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IMSCREWS 5/16-18 x 4 Carriage Bolts, 304 Stainless Steel (18-8), Full Thread Structural Fasteners for 4x4 Posts, Decks & Heavy Timber, 10 PCS
✅ In stock
⭐ Lowest price we've tracked
F
Grade
Analysis Confidence
73%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 17, 2026 10:13 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.
- 💰The current price sits right around what this item typically fetches.
- 🏷️The listed retail price is trimmed by 14% at checkout.
- 📉Our analysis places this at the most competitive price point we have ever tracked for this product — an exceptional moment to buy.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
1.41/28
Recent Value
0/22
Market Standing
2.22/20
Deal Strength
20/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
IMSCREWS
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓Extended 4-Inch Reach: Specifically engineered to fully penetrate standard 4x4 posts (3.5 actual thickness) or join thick multi-layer beams with space for washers and nuts.
✓Heavy-Duty 5/16 Diameter: The robust 5/16-inch shank offers superior shear resistance and load-bearing capacity compared to 1/4 bolts, essential for structural outdoor joints.
✓Premium 304 Stainless Steel: Forged from 18-8 (304) stainless steel for maximum rust protection in coastal air, humid gardens, and corrosive pressure-treated wood (ACQ).
✓Safety Round Head Design: The smooth, drive-free domed head eliminates sharp protrusions, providing a snag-free finish that is safe for play sets, benches, and deck railings.
✓Anti-Rotation Square Neck: The precision square shoulder locks firmly into wood fibers during installation, allowing for easy, one-sided tightening from the nut side.
⚙️ Specifications
Material
Stainless Steel
Thread Size
5/16"-18
Exterior Finish
Stainless Steel
Head Style
Round
Color
Silver
Fastener Type
Carriage Bolt
Brand
IMSCREWS
Thread Style
Right Hand
Size
5/16"-18 x 4"
Metal Type
Stainless Steel
Head Type
Round
