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Prime-Line 9063058 Carriage Bolts, 5/16 in.-18 X 3 in., A307 Grade A Zinc Plated Steel (50 Pack)
✅ In stock
C
Grade
Analysis Confidence
100%
Price verified Sep 24, 2026 7:46 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
🙂 Fair Price- 🙂Verdict: Fair Price. Small discount vs history. Consider waiting for a better drop.
- 💰At 15% off its standard going rate, this offer delivers clear value for the money.
- 🏷️A 18% cut from the official retail price adds further appeal.
- 📉Going back roughly eight months, a more competitive price has not appeared — this stands out as a strong value by recent standards.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
17.27/28
Recent Value
0/22
Market Standing
13.74/20
Deal Strength
13/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
Amazon.com
🚚 Shipping
Free Shipping
Product Details
✓Size: 5/16 inch-18 X 3 inch
✓Features a smooth rounded head as opposed to a standard hex head
✓Square shoulder allows for nut to be tightened or loosened
✓Often used in cases where a protruding bolt head could cause injury
✓Nuts and washers not included, ensure washers and nuts are same diameter
⚙️ Specifications
Material
Alloy Steel
Thread Size
5/16"-18
Exterior Finish
Zinc
Manufacturer Grade
Grade A
Head Style
Domed
Color
Zinc
Fastener Type
Carriage Bolt
Brand
PRIME-LINE
Thread Type
Unc
Item Diameter
0.31 inches
Thread Style
Right Hand
