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Cup Point Socket Set Screw
This product is a Hexagon Socket Cup Point Set Screw (alias: Headless Screw, Machine Screw, Locking Screw, Socket Set Screw with Cup Point), a high-strength fastener designed for secure part fixation and anti-loosening. It complies with German Standard DIN916 and Chinese National Standard GB80.
Product Description
This product is a Hexagon Socket Cup Point Set Screw (alias: Headless Screw, Machine Screw, Locking Screw, Socket Set Screw with Cup Point), a high-strength fastener designed for secure part fixation and anti-loosening. It complies with German Standard DIN916 and Chinese National Standard GB80.
Crafted from Grade 10.9 high-quality alloy steel (tensile strength ≥1000MPa, elongation ≥12%), it undergoes black oxide surface treatment (salt spray test ≥72 hours without red rust), offering excellent strength, toughness, and corrosion resistance. The product features a hexagon socket drive design (compliant with ISO 4762) for high-torque installation (max torque: 20N·m) without slipping, and a cup point structure (spherical concave end face) to avoid damaging mating parts, making it suitable for high-precision applications (e.g., precision machinery, instruments).
Primarily used for part fixation in machinery, furniture, and industrial facilities, it ensures the stability of assembled structures and prevents loosening caused by vibration or impact.
Crafted from Grade 10.9 high-quality alloy steel (tensile strength ≥1000MPa, elongation ≥12%), it undergoes black oxide surface treatment (salt spray test ≥72 hours without red rust), offering excellent strength, toughness, and corrosion resistance. The product features a hexagon socket drive design (compliant with ISO 4762) for high-torque installation (max torque: 20N·m) without slipping, and a cup point structure (spherical concave end face) to avoid damaging mating parts, making it suitable for high-precision applications (e.g., precision machinery, instruments).
Primarily used for part fixation in machinery, furniture, and industrial facilities, it ensures the stability of assembled structures and prevents loosening caused by vibration or impact.
Product Parameter
Key Specifications (Complies with GB/T 79 (Chinese National Standard for Set Screws)):
Note: Non-standard customization is available (e.g., adjusting nominal thread diameter, length, material) to meet special assembly requirements. Minimum order quantity varies by specification (1000 pieces for Standard Specifications).
| Nominal Thread Diameter (M) | Nominal Length (mm) | Example Specifications |
| M3 | 3–12 | M36, M38 |
| M4 | 4–16 | M48, M412 |
| M5 | 5–25 | M510, M520 |
| M6 | 6–30 | M612, M625 |
| M8 | 8–40 | M816, M830 |
| M10 | 10–50 | M1020, M1040 |
| M12 | 12–60 | M1225, M1250 |
Note: Non-standard customization is available (e.g., adjusting nominal thread diameter, length, material) to meet special assembly requirements. Minimum order quantity varies by specification (1000 pieces for Standard Specifications).
Product Feature
High-Strength Material: Made of Grade 10.9 alloy steel, with tensile strength ≥1000MPa and elongation ≥12%, suitable for heavy-load applications (e.g., industrial building materials, vehicle & ship parts). It can withstand large loads without breaking.
Cup Point Design Advantage: The spherical concave end face reduces the contact area with mating parts (e.g., shafts, gears) during installation, avoiding scratching or damaging their surfaces. This is especially beneficial for precision machinery (e.g., machine tools, instruments).
Hexagon Socket Drive Advantage: The hexagon socket (compliant with ISO 4762) fits tightly with wrenches, enabling high-torque installation without slipping. It is ideal for frequent disassembly and assembly (e.g., equipment maintenance, furniture adjustment).
Black Oxide Finish Advantage: The black oxide treatment forms a dense oxide film, providing excellent corrosion resistance (≥72 hours salt spray test without red rust). It is suitable for humid or mildly corrosive environments (e.g., food industry, ship parts).
Customization Service: The factory has complete non-standard customization capabilities. Customers can adjust thread parameters (e.g., nominal diameter, pitch), length, and surface treatment (e.g., nickel plating, black oxide) to meet specific assembly requirements (e.g., irregular part fixation, high-corrosion environments).
Application Fields
Home Decoration: Used for furniture assembly (e.g., sofas, wardrobes, bookshelves, bed frames) to fix connectors (e.g., hinges, slides, shelf brackets). The cup point design ensures flush mounting, maintaining a tidy appearance and avoiding protrusions that could scratch users.
Industrial Building Materials: Used for connections in steel structure buildings (e.g., factories, warehouses, bridges), scaffolding, and railway facilities. It bears heavy loads (e.g., steel beam splicing, equipment fixation) to ensure structural safety.
Medical Equipment: Used for part fixation in medical devices (e.g., operating tables, imaging equipment, rehabilitation devices, hospital beds). The black oxide finish meets the hygiene requirements of the medical industry (no harmful substances), and the high precision ensures stable device operation.
Food Industry: Used for assembly of food processing machinery (e.g., packaging machines, conveyor lines, mixers, sealing machines). It is corrosion-resistant (against acid-base erosion from food raw materials) and easy to clean (smooth surface with no dead corners), complying with food-grade hygiene standards (GB 14930.1-2016).
Vehicle & Ship Parts: Used for fixation of engine components (e.g., cylinder heads, camshafts), chassis parts (e.g., suspension brackets, drive shafts), and interior parts (e.g., dashboards, seats) in automobiles/ships. It withstands vibration and impact to ensure operating stability.
Communication Industry: Used for internal part fixation in communication equipment (e.g., base stations, switches, routers, fiber optic terminals). The cup point design ensures flush mounting, which does not affect the device’s appearance. The corrosion resistance (against humid environments in machine rooms) ensures stable signal transmission.
Cup Point Design Advantage: The spherical concave end face reduces the contact area with mating parts (e.g., shafts, gears) during installation, avoiding scratching or damaging their surfaces. This is especially beneficial for precision machinery (e.g., machine tools, instruments).
Hexagon Socket Drive Advantage: The hexagon socket (compliant with ISO 4762) fits tightly with wrenches, enabling high-torque installation without slipping. It is ideal for frequent disassembly and assembly (e.g., equipment maintenance, furniture adjustment).
Black Oxide Finish Advantage: The black oxide treatment forms a dense oxide film, providing excellent corrosion resistance (≥72 hours salt spray test without red rust). It is suitable for humid or mildly corrosive environments (e.g., food industry, ship parts).
Customization Service: The factory has complete non-standard customization capabilities. Customers can adjust thread parameters (e.g., nominal diameter, pitch), length, and surface treatment (e.g., nickel plating, black oxide) to meet specific assembly requirements (e.g., irregular part fixation, high-corrosion environments).
Application Fields
Home Decoration: Used for furniture assembly (e.g., sofas, wardrobes, bookshelves, bed frames) to fix connectors (e.g., hinges, slides, shelf brackets). The cup point design ensures flush mounting, maintaining a tidy appearance and avoiding protrusions that could scratch users.
Industrial Building Materials: Used for connections in steel structure buildings (e.g., factories, warehouses, bridges), scaffolding, and railway facilities. It bears heavy loads (e.g., steel beam splicing, equipment fixation) to ensure structural safety.
Medical Equipment: Used for part fixation in medical devices (e.g., operating tables, imaging equipment, rehabilitation devices, hospital beds). The black oxide finish meets the hygiene requirements of the medical industry (no harmful substances), and the high precision ensures stable device operation.
Food Industry: Used for assembly of food processing machinery (e.g., packaging machines, conveyor lines, mixers, sealing machines). It is corrosion-resistant (against acid-base erosion from food raw materials) and easy to clean (smooth surface with no dead corners), complying with food-grade hygiene standards (GB 14930.1-2016).
Vehicle & Ship Parts: Used for fixation of engine components (e.g., cylinder heads, camshafts), chassis parts (e.g., suspension brackets, drive shafts), and interior parts (e.g., dashboards, seats) in automobiles/ships. It withstands vibration and impact to ensure operating stability.
Communication Industry: Used for internal part fixation in communication equipment (e.g., base stations, switches, routers, fiber optic terminals). The cup point design ensures flush mounting, which does not affect the device’s appearance. The corrosion resistance (against humid environments in machine rooms) ensures stable signal transmission.
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