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1/2" x 9" (25 Pack) Galvanized Carriage Bolt Kit Grade 307A Includes 1/2" USS Flat Washers (25 pcs) and 1/2"-13 Hex Nuts (25 pcs), Hot Dip Galvanized for Exterior Use by Makers Bolt
✅ In stock
F
Grade
Analysis Confidence
90%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 23, 2026 3:28 AM · 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.
- 📉This is the most affordable price seen in roughly three months — a solid near-term opportunity.
- ➡️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
7/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
Makers Bolt
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓Diameter: 1/2" | Length: 9" | Head diameter: 1.062" | Nut diameter: 1/2" | Nut wrench size: 3/4" | Washer outside diameter: 1-3/8"
✓Kit includes 25 Grade 307A carriage bolts, 25 USS thick washers, 25 Grade 2/A hex nuts
✓Hot dip galvanized coating for superior corrosion resistance, Suitable for use in ACQ treaded lumber
✓The flat head provides a semi-flush finish and is perfect for decks, gazebos, pergolas, and other heavy duty applications
✓Meets or Exceeds: ASME B18.5, ASTM A307, ASME B18.2.2, ASTM A563, ASME B18.21.1, ASTM F2329
⚙️ Specifications
Material
Alloy Steel
Thread Size
1/2"-13
Exterior Finish
Hot-Dipped Galvanized
Manufacturer Grade
Grade 307A
Head Style
Flat
Fastener Type
Carriage Bolt
Brand
MAKERS BOLT
Thread Type
Right Hand
Item Diameter
0.5 inches
Thread Style
Right Hand
Item Hardness
Grade 2
