18 Different Types of Bolts

Bolts play a vital role in both manufacturing and construction industries. They are essential for assembling complex machinery like automobiles, bridges, and buildings due to their robust structure. These mechanical fasteners are indispensable for ensuring the integrity of assembled components.

Bolts function as external fasteners designed to pass through aligned holes in connected parts. Typically, they are tightened or loosened by turning a nut. Despite their varied shapes, most bolts share common characteristics, including a threaded cylindrical rod and a head at one end, often accompanied by a nut at the opposite end.

Sizes of All Types of Bolts

Hex Bolts Are Recognized by Their Six-Sided Hexagonal Heads

Hex bolts, also referred to as hex head bolts or hexagonal bolts, are named for their unique head shape.

These bolts are a type of threaded fastener that can be either fully or partially threaded. They are versatile and suitable for a wide range of applications, including construction and machinery.

Their adaptability makes them ideal for various industrial applications. Hex bolts come in numerous sizes, materials, and finishes, providing users with the flexibility to select the best option for their specific application needs.

Specifications of Hex Bolts

• Metric Size: Diameter M5 – M56
• Lengths: 10mm – 800mm
• Imperial Size: Diameter 1/4" – 2" & Lengths 1/2" – 9-1/2"
• Threads: UNC, UNF, SAE, BSW
• Finishes: Zinc Yellow, Hot Dip Galvanized, Plain, Zinc Plated, Mechanical Galvanized, Stainless Steel
• Surface Treatment: Passivation, Plain

Tolerances of Stainless Steel Hex Bolts

Head Types of High Tensile Bolts

Flange Bolts Are Available for Class 150 to 1500 Flanges

Flange bolts are versatile fasteners widely used across multiple industries. Their distinct design allows for better weight distribution, making them ideal for applications requiring secure fastening.

They can be utilized for class 150 to 1500 flanges, particularly where resistance to high temperatures is necessary. Ensuring safety, efficiency, and reliability of products is essential, and the following chart provides guidance on which class would suit your application needs.

Flange Bolting Chart

Benefits of SS Flange Bolts

• Load Distribution
• Increased Load-Bearing Capacity
• Simplified Assembly
• Cost-Effective
• Reduced Loosening
• Enhanced Aesthetics

Eye Bolts Are Primarily Used for Light-Duty Applications

Eye bolts are mainly used for light-duty applications since heavy loads can cause the eye to deform or even break. These bolts consist of a simple structure, featuring a threaded shaft and an eye at one end, typically secured with a nut. They are inserted into structures like wood or steel supports to provide a stable attachment point for ropes or cables during lifting operations.

Components of an Eye Bolt

Various Types of Eye Bolts & Applications

Refer T-head Bolts Standard and Threads

T-Head Bolts, also known as Hammer-Head Bolts, feature a distinctive "T" shaped head that facilitates easy insertion into slots while preventing rotation during installation. Adhering to specific standards ensures these bolts meet desired dimensions, strength, and features to handle intended weights and pressures effectively, minimizing the risk of failures and costly repairs.

Dimensional Standards of T-Head Bolts

Tolerance Standards for Concrete of T-Head Bolts

J Anchor Bolts Are Widely Used to Secure Walls to Concrete

J Anchor Bolts are available in a variety of sizes, finishes, and materials to cater to diverse requirements. They serve as excellent fasteners for anchoring structural components to concrete, commonly used in manufacturing and durable applications. Installation is relatively straightforward compared to other anchoring methods, and they can be easily removed and replaced without significantly affecting neighboring materials, allowing for modifications within the application.

Types of J Bolts

• Standard J Bolt
• Heavy-Duty J Bolt
• L-Shaped J Bolt
• Corrosion-Resistant J Bolt
• Anchor J Bolt
• Threaded J Bolt
• Lag J Bolt
• Metric J Bolt
• Custom J Bolt

Uses of J Anchor Bolts

Hex Head Anchor Bolt Interior Uses