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IMSCREWS 5/16-18 x 3 Carriage Bolts, 304 Stainless Steel 18-8, Round Head & Square Neck, Full Thread, Pack of 10
✅ In stock
F
Grade
Analysis Confidence
73%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 18, 2026 5:21 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 is slightly above the going rate for this product — worth watching for a drop.
- 🏷️The retail sticker price has been slashed by 55% — a steep markdown from the official listing.
- 📉Better-priced windows have occurred before, though not frequently — today's price is reasonably competitive.
- 📈Prices have been moving higher lately — waiting risks paying more if that momentum continues.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
2.4/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
IMSCREWS
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓Self-Locking Square Neck: Features a precision-engineered square neck beneath the head that bites into wood, preventing the bolt from spinning while the nut is tightened for easy, one-sided installation.
✓Full Thread Maximum Grip: The fully threaded 3-inch shank provides maximum grip and enhanced fastening power along its entire length, making it ideal for deep timber and structural projects.
✓304 Marine Grade Stainless: Forged from premium 18-8 (304) Stainless Steel for superior corrosion defense. Essential for docks, coastal decks, and ACQ pressure-treated lumber.
✓Heavy-Duty Structural Strength: The 5/16 diameter delivers professional-grade shear resistance. At 3 long, these bolts are Well-suited for through-bolting thick posts and heavy framing.
✓Snag-Free Aesthetic Finish: The smooth, domed round head provides a professional finish without sharp edges, ensuring safety for playground equipment, fencing, and furniture.
⚙️ 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 3"
Metal Type
Stainless Steel
Head Type
Round
