S-91108A250 0.195" ID x 0.381" 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 tooth design that bites into mating surfaces to prevent loosening under dynamic loads.
- Exceptional corrosion resistance in harsh environments thanks to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
- Precise dimensional fit with 0.195" ID and 0.381" OD ensuring secure fastening for No. 10 screws without slippage.
- Reliable compliance with ASME B18.21.1 standards, guaranteeing consistent performance and interchangeability in industrial assemblies.
- Environmental safety assurance through RoHS 3 and REACH compliance, making them suitable for regulated industries.
- Durable thin profile with thickness ranging from 0.018" to 0.024", providing effective locking without adding bulk.
- Broad industrial applicability due to inch system measurement, facilitating easy integration into existing machinery and equipment.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 316 stainless steel tooth lock washers address critical challenges like vibration-induced fastener failure and corrosion. The internal tooth location ensures maximum grip by embedding into both the screw head and surface, effectively resisting rotational forces in high-stress applications such as automotive assemblies, machinery, and electrical enclosures. Made from 316 stainless steel, they offer superior resistance to chlorides and acidic conditions, reducing maintenance needs in marine or chemical processing plants. Their compliance with ASME B18.21.1 and environmental standards like RoHS 3 and REACH makes them a reliable choice for OEMs and MRO professionals seeking durable, corrosion-resistant lock washers that enhance assembly longevity and safety.
Specification Summary & Compliance
This washer features an internal tooth design with ID of 0.195", OD of 0.381", and thickness between 0.018"-0.024", tailored for No. 10 screws in the inch system. It conforms to ASME B18.21.1 specifications for dimensional accuracy and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations without hazardous substances.
