3/8 Inch Variable Helix End Mill 45 Degree
3/8 inch end mill featuring variable helix angles at 45 degrees, made with M42 cobalt high-speed steel containing vanadium over 0.1% and chromium. Reduces chatter during slotting operations in mold making. HTS 8207.70.3030 due to alloy content and end mill configuration.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If shorter length under 2 inches
Statistical suffixes distinguish short vs long end mills for reporting.
If imported without cutting edges (blanks)
Tool bodies without cutting parts classify as other base metal parts.
If marketed for manual power drill use
Hand tool milling cutters separate from machine tool interchangeables.
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Import Tips & Compliance
• Chemical composition certificate from manufacturer prevents reclassification disputes
• Avoid describing as 'drill bit' - specific milling geometry determines heading
• Bulk shipments require piece count verification matching commercial invoice
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