Cup Point Grub Screw

Description

HBS Fasteners manufactures premium Cup Point Grub Screws, the most widely used variety of set screws in mechanical engineering. Unlike flat or cone points, the cup point features a thin, sharp rim that digs into the mating surface (such as a drive shaft) to create a powerful mechanical interlock. These screws are designed to be installed flush with or below the surface of the component using a hex socket (Allen) drive, making them ideal for space-restricted assemblies and rotating parts.

Technical Specifications

• Standard: Manufactured in compliance with DIN 916, ISO 4029, and ASME B18.3 standards.

• Point Style: Deep cup-shaped tip for maximum “digging” action and holding power.

• Drive Type: Internal Hexagon Socket (Allen Key drive) for high torque application without head stripping.

• Size Range: Available in diameters from M2 to M24, with various lengths and pitch options (Fine/Coarse).

• Design Advantage: Provides excellent gripping strength on both hardened and soft shafts.

Material & Quality Excellence

• Stainless Steel: Available in high-grade Austenitic (A2, A4) for corrosion resistance in moisture-heavy environments.

• Other Materials: Produced in Grade 12.9 High-Tensile Alloy Steel for extreme industrial loads and Carbon Steel.

• In-House Control: Produced using raw materials from our own wire drawing facility. Our precision cold-forging process ensures the socket depth and thread accuracy are perfectly maintained for a strip-free installation.

• Surface Finishing: Options include Black Oxide (for oil-retention), Zinc Plating, and Chrome Plating.

Key Application Areas

• Power Transmission: Securing pulleys, gears, sprockets, and collars to rotating drive shafts.

• Industrial Machinery: Used in assembly lines and conveyor systems where vibration resistance is critical.

• Automotive: Ideal for internal mechanical linkages, sensor mountings, and trim components.

• Precision Instruments: Used in optical equipment and medical devices for fine adjustments and locking.