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SITCSection 7
U.S. imports of work holders for machine tools (SITC 73513) totaled $36.1M in April 2026, traded with 42 countries.
Importers of Work Holders for Machine Tools paid $4.2M in duties in April 2026 — an effective duty rate of 13% on $31.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Work Holders for Machine Tools imports of $36.1M in April 2026 ran 13% above the year-to-date monthly average of $31.9M.
Last updated: April 2026 dataWork holders — including chucks, collets, vises, fixtures, and magnetic chucks — secure workpieces during machining and are critical determinants of part accuracy and repeatability on lathes, mills, and grinding machines. Unlike tool holders, which grip the cutting tool, work holders grip the part being machined, and the distinction matters for correct classification. Precision work-holding equipment is a high-value segment of the machine-tool accessories market, with demand driven by aerospace, medical-device, and automotive precision-machining operations.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Work holders (73513) grip the workpiece being machined — examples include lathe chucks, collets, vises, and magnetic chucks. Tool holders (73511) grip the cutting tool. The distinction is functional: if the item holds the part, it is a work holder; if it holds the cutter, it is a tool holder. Misclassifying between these two headings is a common error on entry documents for machine-tool accessories.
Work holders sourced from certain countries — particularly China — may be subject to Section 301 tariffs. Antidumping orders have historically covered some categories of precision chucks and vises. Importers should check current CBP and USTR guidance for the applicable HTS subheading and country of origin before finalizing sourcing decisions.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| GERMANY | $13.4M | $1.7M | -$11.8M |
| CANADA | $3.4M | $4.4M | +$1.1M |
| JAPAN | $5.9M | $832K | -$5.1M |
| COSTA RICA | $5K | $3.9M | +$3.9M |
| MEXICO | $23K | $3.6M | +$3.6M |
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Monthly import values over time