A Comprehensive Guide to Bolt Types and Their Applications

Introduction

Bolts are among the most essential fasteners in construction, manufacturing, automotive, and countless other industries. Choosing the right bolt type ensures structural integrity, safety, and performance. This guide explores common bolt classifications, their applications, and how Panda Fastener provides high-quality solutions for your fastener needs.

1. Common Bolt Types and Their Uses

(1) Hex Bolts (Hex Head Bolts)

• Description: Recognizable by their six-sided head, hex bolts are widely used due to their strong grip and ease of installation with a wrench.

• Materials: Carbon steel, stainless steel, alloy steel.

• Applications:

• Structural steel connections

• Machinery assembly

• Automotive and construction industries

(2) Carriage Bolts (Coach Bolts)

• Description: Feature a smooth, dome-shaped head and a square neck to prevent rotation during tightening.

• Materials: Typically galvanized or stainless steel.

• Applications:

• Wood-to-wood fastening (e.g., furniture, decks)

• Agricultural equipment

• Railroad and truck trailers

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(3) Lag Bolts (Lag Screws)

• Description: Heavy-duty screws with a hexagonal head and coarse threading for strong holding power.

• Materials: Carbon steel, often zinc-plated for corrosion resistance.

• Applications:

• Wood framing and timber construction

• Utility poles and fencing

• Heavy-load anchoring

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(4) Eye Bolts

• Description: Feature a circular loop at one end for attaching cables, ropes, or chains.

• Materials: Forged steel, stainless steel.

• Applications:

• Rigging and lifting equipment

• Marine and industrial hoisting

• Theatrical and stage setups

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(5) U-Bolts

• Description: Shaped like a "U" with threaded arms for securing pipes, tubes, or round objects.

• Materials: Hot-dip galvanized steel, stainless steel.

• Applications:

• Exhaust pipe mounting in vehicles

• Plumbing and HVAC installations

• Structural supports in construction

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(6) Flange Bolts

• Description: Have a built-in washer-like flange under the head to distribute load and prevent loosening.

• Materials: Grade 5 or Grade 8 steel, stainless steel.

• Applications:

• Automotive assemblies (e.g., engines, transmissions)

• Metal framing and machinery

• High-vibration environments

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(7) Anchor Bolts

• Description: Designed to embed into concrete or masonry for structural stability.

• Materials: Carbon steel, often hot-dip galvanized.

• Applications:

• Building foundations

• Bridge and highway construction

• Heavy equipment anchoring

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2. Choosing the Right Bolt for Your Project

Selecting the correct bolt depends on:

✔ Material (corrosion resistance, strength)
✔ Thread Type (coarse for wood, fine for metal)
✔ Load Requirements (shear strength, tension)
✔ Environmental Conditions (outdoor, marine, high-temperature)

3. Why Choose Panda Fastener?

At Panda Fastener, we specialize in supplying high-quality bolts and fasteners for various industries, including:

✅ Construction & Infrastructure – Anchor bolts, structural bolts
✅ Automotive & Machinery – Flange bolts, U-bolts
✅ Marine & Energy – Corrosion-resistant stainless steel fasteners
✅ Custom Solutions – OEM & special threading available

Our Advantages:

✔ Wide Range of Materials (carbon steel, stainless steel, alloy steel)
✔ Competitive Pricing & Bulk Discounts
✔ Fast Global Shipping & Reliable Supply Chain
✔ Technical Support & Quality Assurance

Contact Us Today!

Looking for durable, precision-engineered bolts? Send us your inquiry now!
Email: admin@pandafastener.com
Website: www.pandafastener.com
Tel: +8618132216205

Let Panda Fastener be your trusted fastener supplier—strong connections start with us!