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5/16-18 x 3 300Pcs Flat Head Thread Cutting Self Drilling Deck Screws
✅ In stock
F
Grade
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Nov 3, 2026 10:08 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
FMhotu
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓[High-Strength & Durable Performance]Our 5/16-18 x 3" trailer deck screws feature a thread-cutting (Type 7) design that resists torque, shear, and tension, ensuring a secure hold under heavy loads. Made from hardened steel with black phosphate coating, they resist rust and corrosion for long-lasting use in trailers, flooring, and outdoor projects.
✓[Self-Tapping & Easy Installation]The blunt tapered point and multi-cutting edges allow these screws to drill smoothly into hardwoods and softwoods, saving time and effort. Ideal for trailer decking, flooring panels, and DIY projects requiring strong, split-free fastening.
✓[T30 Torx Drive for Maximum Torque]The star drive (T30) design prevents cam-out and stripping, enabling higher torque transfer for faster, more efficient installation. Perfect for high-intensity use by professionals and DIYers alike.
✓[Upgrade Reinforcing Ribs & Included Drill Bit]Increase torsional strength and prevent bit slippage.The flat countersunk head sits flush with the surface for a clean, professional look, while the included drill bit ensures precise pre-drilling when needed. Works seamlessly with wood and metal applications.
✓[Versatile & Reliable for Any Project]Designed for trailers, flooring, furniture, and machinery, these screws deliver heavy-duty performance in demanding conditions. Backed by [Your Brand]’s quality guarantee—trusted by contractors and DIY enthusiasts.
⚙️ Specifications
Head Style
Flat
Item dimensions L x W x H
1 x 1 x 1 inches
Exterior Finish
Black Phosphate
Thread Size
5/16
Point Style
Self-Drill Point
Item Dimensions
1 x 1 x 1 inches
Thread Coverage
Fully Threaded
Fastener Size
5/16-18 x 3"
Size Name
5/16-18 x 3"
Item Diameter
0.31 inches
Outside Diameter
0.31 inches
