6004.90.20 - Containing elastomeric yarn and rubber thread

This HTS category, 6004.90.20, specifically classifies knitted or crocheted fabrics that incorporate elastomeric yarn or rubber thread, representing 5% or more of the fabric's weight. These fabrics are distinguished from those in heading 6001. The "Other" designation within this subdivision signifies that the fabric is not of the warp-knit construction.

Within the broader context of knitted or crocheted fabrics containing elastomeric yarn or rubber thread (heading 6004), this category acts as a broad grouping. It encompasses fabrics that meet the primary criteria of containing these stretch components but do not fall under more specific sub-classifications. The key differentiator at this level is the absence of a warp-knit structure, which would be classified elsewhere.

The subcategories under 6004.90.20 provide further refinement for classification. The existence of a "Warp knit" subcategory indicates that certain warp-knitted fabrics with elastomeric yarn or rubber thread are handled separately. The subsequent "Other" subcategory (6004.90.20.85) then captures remaining knitted or crocheted fabrics that contain elastomeric yarn or rubber thread and are not warp-knitted, ensuring a granular and accurate tariff classification based on the fabric's construction and composition.