S-98449A510 0.115" ID x 0.27" OD ASME B18.21.1 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through internal tooth design that bites into mating surfaces, preventing fastener loosening in high-stress applications
• Exceptional corrosion resistance with 400 Series Stainless Steel construction, ideal for harsh industrial environments and outdoor applications
• Optimized dimensional precision with 0.115" ID and 0.27" OD ensuring perfect fit for No. 4 screws and consistent performance
• Enhanced durability with Rockwell C34 hardness providing reliable performance under repeated loading and thermal cycling
• Industry-standard compliance meeting ASME B18.21.1 specifications for guaranteed quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance, ensuring safe use in regulated industries
• Reliable locking action with internal tooth configuration that maintains secure fastening without damaging contact surfaces

Professional Applications & Engineering Value

This 400 Series Stainless Steel tooth lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. The internal tooth design provides superior locking performance by creating multiple biting points that resist rotational forces and prevent back-off in high-vibration environments like machinery, automotive assemblies, and electrical enclosures. Engineered with Rockwell C34 hardness, these washers maintain their structural integrity under repeated stress cycles while the corrosion-resistant properties of 400 series stainless steel ensure long-term reliability in harsh conditions. The precise 0.115" ID x 0.27" OD dimensions guarantee perfect compatibility with No. 4 fasteners, eliminating installation issues and reducing assembly time. These ASME B18.21.1 compliant washers are particularly valuable in applications where thermal expansion, mechanical vibration, or dynamic loads threaten fastener integrity, providing engineers with a reliable solution for critical connections.

Specification Summary & Compliance

This tooth lock washer features inch system dimensions with internal tooth configuration, manufactured from 400 Series Stainless Steel with Rockwell C34 hardness. The washer meets ASME B18.21.1 specifications for dimensional accuracy and performance requirements. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring environmental responsibility and regulatory adherence for industrial applications worldwide.