Brass flat washer (black nickel plated) / BW-B
This product is a washer made of brass with a black nickel plating on its surface. It is used by inserting it between the bolt or screw and the counterpart material during tightening. By distributing the load when tightening the screw over a wide area, it reduces the stress on the tightening surface, helps prevent dents and scratches on the counterpart material, and protects the seating surface. Additionally, using a flat washer stabilizes the fastening surface and supports the tightening condition of the bolt or screw. It features a calm black appearance due to the black nickel plating. With its black finish that suppresses light reflection, it is suitable for assembling various devices and enclosures where areas should not be conspicuous, as well as for designs that consider aesthetics and decorative elements.
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basic information
■Specifications - Material: Brass - Treatment: Black nickel plating ■Size Variation - Nominal diameter: For M3 / For M4 ■EU-RoHS - Compliant with EU-RoHS2
Price information
For more details, please check our website or catalog, or feel free to contact us.
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Applications/Examples of results
We offer a variety of products that can be used for various applications such as printed circuit board mounting, electronic component mounting, semiconductor mounting, relay terminal mounting, distribution board components, robot components, industrial machinery, machine tool components, water treatment machinery components, FA equipment, mobile communications, mobile mobility, and base station-related components.
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We, Hirosugi Instruments, are a comprehensive manufacturer of mechanical and electronics parts, dealing with spacers, terminals, washers, bushes, screws, and more. Our wide range of products boasts a diverse lineup that matches various applications, and we have received high praise from customers in various industries for providing multifunctional, high-quality products with short delivery times and low costs. From product development to design, procurement, and technical support, we provide one-stop support through our product offerings. ■ Company Features ■ 1: Offering a diverse selection of over 118,000 standard parts. 2: One of the largest spacer lineups in Japan. 3: Free shipping for orders over 3,000 yen (excluding tax). 4: Orders can be placed starting from a minimum lot of 50 pieces. 5: High-quality standard products at ISO levels. 6: Fast delivery from our own stock for all products. 7: Affordable pricing with cost control. 8: Support for issuing various certificates. 9: Actively supporting the production of custom products. 10: Providing consistent and specialized services.





