Gyproc Drywall Screw 3.5 x 50 mm - Board to Metal (Pack of 500)

Name: Gyproc Drywall Screw 3.5 x 50 mm - Board to Metal (Pack of 500)
Brand: HomeRun
SKU: 7MDT2
Price: 789.0 INR
Availability: InStock

₹1,658

₹789

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Brand : Saint-Gobain Gyproc
Product: Drywall Screw, Board-to-Metal
Thread Diameter: 3.5 mm (No. 6 Gauge)
Total Length: 50 mm (2 Inches)
Head Style: Bugle Head / Countersunk Phillips No. 2
Surface Treatment: Black / Gray Phosphated Coated (Anti-Rust)
Compatible Frame Thickness: Steel framing channels up to 0.70 mm thick

Saint-Gobain Gyproc 3.5 x 50 mm Drywall Screw is a professional-grade, high-tensile fastener for heavy-duty drywall partitions and false ceiling assemblies. This extended 50 mm length is designed for secure board-to-metal fixing, anchoring multi-layer plasterboard, acoustic sheets, or thick high-density boards directly onto steel framing.

Key Features

Bugle Head Profile: Countersinks flush with the board surface without tearing the face paper
Self-Tapping Fine Thread: Cuts into light-gauge steel studs up to 0.70 mm thick without pre-drilling
Corrosion-Resistant Finish: Phosphate coating prevents rust bleed-through under paint or jointing compound
Double-Layer Optimized: The 50 mm shaft gives enough bite for double-layer 12.5 mm acoustic or fireproof board setups

Technical Specifications

Specification	Details
Screw Fastener Type	Drywall Board-to-Metal Screw
Thread Diameter	3.5 mm (No. 6 Gauge)
Total Length	50 mm (2 Inches)
Head Style	Bugle Head / Countersunk Phillips No. 2
Surface Treatment	Black / Gray Phosphated Coated (Anti-Rust)
Compatible Frame Thickness	Steel framing channels up to 0.70 mm thick

Professional Recommendations

Double-Layer Drywalls: Use this 50 mm size for two layers of 12.5 mm or 15 mm boards on a steel grid, so the screw penetrates at least 10 mm past the second board into the channel
Single-Layer Systems: For a single 12.5 mm board, use the shorter 25 mm variant instead to avoid over-penetration
Spacing: Space screws at max 300 mm apart on the field and 200 mm apart at edges, staying 10–15 mm from cut edges to avoid cracking

Why Buy from HomeRun?

Authentic Saint-Gobain Gyproc Product: Verified genuine product sourced from authorized channels
60-Minute Bangalore Delivery: Express delivery to active service zones for urgent site needs
Project-Friendly Availability: Small packs for touch-ups or bulk quantities for full partition and ceiling jobs

1) Why do I need a 50 mm screw when gypsum boards are only 12.5 mm thick?

Standard 25 mm screws only secure a single layer of plasterboard. The 50 mm length is sized to pass through a double layer of boards while still tapping cleanly into the steel channel underneath.

2) Can I use these screws to attach plasterboard to wooden rafters?

No. These are fine-thread screws optimized for cold-rolled steel and metal grid channels. For wooden framing, use Gyproc's coarse-thread drywall screws instead.

3) Will the screw heads rust under wet jointing compound?

No. The phosphate surface coating prevents rust reactions when covered by wet jointing paste, wall putty, or water-based primers.

4) Do these screws require pre-drilling into steel framing channels?

No. The self-tapping point pierces standard GI channels up to 0.70 mm thick with just a power drill driver.

5) How far apart should these screws be spaced?

Space them at a maximum of 300 mm apart along the board field and 200 mm apart along the edges, keeping 10–15 mm clearance from cut edges to avoid cracking.

Return within 24 hours of delivery for:
- Damaged or defective product
- Wrong or missing item
Product cannot be returned once installed or used
Refer to Refund Policy for complete details

gyproc drywall screw 3.5x50mm board to metal screw bugle head phosphate coated bangalore false ceiling screw