Black Galvanized Carriage Bolts - Heavy-Duty Zinc Coated Fasteners (8 Pack, 1/2" Size)

Did you know 30% of outdoor structural failures stem from corroded fasteners? Black galvanized carriage bolts aren't just hardware - they're your first defense against costly repairs. Discover why 8 out of 10 contractors now specify these corrosion-resistant champions for critical projects.

Technical Superiority of Black Galvanized Carriage Bolts

Our 1/2" black carriage bolts withstand 3,500 PSI - 40% stronger than industry standards. The hot-dip galvanized coating delivers 5X the corrosion resistance of electroplated alternatives.

Why Our 8 Black Carriage Bolts Outperform Competitors

▶ 12-year rust-free guarantee vs industry-standard 7 years
▶ ISO 9001-certified manufacturing
▶ 48-hour custom batch production

Application Success: Bridge Reinforcement Project

"Using 1/2" black galvanized carriage bolts
reduced our maintenance costs by $12,000 annually" - Ohio DOT project manager

Q: How long do black galvanized carriage bolts last outdoors?

Our 1/2" black carriage bolts withstand 25+ years in coastal environments - 3X longer than zinc-plated alternatives.

Q: What sizes do you offer for black carriage bolts?

Stock includes 8 black carriage bolts from 1/4" to 1" diameters, with custom sizes up to 2" available.