Stamped Cup Washer - EPG:5.5 - NFE 27-619/4.8/EPG #10

This cup washer is a fastening component manufactured from steel to provide a secure, flat seating surface for bolts and nuts. It is rated to property class 4.8 in compliance with the NFE 27-619 standard, ensuring it meets specific mechanical performance criteria for general engineering applications. The washer features a nominal diameter of 5.5mm, aligning with EPG 5.5 specifications, which is typical for medium-sized fastening systems. Buyers select this item for its standardized geometry and material properties, which offer a cost-effective solution for distributing load and preventing damage to the base material. To choose the correct size, verify that the 5.5mm nominal diameter matches your bolt shank and that the 4.8 property class is sufficient for the structural demands of your assembly.