CAT50 Retention Knob for V-flange Spindles from China
High-torque retention knob (pull stud) for CAT50 V-flange tooling systems in vertical machining centers. Essential for drawbar clamping mechanism in CNC mills. Classified as 'other' tool holder accessory under HTS 8466.10.01.75.
Duty Rate — China → United States
38.9%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Import Tips
• Provide engineering drawings showing taper interface to distinguish from generic fasteners
• Thread pitch (e.g
• 7/16-20 UNF) variations affect interchangeability; document specific spindle compatibility
• Avoid classification as 'machine parts' by emphasizing principal function as tool retention