Cup Head Combination Screws Grade 8.8 ISO Standard socket head
Size：M2-M36
Manufacturing standard：ISO, GB, JIS, DIN, BS and ANSI standards, or drawings provided by customers.
Materials： iron, carbon steel, alloy steel, copper, stainless steel, plastics, high-temperature alloy, copper alloy, nickel-base alloy, high-strength alloy, corrosion-resistant alloy, etc.
Process： cold heading, punching, turning, milling, wire cutting, etc.
Treatment/Finishing: Brushing、Anodizing、Zinc Plated、Nickel Plated、Sn Plated.
Requirements： No Burrs、Scratches、Dents、Pits
Application： Structural Steel; Metal Building; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating
Packing：bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
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Product Name
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Cup Head Combination Screws
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Size
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M1-M56 or Customized Size
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Material
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Steel,Stainless Steel,Alloy steel,Carbon Steel,Brass,Aluminum and So on
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Thread Type
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Fine Thread Or Coarse Thread or Hi-Lo Thread
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Grade
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4.8,8.8,10.9,12.9.etc
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Standard
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GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc
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Non-standards
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OEM is available, according to drawing or samples
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Finish
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Plain, black, zinc plated/according to your requirement
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Certification
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ISO9001,IATF16949,ISO14001
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Package
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according to customers requirement
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USE
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Automobile, aviation, new energy, high-speed rail
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Cup head combination screws are essential fasteners in precision mechanical assemblies and industrial installations. Designed with a wide bearing surface and built-in washer feature, these screws distribute clamping force effectively across materials. Common drive types include internal hex (Allen head) and Torx slots, both offering superior torque transmission and minimizing cam-out risks during installation.
Manufactured in Grade 8.8 carbon steel and available with zinc plated or black oxide finishes, these screws meet corrosion resistance and tensile strength standards for demanding environments. They are compliant with DIN ISO 10666 and similar international norms, ensuring compatibility across global assembly lines.
The cup head structure allows flush installation without damaging the work surface, while the combination thread design supports stable performance in both metal-to-metal and metal-to-wood applications. With their engineered fit and resistance to loosening under vibration, cup head combination screws are widely used in automotive panels, equipment casings, and modular structures requiring repeated access and reassembly.
