Find HS Code and trade information for taper gauge

Taper Gauge

A taper gauge, also known as a feelers gauge set, is a precision tool used to measure small gaps or thicknesses, particularly those found in tapered openings. It consists of a set of thin, flexible blades of varying thicknesses, typically made of steel.

Material:

• Steel: The most common material, offering durability and precision. High-carbon steel is frequently used for its springiness and resistance to bending.
• Stainless Steel: Provides corrosion resistance, making it suitable for use in damp or corrosive environments.
• Plastic: Used for applications where scratching or marring surfaces is a concern, or where electrical conductivity is undesirable.

Purpose:

The primary purpose of a taper gauge is to determine the amount of wear or clearance in tapered joints, such as those found in:

• Bearings: Assessing bearing clearance is critical for proper function and preventing failure.
• Engine Components: Measuring piston-to-cylinder clearance, valve guide wear, and crankshaft journal clearances.
• Gears: Checking gear tooth clearances.
• Other Tapered Fits: Any application requiring precise measurement of a tapered space.

Function:

The gauge works by inserting blades of increasing thickness into the tapered opening until a blade fits snugly, but does not force the opening apart. The thickness of the last blade that fits indicates the gap size. The gauge relies on the principle of friction to provide a consistent reading.

Usage Scenarios:

• Automotive Repair: Engine rebuilds, bearing replacements, and general maintenance.
• Machining & Manufacturing: Quality control checks on tapered components.
• Aerospace: Precision measurement of engine and structural components.
• Tool & Die Making: Checking the accuracy of tapered cuts and fits.
• General Mechanical Maintenance: Any application requiring gap measurement in tapered spaces.

Common Types:

• Steel Feeler Gauge Sets: The most common type, available in various configurations (e.g., straight, tapered, hook).
• Tapered Feeler Gauge Sets: Specifically designed for tapered openings, with blades that are wider at one end than the other.
• Hook Feeler Gauge Sets: Have a bent end for reaching into recessed or difficult-to-access areas.
• Metric & Imperial Sets: Available in both metric and imperial units to suit different measurement systems.
• Radius Feeler Gauge Sets: Contain blades with a curved profile for measuring radius gaps.
• Wire Feeler Gauge Sets: Consist of a set of wires of varying diameters, useful for measuring small, irregular gaps.

Taper gauges are measuring instruments used for checking the taper angle of holes or shafts. They fall under the category of instruments for measuring length, used in the hand, and are not specified elsewhere.

Here are the relevant HS codes based on the provided reference material:

• 9017.30.80.00: This HS code covers Drawing, marking-out or mathematical calculating instruments; instruments for measuring length, for use in the hand; parts and accessories thereof: Micrometers, calipers and gauges: Other. This is the most applicable code as taper gauges are considered gauges used for measuring length in the hand.
  • 90: Chapter 90 covers Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof.
  • 17: Heading 9017 covers Drawing, marking-out or mathematical calculating instruments; instruments for measuring length, for use in the hand.
  • 30: Subheading 9017.30 covers Micrometers, calipers and gauges.
  • 80: Further specifies "Other" within the Micrometers, calipers and gauges category.

Regarding HS code 9017.30.80.00, please note the following:

• Tax Rate Details: The base tariff is 3.9%, with an additional tariff of 25.0%. After April 2, 2025, the additional tariff will increase to 30.0%.
• Total Tax Rate: The total tax rate is currently 58.9%.