Bugle Head Drywall Screw Coarse Black

Product Introduction

• Standard Name: Drywall Screw, Bugle Head, Coarse Thread, Black Finish.

• Common Names: Black Phosphated Bugle Head Coarse Thread Drywall Screw, Black Coarse Thread Drywall Screw.

• Product Definition: A specialized screw designed to secure gypsum board/drywall panels to wooden studs. Key features include: a bugle-shaped countersunk head that flushes smoothly into the panel surface without tearing the finish; coarse threads providing strong grip in wood; and a black phosphated finish offering superior rust resistance compared to standard electrogalvanized coatings. Typically installed using a Phillips screwdriver.

Bugle Head Drywall Screw Coarse Black Key Features

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

  preventing tearing of the drywall surface and ensuring a smooth finish for easy putty application.

• Coarse Thread: Sparse, coarse threads suitable for securing to wood joists, providing excellent grip and

  quick engagement.

• Black Phosphate or Black Oxide Coating: Matte black finish provides basic rust protection, abrasion

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

• Drive Type: Typically Phillips head (#2 point), easy to drive with a power screwdriver and prevents slippage.

• Various Sizes: Commonly #6-#10 diameter, length 1"-4" (25-100mm), sharp self-tapping tip.

Working Principle

• Self-Tapping Entry: The tip penetrates the drywall, and the coarse thread cuts and compresses the

  board and wood joists, creating a strong grip.

• Head Embedding: The horn-shaped head gradually sinks into the paper surface, generating axial

  clamping force to secure the board without protruding from the surface.

• Load Distribution: The coarse teeth deeply grip the wooden joists, evenly distributing pressure to

  prevent loosening; the black coating reduces friction and improves installation efficiency.

• Installation Control: Use a screwdriver to control the depth, avoiding excessive tearing of the paper

  or insufficient stability; the principle involves material compression and friction interlocking.

Product Applications

• Interior Decoration: Fixing drywall to wooden joists, ceiling or partition construction; the black

  appearance reduces glare.

• Home DIY: Quick and reliable wall panel installation, cabinet fixing or repair.

• Commercial Buildings: Office or shop partitions, providing a smooth surface for easy finishing.

• Timber Structure Auxiliary: Combined with drywall systems with timber frames, ensuring stability.

• Professional Construction: For bulk drywall projects; the black coating is suitable for visible or precision

  environments.