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  • Yellow Zinc Cr6 Plated Hi Collar Thru Hardened Split Lock Washer

Hi Collar Thru Hardened Split Lock Washer Yellow Zinc Cr6 Plating

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Hi-Collar Thru-Hardened Split Lock Washer with Yellow Zinc Cr6 Plating – Compact Strength and Corrosion Protection Combined

If your application demands both tight locking security and corrosion resistance in a compact design, the hi-collar thru-hardened split lock washer with Yellow Zinc Cr6 plating is an exceptional choice. Engineered for precise fitment with socket head cap screws and other small-profile fasteners, this washer offers robust locking power in limited space environments.

Constructed from medium carbon steel, these washers are thru-hardened, meaning the hardness and strength extend throughout the entire part—not just on the surface. This through-hardening treatment gives the washer excellent fatigue resistance, tension retention, and mechanical integrity, making it ideal for high-vibration and high-load conditions.

The hi-collar design features a narrow outer diameter, allowing the washer to nest perfectly under socket screw heads and within countersunk areas—without interfering with surrounding components. This makes it ideal for applications where space savings and precision alignment are critical.

The Yellow Zinc Cr6 plating not only adds a distinctive gold-tone finish but also delivers enhanced corrosion resistance compared to clear zinc. The hexavalent chromate layer offers superior protection in moderately corrosive environments, such as automotive, industrial, or indoor/outdoor electrical installations.

Material & Coating:

  • Material: Medium carbon steel

  • Hardening: Thru-hardened for full-body strength

  • Finish: Yellow Zinc Cr6 plating for corrosion resistance and visual identification

Dimensions & Tolerances:

  • Complies with ASME B18.21.1 and DIN 7980

  • Tight tolerances for accurate fit with socket head screws

  • Available in common inch and metric sizes

Mechanical Properties:

  • High spring tension resists loosening

  • Maintains bolt tension in vibration-prone assemblies

  • Designed for compact, high-strength joints

Applications:

  • Precision tools and robotics

  • Automotive and motorsport assemblies

  • Industrial machinery and motion systems

  • Electrical and electronic enclosures

For compact, corrosion-resistant locking performance, the hi-collar thru-hardened split lock washer with Yellow Zinc Cr6 is your go-to solution. Ready to tighten up your next project? We've got the washers that fit.