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Steel cup screw with flange, trivalent chromate black.
This is a screw that adds two functions to a pan head screw: a flat washer (large seating surface) and a spring washer (for preventing loosening). It enhances vibration resistance and increases the anti-loosening effect. The cup screw is a registered trademark of Nitto Seiko Co., Ltd. It is compliant with EU-RoHS standards.
Iron precision machinery type 0, grade 3 + B-tight screw, trivalent chromate black.
Specifications: This product conforms to the Japan Camera Industry Association standard (JCIS10-70) and has a smaller screw head compared to JIS standard screws with a cross slot. It can be tightened while forming a female thread in the counterpart material, eliminating the need for female thread processing or nuts. The cross-section of the screw part is shaped like a rice ball (triangular), allowing for fastening with a smaller torque compared to tapping screws. It can be used with both metal plates and plastic materials. It enables standardization and integration of screws during assembly manufacturing. It is compliant with EU-RoHS regulations.
