Cone Point Screw

Product Introduction

• Standard Name: Cone Point Set Screw (Cone-End Set Screw / Top Screw)

• Common Names: Cone-End Stop Screw, Cone-End Locating Screw, Pointed-End Machine Screw

• Product Definition: A specialized fastener featuring a headless design, threaded shank, and conical tip. Its tapered point provides high-precision point-to-point contact, applying pressure or creating micro-indentations in material surfaces to achieve accurate radial positioning, prevent relative sliding between components, or adjust axial clearance.

Key Features of the Cone Point Screw

• Tapered End Design: The end is sharply tapered (typically 45° or 60° angle), providing high concentrated

  pressure, embedding into the surface of the fixed component, forming a secure position and

  preventing slippage.

• Headless Structure: Fully threaded and headless, using an Allen key for drive, concealed and

  non-protruding after installation.

• Materials and Coatings: Commonly used alloy steel, stainless steel, or carbon steel, with finishe

  s including blackening, zinc plating (ZP), or a natural stainless steel luster, providing corrosion resistance.

• Various Sizes: Diameters M3-M20, various lengths, conforming to standards such as DIN 914 and

  ASME B18.3.

• Advantages: Precise positioning, strong vibration resistance, concealed installation, but may damage

  the fixed surface.

Working Principle

• Insertion and Drive: The Allen key rotates the hexagonal socket, matching the thread with the internal

  thread of the hole.

• Preload Generation: When torque is applied, the screw advances, and the tapered point embeds into

  the surface of the fixed component (such as a shaft or sleeve), forming a recess.

• Positioning and Anti-Loosening: The concentrated pressure at the tapered point generates mechanical

  locking, resisting axial slippage and vibration loosening; the principle involves material deformation

  and frictional gripping.

• Load Distribution: Primarily for shear force and positioning; not suitable for high tensile loads.

Product Applications

• Mechanical Transmissions: Fixing pulleys, gears, or couplings on shafts to prevent axial movement.

• Precision Instruments: Positioning machine tools, pumps, valves, or robot components for

  high-precision anti-loosening.

• Automotive and Motorcycles: Fixing handles, knobs, or drive shafts.

• Electronic Equipment: Assembling motors or adjusting mechanisms for concealed installation.

• Industrial Manufacturing: Universal positioning screws suitable for shaft and sleeve connections.