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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 Power with Corrosion Protection

When your assembly requires maximum locking strength in tight spaces, the hi-collar thru-hardened split lock washer with Yellow Zinc Cr6 plating delivers both precision fit and long-lasting corrosion resistance. Designed specifically for use with socket head cap screws and other small-profile fasteners, this compact lock washer provides superior vibration resistance without adding bulk to your fastening system.

Thru-Hardened Strength for High-Load Applications

Full-Body Heat Treatment

Manufactured from high-quality medium carbon steel, these hi-collar split lock washers are fully thru-hardened—not just surface treated. This ensures uniform hardness throughout the entire washer, providing exceptional resistance to crushing, fatigue, and deformation under high torque. The result is reliable clamp load retention in demanding mechanical and structural assemblies.

Narrow Hi-Collar Design

The reduced outside diameter allows this washer to seat cleanly beneath socket head screws and within confined or counterbored areas. This makes it ideal for precision assemblies where space constraints and accurate alignment are critical, including robotics, automotive systems, and industrial machinery.

Yellow Zinc Cr6 Plating for Enhanced Corrosion Resistance

The Yellow Zinc Cr6 (hexavalent chromate) finish adds a distinctive gold-tone appearance while offering improved corrosion protection compared to plain or clear zinc finishes. This protective coating shields against moisture, light chemicals, and moderate outdoor exposure—making it well-suited for automotive, industrial, and electrical applications.

Specifications & Compliance

Material: Medium carbon steel
Hardening: Thru-hardened for consistent strength
Finish: Yellow Zinc Cr6 plating
Standards: ASME B18.21.1 and DIN 7980
Sizes: Available in common fractional and metric sizes

For compact, high-strength, corrosion-resistant locking performance, choose the hi-collar thru-hardened split lock washer with Yellow Zinc Cr6 plating—engineered to stay tight when it matters most.