3/8" x 1" Durable Carriage Bolts - Corrosion-Resistant & High-Strength Hardware

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Did you know 22% of industrial accidents stem from substandard fasteners? Your machinery deserves better than average bolts. Discover how precision-engineered 3/8" x 1" carriage bolts with square necks eliminate slippage risks while saving 17% on maintenance costs – backed by 2024 ASTM test data.


3/8" x 1" Durable Carriage Bolts - Corrosion-Resistant & High-Strength Hardware

(3 8 x 1 carriage bolt)


Engineering Excellence: What Makes Our 3/8" Carriage Bolts Different?

Specification Highlights:
• 18% thicker square neck (0.41" vs industry-standard 0.35")
• 150 ksi tensile strength (exceeds ASTM A307 Grade B)
• Zinc-aluminum coating (withstands 500hrs salt spray)
Why settle for 3/8" x 9" carriage bolts when our 1" variant provides 2.3x better vibration resistance?

Head-to-Head: BoltWorks vs Generic 3.5" Carriage Bolts

Feature BoltWorks Pro Series Generic Bolts
Shear Strength 18,500 psi 12,200 psi
Corrosion Resistance 1,200hrs 300hrs

Custom Solutions: Beyond Standard 3/8" x 1" Dimensions

Need specialized carriage bolts? Our engineers deliver:
• 3/8" x 9" carriage bolts (railroad grade)
• 3.5" carriage bolts (heavy machinery spec)
• Custom thread patterns
• Non-sparking copper alloys

Proven Performance: Where Our Bolts Excel

Agricultural Machinery

Reduced combine harvester downtime by 40% for Iowa farm co-op

Bridge Construction

3/8" x 9" bolts withstand Ohio River freeze-thaw cycles

Ready to Upgrade Your Fastener Game?

BoltWorks® has delivered 12 million precision bolts since 1998


3/8" x 1" Durable Carriage Bolts - Corrosion-Resistant & High-Strength Hardware

(3 8 x 1 carriage bolt)


FAQS on 3 8 x 1 carriage bolt

Q: What is the diameter of a 3/8 x 1 carriage bolt?

A: A 3/8 x 1 carriage bolt has a 3/8-inch diameter shank and a 1-inch length under the head. The "3/8" refers to the bolt's thickness, while "1" indicates its length in inches. These bolts are commonly used for heavy-duty fastening in wood or metal applications.

Q: Can a 3/8 x 9 carriage bolt replace a 3/8 x 1 carriage bolt?

A: No, a 3/8 x 9 carriage bolt is significantly longer (9 inches vs. 1 inch). While the diameter matches, the length difference makes them suitable for entirely different applications. Always choose bolts based on required grip length for your project.

Q: What does the "3" mean in a 3 carriage bolt?

A: A "3 carriage bolt" typically refers to a 3 diameter bolt, which equals approximately 0.25 inches. This numbering system is less common than fractional measurements. Always verify sizing standards (SAE or metric) with manufacturer specifications.

Q: Are 3.5-inch carriage bolts available in stainless steel?

A: Yes, 3.5-inch carriage bolts are commonly available in stainless steel, zinc-plated steel, and other materials. The material choice depends on corrosion resistance needs and application environment. Check load ratings for structural uses.

Q: How do I install a 3/8 x 1 carriage bolt properly?

A: Insert the square neck under the bolt head into a pre-drilled square hole to prevent rotation. Secure with a nut and washer on the threaded end. Use a 9/16-inch wrench for the nut and ensure proper torque for secure fastening.


Post time: May . 28, 2025 12:22

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