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Wholesale Black Phosphate Self Tapping Screws Drywall Screws
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Wholesale Black Phosphate Self Tapping Screws Drywall Screws

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Drywall screws are screws specifically designed to fix gypsum boards (drywall/wall panels) and are widely used in fields such as building decoration, partition walls, and ceilings. Its design features enable it to efficiently fix gypsum boards to metal or wooden frames while reducing the risk of board cracking.
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Product Parameters


1. Main types

(1) According to the shape of the head

Bugle Head: The most common, flat head design that can sink into the surface of gypsum board, making it easy to cover with subsequent batches of plaster.

Pan Head: Less commonly used, usually used in situations that require additional support.

(2) By thread type

Coarse Thread: Suitable for Wood Studs, with stronger grip.

Fine Thread: Suitable for metal frames (Metal Studs) to prevent wire slippage.

(3) According to surface treatment

Black Phosphate: rust proof, suitable for indoor use.

Galvanized: corrosion-resistant, suitable for humid environments.

2、Drywall Screws – Product Parameters

ParameterOptions / SpecificationsRemarks
MaterialCarbon steel, Stainless steel (rare)Most are carbon steel with coating for rust resistance.
Surface TreatmentBlack phosphate, Zinc-plated, GalvanizedBlack phosphate for indoor use; galvanized for moisture-prone areas.
Head TypeBugle head (most common), Pan headBugle head prevents paper tearing on drywall.
Drive TypePhillips (#2), Pozidriv, Square (Robertson)Phillips is the most widely used.
Thread TypeCoarse (for wood), Fine (for metal studs)Coarse: Better grip in wood; Fine: Less likely to strip metal.
Point TypeSharp self-drilling pointNo pre-drilling needed for wood/metal studs.
Shank TypePartially threaded (common), Fully threadedPartial threading reduces cracking risk.
Diameter (Gauge)#6 (3.5mm), #8 (4.2mm)#6 for standard drywall; #8 for heavy-duty.
Length1" (25mm), 1-1/4" (32mm), 1-5/8" (41mm), 2" (50mm)Longer screws for thicker materials.
PackagingBulk boxes (1lb, 5lb, 25lb), Pre-counted (100/200/500 pcs)Contractors prefer bulk packagin


3、Key Considerations When Choosing Parameters:

  1. For Wood Studs → Coarse thread (#6 or #8) + 1-1/4" to 1-5/8" length.

  2. For Metal Studs → Fine thread (#6) + 1" to 1-1/4" length.

  3. High Humidity Areas → Zinc-plated or galvanized screws.

  4. Fire-Rated Walls → Check local codes (sometimes longer screws are required).


Product Advantage

1、Comparison vs. Drywall Nails

FeatureDrywall ScrewsDrywall Nails
Holding Power✔️ Superior (threaded grip)❌ Smooth, may loosen
Cracking Risk✔️ Low (bugle head)❌ Higher (hammering stress)
Installation Speed✔️ Fast (power driver)✔️ Fast (nail gun)
Corrosion Resistance✔️ Better (coatings available)❌ Prone to rust
Reusability❌ Hard to remove✔️ Easier to pull out

2、Drywall Screws – Product Advantages

Drywall Installation:

The primary use of drywall screws is to attach drywall panels to wooden or metal studs of interior walls and ceilings in residential and commercial construction, ensuring a secure and tight connection to create a smooth surface.

Corner Bead Attachment:

Drywall corner beads are used to create straight and clean corners, and drywall screws are often used to attach them to the drywall surface.

Patching and Repairs:

When repairing or patching holes in existing drywall, drywall screws can be used to secure new drywall pieces to the damaged area or to support joint compound and tape.

Subfloor Installation:

In some smaller construction projects where specialized subfloor screws are not available, drywall screws can be used to secure subflooring materials to floor joists.

Interior Trim and Molding Installation:

Although not the first choice, drywall screws can be used to secure interior trim and molding. However, finish nails or trim screws are usually preferred for a more aesthetically pleasing result.

Other Framing and Construction:

Drywall screws are sometimes used in other framing and construction applications where wood or metal materials need to be fastened together.



Product Applications

1、Recommended Screw Types by Application

ApplicationRecommended Drywall Screw Type
Standard Drywall (Wood Studs)#6 Coarse Thread, 1-1/4" to 1-5/8", Black Phosphate
Metal Stud Partitions#6 Fine Thread, 1" to 1-1/4", Zinc-Plated
Bathroom/Kitchen (Moisture)#6 or #8, Galvanized/Zinc-Coated
Fire-Rated Walls (Double Layer)#8 Coarse Thread, 2", Black Phosphate
Ceiling Drywall (Joists)#6 Coarse Thread, 1-5/8"

2、Why Drywall Screws Are Preferred in These Applications?

✔ Stronger than nails – No "pop-out" issues due to thermal expansion.
✔ Faster installation – Works with electric screw guns for quick mounting.
✔ Adaptable – Suitable for wood, metal, and hybrid structures.
✔ Cost-effective – Bulk purchasing reduces project costs.


FAQ

1、What’s the difference between coarse-thread and fine-thread drywall screws?

  • Coarse thread → Best for wood studs (better grip).

  • Fine thread → Designed for metal studs (reduces stripping).

2、What length of drywall screw should I use?

  • Single-layer drywall → 1-1/4" (32mm)

  • Double-layer drywall → 1-5/8" to 2" (41mm–50mm)

  • Metal studs → 1" to 1-1/4" (25mm–32mm)

3、Can I use drywall screws for wood or outdoor projects?

  • Indoor wood projects? → Yes, but coarse-thread is better.

  • Outdoor use? → No—they’re not corrosion-resistant enough. Use deck screws instead.

4、Can I reuse drywall screws?

Not recommended—they can strip easily when removed and lose holding power.


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