S-98449A500 0.089" ID x 0.2" OD ASME B18.21.1 Internal-Tooth Lock Washers
Internal-Tooth Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance with internal teeth that bite into mating surfaces, preventing loosening under dynamic loads.
- Excellent corrosion resistance provided by 400 Series Stainless Steel, ideal for harsh or outdoor environments.
- Enhanced durability and wear resistance from a Rockwell C34 hardness, ensuring long service life.
- Precise fit for No. 2 screws with a 0.089" ID and 0.2" OD, offering reliable fastening in compact assemblies.
- Guaranteed performance and interchangeability through compliance with the ASME B18.21.1 standard.
- Safe for regulated industries with full compliance to RoHS 3 and REACH environmental directives.
- Consistent quality in inch measurements ensuring easy integration with existing imperial system designs.
Professional Applications & Engineering Value
This internal tooth lock washer is precision-engineered from 400 Series Stainless Steel to solve critical fastening challenges in high-vibration environments. The internal tooth location ensures the teeth engage securely with the screw head or nut, providing a locking action that resists rotational loosening caused by machinery, engines, or transportation equipment. Its Rockwell C34 hardness provides the necessary stiffness to maintain tooth integrity without fracturing, while the stainless steel material offers inherent corrosion resistance, making it suitable for automotive, aerospace, and industrial machinery applications where reliability is non-negotiable. The compact size (0.089" ID) is specifically designed for No. 2 screw size assemblies, ensuring a perfect fit and optimal performance in precision components.
Specification Summary & Compliance
This washer features an Internal Diameter (ID) of 0.089", Outer Diameter (OD) of 0.2", and a Thickness range of 0.010-0.016". It is manufactured to meet the dimensional and functional requirements of the ASME B18.21.1 standard. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in various global markets.
