Bugle Head Self Drilling Screw Black

Product Introduction

• Standard Name: Bugle Head Self-Tapping Screw or Drywall Screw.

• Common Names: Gypsum Board Screw, Bugle Head Drywall Screw, Self-Tapping Drywall Screw.

• Product Definition: A screw specifically designed for installing gypsum board/drywall panels. Its bell-shaped countersunk head smoothly countersinks into the panel surface during tightening, while the sharp point and specialized thread facilitate direct penetration into wood or metal studs. The surface is typically black phosphated or zinc-plated.

Bugle Head Self-Drilling Screw Black Key Features

• Bugle Head Design: The flat-topped conical head gradually embeds into the drywall during installation,

  preventing tearing and ensuring a smooth surface for easy putty application.

• Self-Drilling Tail: The tip has a tek point, allowing for drilling, tapping, and securing without pre-drilling,

  all in one step. Suitable for metal joists or thin steel sheets.

• Black Phosphate/Oxide Coating: Matte black surface provides basic rust protection, wear resistance,

  and lubrication, reducing light reflection and suitable for dry indoor environments.

• Drive Type: Typically Phillips head, easy to drive with power tools and prevents slippage.

• Various Sizes: Commonly #6-#10 diameter, length 1"-3" (25-75mm), carbon steel.

Working Principle

• Drilling Stage: The drill tip penetrates the material (e.g., drywall + metal joists), quickly drilling a pilot hole.

• Tapping and Fixing: The thread follows the cut to form an internal thread, generating axial clamping force.

• Head Embedding: The flared head gradually sinks into the paper surface, evenly distributing pressure

  without protruding; the black coating reduces friction and improves efficiency.

• Installation Control: The cross-groove design ensures precise drive, preventing excessive tearing of the

  paper; the principle involves drilling, cutting, and friction interlocking.

Product Applications

• Interior Decoration: Fixing drywall to steel framing, ceiling or partition wall construction, fast and efficient.

• Commercial Buildings: Drywall systems for offices or shops, providing a smooth surface for easy painting.

• Home DIY: Wall panel installation or repair; the black appearance reduces glare.

• Sheet Metal and Ventilation: Fixing lightweight metal frames or ducts; easy self-drilling.

• Professional Construction: Mass drywall projects, suitable for metal framing environments.