Grub Screw

Description

HBS Fasteners manufactures a comprehensive range of Grub Screws, the essential choice for applications where a protruding bolt head is impractical or hazardous. Driven by an internal hexagonal socket (Allen drive), these screws exert powerful compressional force to lock components—such as gears, pulleys, or collars—firmly onto a shaft. By eliminating the external head, they allow for compact designs in rotating machinery and high-precision instruments.

Technical Specifications

• Drive Type: Internal Hexagon Socket (Allen), Slotted, or Star (Torx) drives.

• Point Variations: Available in multiple tip styles including Cup, Flat, Cone, Dog, and Knurled points to suit different grip requirements.

• Thread Type: High-precision Metric, BSW, UNC, and UNF threads with tight tolerances for a secure fit.

• Size Range: Manufactured in diameters from M1.6 to M24 and custom lengths to fit various industrial depths.

• Standard Compliance: Produced in accordance with DIN 913, DIN 914, DIN 915, DIN 916, and ISO equivalents.

Material & Quality Excellence

• Stainless Steel: Available in A2 (304) and A4 (316) for superior rust and chemical resistance.

• Other Materials: Produced in Grade 12.9 High-Tensile Alloy Steel for heavy-duty industrial use, as well as Carbon Steel and Brass.

• In-House Control: Using raw materials from our own wire drawing facility, we ensure every screw has the correct core hardness to prevent socket stripping under high torque.

• Surface Finishing: Options include Black Oxide (standard for high-tensile), Zinc Plating, Nickel Plating, and specialized anti-friction coatings.

Key Application Areas

• Rotating Machinery: Securing pulleys, cams, and flywheels to drive shafts to prevent axial or rotational slippage.

• Electronics & Hardware: Used in door handles, knobs, and small electronic enclosures for a sleek finish.

• Automotive Engineering: Critical for internal engine components, steering mechanisms, and trim assemblies.

• Precision Tooling: Ideal for setting the position of jigs, fixtures, and optical lenses where fine adjustments are required.