from rotating in an assembly. The tabs lock over the edge of the assembly base or in a predrilled hole. The ears are bent up by the user to lock the nut in place.

Tab Lock Washers are available in the following materials and finishes:

  • Cold Rolled Steel (Steel): Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Phosphate, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II
  • Stainless Steel 301-304: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Passivate, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II
Tab Lock Washer: 5748 Tab Lock Washer: 5749 Tab Lock Washer: 5745 - Style 1 Tab Lock Washer: 5745 - Style 2
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Tab Washers

Formed tab prevents washer from rotating or used as a stop.

Internal-External tab washer prevents nut from loosening.

Prevents shaft from turning.

Definition:
Tab washers are available with a wide variety of both internal and external tab configurations. The tabs prevent the washer from rotating under the bolt or in relation to a shaft. The internal tabs prevent shaft rotation, whole external tabs can lock into holes or over the edge of the assembly base.

Tab Washers are available in the following materials and finishes:

  • Cold Rolled Steel (Steel): Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Phosphate, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II
Internal Tab Formed Key Washer: 5739 Single Internal Tab Washer: 5746 Double Internal Tab Washer: 5747 Single External Tab Washer: 5741 Single Internal-External Tab Washer: 5744 Multiple External-Internal Tab Washer: 5743 Multiple External Tab Washer: 5742-Style 1 (2 Tabs) Multiple External Tab Washer: 5742-Style 2 (4-23 Equally Spaced Tabs) Multiple External Tab Washer: 5742-Style 3 (7 Unevenly Spaces Tabs)
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Key Washers

Definition:
Formed key washers are designed to lock into the base material or assembly with the external key to prevent the washer’s rotation. The internal tab prevents the shaft from rotating.

Formed Key Washers are available in the following materials and finishes:

  • Cold Rolled Steel (Steel): Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Phosphate, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II
  • Stainless Steel 301-304: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Passivate, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II
Internal Tab Formed Key Washer: 5739 Formed Key Washer: 5740
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Notch Washers

Key locks shaft into washer and prevents it from turning.

Definition:
Notch washers are designed with both internal and external notches depending on their application. Notch washers are generally used with a key to prevent the rotation of the washer relative to the shaft.

Notch Washers are available in the following materials and finishes:

  • Cold Rolled Steel (Steel): Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Phosphate, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II
  • Stainless Steel 301-304: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Passivate, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II
Single Internal Notch Washer: 5750 Single Internal Notch Washer: 5752 Double Internal Notch Washer: 5751 Single External Notch Washer: 5753 Double External Notch Washer: 5754
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