Flat washer sems screws

Flat washer sems screws are integrated fasteners combining a screw with a built-in flat washer, eliminating the need for separate components during assembly. This listing specifies head types including pan head, ind hex head, hex head, ind hex washer head, truss head, fillister head, and binding head, with material options in carbon steel, alloy steel, stainless steel, and brass. Sizes range from M1.4 to M12 and #0 to 1/2 inch, with lengths from 3 mm to 125 mm or 3/16 inch to 5 inches, matching standard industrial fastener dimensions.

The screws comply with international standards including IFI, JIS, ISO, DIN, and BS, ensuring compatibility across global manufacturing systems. Material choice affects performance: carbon steel offers strength for general use, alloy steel provides enhanced durability under load, stainless steel resists corrosion in humid or outdoor environments, and brass is selected for non-magnetic or decorative applications. Typical washer diameters range from 1.5 to 2.5 times the screw thread diameter, and thicknesses are generally 10% to 15% of the diameter, consistent with standard industry tolerances.

These assemblies are commonly used in automotive, electronics, appliance, and light machinery manufacturing where rapid assembly and reduced part count are critical. Buyers include OEMs, contract manufacturers, and maintenance suppliers sourcing for high-volume production lines. Packaging is typically bulk or box-packed by weight or count, with custom packaging available on request. Lead times and minimum order quantities must be confirmed directly with the supplier, as these vary by material, size, and order volume.

Bright Year Co., Ltd. is based in Xinzhuang District, New Taipei, Taiwan, with a physical address listed for industrial correspondence. The company operates as a manufacturer and exporter of integrated fasteners, with verified production capabilities in screw and washer assembly. Its trust tier is classified as harbor, indicating confirmed business registration and operational legitimacy. There is no public data on years in operation, employee count, or annual turnover.

The supplier accepts custom designs and new styles, suggesting flexibility in engineering support for client-specific fastener requirements. Response rate and average response time are not recorded, indicating no active customer service automation or live chat system. Buyers should confirm technical details and production capacity directly through written inquiry. No certifications, awards, or client lists are disclosed in the listing.