Woven Fabrics of Silk or Silk Waste, Not Elsewhere Specified

The threshold is 85% by weight of silk or silk waste (excluding noil). If lab analysis or the manufacturer's fiber content declaration confirms the fabric meets or exceeds that level and is not made from noil silk, it belongs under 500720. If it falls below 85%, or if the fiber content is uncertain, 500790 is the residual heading — but the specific 10-digit line still depends on the chief other fiber and any applicable textile restraint category.

Lines 5007906010 and 5007906020 apply to fabrics subject to cotton and man-made fiber restraints, distinguished by whether the yarns are of different colors; 5007906030 covers fabrics subject to wool restraints; and 5007906090 is the catch-all for fabrics not subject to any of those restraints. Importers must identify the chief non-silk fiber by weight and check whether any applicable textile category restraint applies to correctly assign the 10-digit line.