High-Strength Galvanized Carriage Bolts 3/8" x 5-1/2" - Rustproof

Imagine this: Your perfect outdoor project ruined by rust streaks. Metal fittings failing mid-storm. Maintenance costs doubling every winter. The culprit? Substandard fasteners. Ordinary bolts corrode 200% faster in coastal and high-moisture environments. Don't gamble with structural integrity!

(3 8 x 5 1 2 galvanized carriage bolts)

Technical Superiority of Galvanized Carriage Bolts

Manufacturer Comparison: Why We Win

Specification	Our 3/8" Bolts	Competitor A	Competitor B
Zinc Coating Thickness	3.9 mils	2.1 mils	1.8 mils
Salt Spray Resistance	500+ hours	210 hours	180 hours
Price (per 100 units)	$28.50	$21.75	$19.90
Warranty Period	Lifetime	5 years	2 years

Notice the difference? Superior protection costs just pennies more per bolt. Save thousands in replacements!

Custom Solutions for Every Need

Need specialized dimensions? We stock all industry standards:

• 3/8 x 3.5 galvanized carriage bolts - Ideal for deck railings
• 3/8 x 5.5 galvanized carriage bolts - Perfect for structural timber
• 3/8 x 12 galvanized carriage bolts - Heavy-duty equipment solution

Can't find your size? Our custom manufacturing produces any dimension in 72 hours. Special heads? Unique threading? Just ask!

Real-World Success Stories

(3 8 x 5 1 2 galvanized carriage bolts)

FAQS on 3 8 x 5 1 2 galvanized carriage bolts

FAQ: Galvanized Carriage Bolts Specifications

Q: What does the size "3/8 x 5-1/2" mean for galvanized carriage bolts?

A: "3/8" refers to the bolt diameter in inches. "5-1/2" indicates the shank length is 5.5 inches. This size offers corrosion resistance for outdoor decking or fencing projects.

Q: Are 3/8 x 3.5 galvanized carriage bolts suitable for marine applications?

A: Yes, the hot-dip galvanized coating provides excellent rust protection. Their 3.5-inch length works well for attaching hardware on boats/docks. Saltwater exposure requires regular maintenance checks.

Q: Can I use 3/8 inch galvanized carriage bolts for pressure-treated wood?

A: Absolutely. The galvanized coating prevents chemical reactions with preservatives in treated lumber. These bolts are ideal for structural joints in pergolas or retaining walls.

Q: What's the shear strength of 3/8 x 12 galvanized carriage bolts?

A: Typically 4,500-6,000 PSI depending on grade. The 12-inch length accommodates heavy timber construction like beams. Always verify load requirements against manufacturer specifications.

Q: Do these carriage bolts need washers?

A: Recommended to prevent pull-through in softwoods. Galvanized washers distribute pressure on square necks. Use 3/8" washers matching the bolt diameter for optimal performance.