Need SEMS Screws That Eliminate Secondary Washer Assembly Operations?

Our chamfered Phillips hex head SEMS screws with pre-assembled A2 flat washers streamline your electronics assembly line by combining fastener and washer in one component. With ISO-compliant thread rolling and precision inspection across 7+ measurement points, you'll reduce assembly time, eliminate loose washer handling, and ensure consistent torque performance. Available in multiple stainless steel grades for corrosion resistance. Contact us for samples tailored to your specific electronic enclosure requirements.

Every SEMS screw is inspected during production and before shipping, complying with ISO Working Instructions using advanced measurement tools including calipers, protrusion-height gages, micrometers, 2.5D and 2D projectors, recess penetration gages, and M5 ring gages. Critical measurement points include across the flat, across the corner, head height, length, major diameter, thread angle, and pitch, while A2 washer specifications are verified for outside diameter, height, and rec diameter. With production capabilities spanning head diameters from M1.6~M16/#00~#5/8 and lengths from 1/8"~12"/3.175mm~600mm, we deliver customized SEMS fastening solutions backed by 45 years of Taiwan manufacturing excellence.