Find HS Code and trade information for arm

Arm

Definition

An arm is a limb of a human or other animal extending from the shoulder to the hand. It is one of the upper appendages used for a variety of functions including reaching, lifting, manipulating objects, and expressing emotions. The term can also refer to analogous structures in other animals. Beyond biological definitions, "arm" has specialized meanings in engineering and technology.

Biological Anatomy & Function

The human arm consists of several key components:

• Humerus: The long bone of the upper arm, extending from the shoulder to the elbow.
• Radius & Ulna: The two bones of the forearm, enabling rotation and flexibility.
• Elbow Joint: Connects the humerus to the radius and ulna, allowing for bending and straightening.
• Wrist: A complex joint connecting the forearm to the hand.
• Hand: Composed of the carpals (wrist bones), metacarpals (palm bones), and phalanges (finger bones).
• Muscles: Numerous muscles control arm movement, including the biceps, triceps, deltoids, and forearm flexors and extensors.
• Nerves & Blood Vessels: These structures supply the arm with sensation and circulation.

The primary functions of the arm include:

• Manipulation: Grasping, holding, and using tools.
• Locomotion: Assisting in climbing and balance.
• Communication: Gestures and expressions.
• Protection: Shielding the body.

Variations in Animals

Arm structures vary significantly across different animal species.

• Primates: Share a similar arm structure to humans, adapted for arboreal life and manipulation.
• Quadrupeds: Arms (forelimbs) are often adapted for weight-bearing and locomotion.
• Birds: Forelimbs are modified into wings for flight.
• Reptiles & Amphibians: Forelimbs can be adapted for walking, swimming, or climbing.
• Fish: Forelimbs are typically modified into fins for swimming.

Engineering and Technological Applications

The term "arm" is frequently used in several engineering contexts:

• Robotic Arms: Articulated mechanical arms used in industrial automation, surgery, and space exploration. These arms typically consist of multiple joints and actuators, controlled by computer programs.
• Processor Architecture (ARM architecture): A family of reduced instruction set computing (RISC) architectures for computer processors. ARM processors are widely used in mobile devices, embedded systems, and increasingly in laptops and servers due to their energy efficiency and performance. (Advanced RISC Machines).
• Hydraulic Arms: Used in construction equipment, excavators, and cranes for lifting and moving heavy objects.
• Welding Arms: Automated robotic systems for performing welding tasks.

Common Types (Robotic Arms)

• Articulated Arms: Most common type, with rotary joints allowing for a wide range of motion.
• SCARA Arms: Selective Compliance Assembly Robot Arm – designed for high-speed assembly tasks.
• Delta Arms: Parallel linkage robots, known for their speed and precision.
• Cartesian Arms: Linear joints providing precise movement along three axes.
• Collaborative Arms (Cobots): Designed to work safely alongside humans.

Based on the provided information, the term "arm" is broad and requires further specification for accurate classification. However, several HS codes potentially relate to different types of arms. Here's a breakdown of relevant codes based on the available data:

• 9301.10.00.10: This code covers Military weapons, other than revolvers, pistols and the arms of heading 9307: Artillery weapons (for example, guns, howitzers and mortars) Self propelled. This specifically refers to self-propelled artillery weapons.
• 9301.90.30.20: This code covers Military weapons, other than revolvers, pistols and the arms of heading 9307: Other: Rifles Rifles. This refers to rifles. The tariff rate includes a component based on the value of the rifle and the value of any telescope attached.
• 9304.00.20.00: This code covers Other arms (for example, spring, air or gas guns and pistols, truncheons), excluding those of heading 9307: Pistols, rifles and other guns which eject missiles by release of compressed air or gas, or by the release of a spring mechanism or rubber held under tension: Rifles. This covers rifles that operate using compressed air, gas, or spring mechanisms.
• 9304.00.40.00: This code covers Other arms (for example, spring, air or gas guns and pistols, truncheons), excluding those of heading 9307: Pistols, rifles and other guns which eject missiles by release of compressed air or gas, or by the release of a spring mechanism or rubber held under tension: Other. This is a broader category for other types of arms operating via compressed air, gas, or spring mechanisms.
• 9307.00.00.00: This code covers Swords, cutlasses, bayonets, lances and similar arms and parts thereof and scabbards and sheaths therefor. This specifically refers to swords, cutlasses, bayonets, and similar bladed weapons.

Important Considerations:

• The classification of "arms" heavily depends on the specific type, function, and mechanism.
• For HS code 9301.90.30.20, please note that the tariff rate is calculated based on both the value of the rifle and the value of any telescope attached.
• HS codes 9304.00.20.00 and 9304.00.40.00 relate to arms operating via compressed air, gas, or spring mechanisms. The distinction between these two codes depends on the specific type of arm.