Find HS Code and trade information for cylindrical pin

Cylindrical Pin

A cylindrical pin is a type of fastener characterized by its cylindrical shape. It is used to accurately locate and join two or more parts, often relying on interference fit for a secure connection.

Material

Cylindrical pins are commonly manufactured from:

• Steel: Alloy steels (such as alloy steel 4140) are frequently used for high-strength applications. Carbon steel is a more economical option for less demanding uses.
• Stainless Steel: Offers corrosion resistance, suitable for outdoor or wet environments. 304 and 316 stainless steel are common choices.
• Brass: Provides corrosion resistance and is often used in electrical applications.
• Bronze: Offers good corrosion resistance and wear properties.
• Plastic: Used in low-load applications where corrosion resistance or electrical insulation is required.

Purpose

The primary purposes of cylindrical pins include:

• Alignment: Precisely locate parts relative to each other.
• Joining: Securely fasten components, often in shear.
• Pivot Points: Act as a low-friction pivot for rotating parts.
• Anti-Rotation: Prevent relative rotation between parts.

Function

Cylindrical pins function by:

• Interference Fit: The pin is slightly larger in diameter than the hole it is inserted into. Pressing the pin into the hole creates a tight friction fit, preventing movement.
• Shear Strength: The pin resists shear forces, holding the joined components together.
• Locational Accuracy: The pin's precise dimensions ensure accurate positioning of the connected parts.

Usage Scenarios

Common applications include:

• Machinery: Securing levers, gears, and other components in industrial equipment.
• Automotive: Connecting suspension parts, brake components, and steering mechanisms.
• Aerospace: Used in control surfaces, landing gear, and engine components.
• Electronics: Used as electrical contacts or to secure components in electronic devices.
• Hydraulics & Pneumatics: Securing valve components and cylinders.

Common Types

• Solid Cylindrical Pins: The most basic type, offering high strength.
• Spring Pins: Have a helical spring section, providing self-locking action and easier installation/removal. They are not as strong as solid pins.
• Dowel Pins: Used primarily for alignment, often with a looser fit than solid pins. They are typically made from softer materials.
• Clevis Pins: Have a bifurcated head and are often used with a cotter pin to prevent removal.
• Cotter Pins: Used to secure clevis pins or other fasteners, preventing them from loosening.
• Grooved Pins: Have grooves around the circumference to provide a tighter fit and prevent rotation.
• Tapered Pins: Have a tapered shape for self-locking action and increased strength.
• Shouldered Pins: Feature a shoulder for accurate positioning and increased stability.

Cylindrical pins are typically used as fasteners, alignment guides, or pivots in mechanical assemblies. They are commonly made of iron or steel. Based on these characteristics, the following HS codes are relevant:

• 7317006530: Nails, tacks, drawing pins, corrugated nails, staples (other than those of heading 8305) and similar articles, of iron or steel, whether or not with heads of other material, but excluding such articles with heads of copper: Other: Of one piece construction: Other Cut. This code covers iron or steel articles similar to pins, specifically those of one-piece construction and cut to length. The basic customs tariff is 0.0%, with a composite tariff of 80.0% including additional tariffs and those applicable to steel products.
• 7317007500: Nails, tacks, drawing pins, corrugated nails, staples (other than those of heading 8305) and similar articles, of iron or steel, whether or not with heads of other material, but excluding such articles with heads of copper: Other: Of two or more pieces. This code applies to iron or steel articles similar to pins, constructed from two or more pieces. The basic customs tariff is 0.0%, with a composite tariff of 80.0% including additional tariffs and those applicable to steel products.
• 7318290000: Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: Non-threaded articles: Other. This code includes non-threaded articles similar to pins, made of iron or steel. The basic customs tariff is 2.8%, with a composite tariff of 82.8% including additional tariffs and those applicable to steel products.

Regarding HS code 7317006530 and 7317007500, please note that these codes are for articles of iron or steel. If the cylindrical pin is made of materials other than iron or steel, these codes may not be applicable. Additionally, regarding HS code 7318290000, please note the need to verify that the article is indeed non-threaded.