S-91117A201 0.219" ID x 1" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in humid or outdoor environments
• Precise dimensional fit with 0.219" ID and 1" OD, ensuring reliable seating and load distribution for No. 10 screws
• Enhanced durability from Rockwell B40 hardness, resisting deformation under sustained pressure
• Consistent thickness tolerance (0.110-0.140") for uniform clamping force and vibration resistance
• Regulatory compliance with RoHS 3 and REACH standards, meeting global industrial safety requirements
• Broad compatibility with inch-system fasteners, simplifying sourcing for North American machinery and equipment

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these zinc-plated steel flat washers address critical challenges in machinery assembly, automotive components, and structural frameworks. The corrosion-resistant zinc coating prevents rust formation in high-moisture environments, while the Rockwell B40 hardness ensures the washer maintains its shape under repetitive load cycles. With precise inch-system dimensions (0.219" ID x 1" OD), it eliminates play when paired with No. 10 screws, distributing pressure evenly to prevent surface damage and bolt loosening. Ideal for vibration-prone equipment and outdoor installations, this washer enhances joint integrity while complying with international environmental regulations.

Specification Summary & Compliance

Manufactured to standard inch-system flat washer dimensions with ID 0.219", OD 1", and thickness range 0.110-0.140". Material hardness certified to Rockwell B40 for consistent performance. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a) and REACH (EC 1907/2006) SVHC standards as of 01/17/2023, ensuring safe use in regulated industries.