S-91104A032 0.45" ID x 0.776" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through the split lock design that maintains tension under dynamic loads, preventing fastener loosening in high-stress applications.
• Exceptional corrosion protection with zinc yellow-chromate plating, extending service life in harsh or outdoor industrial environments.
• High-strength reliability from Grade 8 steel and Rockwell C38 hardness, ensuring consistent performance under heavy-duty mechanical stress.
• Precise dimensional fit with 7/16" screw size compatibility, 0.45" ID, and 0.776" OD for accurate installation and uniform load distribution.
• Industry-standard compliance with ASME B18.21.1 specifications, guaranteeing interchangeability and engineering consistency.
• Enhanced safety and durability from the standard split lock type design, providing reliable spring action and reusability in maintenance cycles.
• Regulatory adherence with REACH compliance, ensuring safe use in regulated markets and environmental responsibility.

Professional Applications & Engineering Value

Engineered for demanding environments, these Grade 8 split lock washers address critical challenges in industrial assembly where vibration-induced loosening compromises safety and operational integrity. The zinc yellow-chromate plated steel construction provides a robust barrier against corrosion, making them ideal for automotive, machinery, and construction applications exposed to moisture or chemicals. With a Rockwell C38 hardness and standard split lock design, they deliver consistent spring force to maintain clamp load, reducing maintenance frequency and downtime. The 7/16" size and ASME B18.21.1 conformity ensure seamless integration into existing inch-system fastening setups, offering engineers a reliable solution for heavy-duty bolted joints that require long-term vibration resistance and corrosion protection.

Specification Summary & Compliance

This washer meets dimensional standards with an ID of 0.45", OD of 0.776", and thickness of 0.109", designed for 7/16" screw sizes. Manufactured as a standard split lock washer type from Grade 8 steel with Rockwell C38 hardness, it complies with ASME B18.21.1 for mechanical and dimensional requirements. The product is REACH (EC 1907/2006) compliant as of June 14, 2023, adhering to substance restrictions for safe industrial use.