Marine Grade 316 Stainless Steel R4 Self Tapping Countersinking Deck Fasteners By GRK Three And One Eighth Inch Length Size Ten PHEINOX W Cut Thread Handy Pack With Seventy Fasteners For Wood Decking Particle Board Cement Fiberboard

Marine-Grade 316 SS R4 Self-Tapping Deck Fasteners 3-1/8in
✔️ 316 SS marine grade, self-tapping, countersink, W-cut thread, 70-pack

These deck fasteners are built for outdoor and coastal installations. Designed for wood decks and compatible substrates like particle board, cement fiberboard, sheet metal, and melamine, they deliver durable performance even in harsh seaside environments. The Handy Pak keeps 70 fasteners ready for quick projects.

✅ Size #10, 3-1/8 in length, R4 thread
✅ Self-tapping countersink head, W-cut thread design
✅ 316 stainless steel marine grade for saltwater exposure
✅ Suitable for wood decking, particle board, cement fiberboard, plastic, melamine, sheet metal
✅ Handy Pak with 70 fasteners for quick project stock

💡 What is the best way to choose deck fasteners for outdoor use?

Choosing deck fasteners for outdoor use hinges on corrosion resistance, substrate compatibility, and ease of installation.

• Corrosion resistance: 316 stainless steel resists salt spray and humidity
• Thread design: R4 self-tapping with W-cut for solid grip
• Head style: countersinking head yields a flush finish on decks
• Pack size: Handy Pak of 70 keeps you ready on site