S-98449A113 0.927" ID x 1.41" OD ASME B18.21.1 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with internal teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Exceptional corrosion resistance from 400 Series Stainless Steel construction, ideal for harsh industrial environments
• Enhanced durability and wear resistance with Rockwell C34 hardness, ensuring long service life in high-stress applications
• Precise dimensional accuracy with 0.927" ID and 1.41" OD, providing reliable fit for 7/8" screw assemblies
• Compliance with ASME B18.21.1 standards guarantees consistent quality and interchangeability in industrial applications
• Environmental regulatory compliance with RoHS 3 and REACH, making them safe for global supply chains
• Optimized thickness range (0.052-0.060") ensures proper spring action and locking force in inch-based systems

Professional Applications & Engineering Value

This internal tooth lock washer delivers critical engineering solutions where vibration-induced fastener failure is a major concern. Manufactured from 400 Series Stainless Steel, it provides excellent corrosion resistance while maintaining the mechanical strength needed for heavy machinery, automotive, and construction applications. The strategically positioned internal teeth create multiple biting points that securely lock the fastener, distributing load evenly and preventing rotational loosening. With its Rockwell C34 hardness and precise dimensions, this washer maintains consistent performance in high-temperature and high-vibration environments, reducing maintenance frequency and downtime. The ASME B18.21.1 compliance ensures dimensional consistency and reliable performance across industrial applications requiring 7/8" screw fastening systems.

Specification Summary & Compliance

This internal tooth lock washer features precise inch dimensions with 0.927" ID, 1.41" OD, and thickness ranging 0.052-0.060". Manufactured to ASME B18.21.1 specifications for tooth lock washers, it ensures dimensional accuracy and performance reliability. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, containing no restricted substances and meeting current SVHC requirements as of June 14, 2023. Designed specifically for 7/8" screw applications in inch measurement systems.