Engineering Resources

Engineering Data
Engineering Reference Handbook
How to Specify Custom Parts
Engineering Reference Handbook

Bus Bars Washers - C Shaped
Clamps and Brackets Washers - Centering
Expansion Plugs Washers - Countersunk
Grounding Straps Washers - Finishing
Insulators Washers - Flat
Jumpers Washers - Lock
Retaining Rings Washers - Odd Shaped ID
Sheet Metal Nuts and Strips Washers - Odd Shaped OD
Solder Lugs Washers - Retaining
Spacers Washers - Retention
Spring Clips Washers - Shoulder
Tags Washers - Split
Washers - Spring
Washers - Tab, Key, and Notch
Washers - Terminal Cup


Retaining Rings

Internal Retaining Ring, Axially Assembled Internal Retaining Ring,
Standard Internal Retaining Ring, Tapered Section Internal Retaining Ring

Definition: Internal retaining rings are designed to hold components or assemblies on a shaft, or inside a housing. An internal retaining ring is installed in a machined groove that leaves a portion of the retaining ring exposed to act as a shoulder to hold the component or assembly in place. Axially assembled internal retaining rings are installed horizontally along the center point of an axis. To ensure contact with the grooved housing along its entire periphery (ensuring high thrust load capacity), ensuring high thrust load capacity, a tapered section internal retaining ring decreases symmetrically from the center to the free ends, remaining circular when contracted or expanded within the limits of normal use.

Internal Retaining Rings are available in the following materials and finishes:

  • Spring Steel: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II
  • Stainless Steel 15PH-7MO: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Passivate, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

Internal Retaining Ring: 2725
Internal Retaining Ring: 2726

Example: Internal Retaining Ring





External Retaining Ring, Axially Assembled External Retaining Ring,
Standard External Retaining Ring, Tapered Section External Retaining Ring

Definition: External retaining rings are designed to hold components or assemblies onto a shaft, or inside a housing. An external retaining ring is installed in a machined groove that leaves a portion of the retaining ring exposed to act as a shoulder to hold the component or assembly in place. Axially assembled external retaining rings are installed horizontally along the center point of an axis. To ensure contact with the grooved housing along its entire periphery (ensuring high thrust load capacity), ensuring high thrust load capacity, a tapered section external retaining ring decreases symmetrically from the center to the free ends, remaining circular when contracted or expanded within the limits of normal use.

External Retaining Rings are available in the following materials and finishes:

  • Spring Steel: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II
  • Stainless Steel 15PH-7MO: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Passivate, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

External Retaining Ring: 2727
External Retaining Ring: 2728

Example: External Retaining Ring





E-Style Retaining Ring, Radially Assembled E-Style Retaining Ring,
Standard E-Style Retaining Ring, Tapered Section E-Style Retaining Ring

Definition: E-style retaining rings are designed to hold components or assemblies onto a shaft, or inside a housing. An e-style retaining ring is radially assembled or installed externally into machined grooves on a shaft. It requires a deeper groove for the three prongs to make contact and provide exceptional thrust load capacity to hold the component or assembly in place. A tapered section e-style retaining ring decreases symmetrically from the center to the free ends, remaining circular when contracted or expanded within the limits of normal use.

E-style Retaining Rings are available in the following materials and finishes:

  • Spring Steel: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II
  • Stainless Steel 15PH-7MO: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Passivate, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

E-style Retaining Ring: 2729
E-style Retaining Ring: 2730

Example: E-style Retaining Ring