Circular Knitting Machine Sinkers
Sinkers are specialized metal components used in circular knitting machines (heading 8447) to hold and release yarn loops during stitch formation. They are precision-engineered for high-speed operations in producing seamless tubular fabrics like socks or hosiery. Classified under HTS 8448.51.5000 as 'other articles used in forming stitches' for knitting machinery.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used with flat knitting machines instead of circular
Parts for other knitting machines (not specifically sinkers/needles) fall under the broader 'other' parts subheading.
If sold as general industrial needles or hooks without machine specificity
Loses classification as dedicated knitting accessory, treated as generic knives/blades/parts.
If imported as part of a complete machinery set for textile finishing
Sets with machines of other headings (e.g., 8451) classify under parts of machines not solely for 8447.
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Import Tips & Compliance
• Verify compatibility with specific knitting machine models under heading 8447 to confirm principal use and avoid reclassification
• Require material composition certificates (e.g
• steel alloy specs) as sinkers must be solely for stitch formation, not general tools
Related Products under HTS 8448.51.50.00
Single Jersey Knitting Sinkers
Sinkers optimized for single jersey circular knitting machines producing smooth fabrics for T-shirts. Designed to prevent dropped stitches at high RPMs. Specifically 'other' under HTS 8448.51.5000 for 8447 machine stitch formation.
Rib Knitting Transfer Jacks
Transfer jacks used in ribbing attachments of knitting machines (8447) to move stitches between needle beds for 1x1 rib fabrics. Critical for collar and cuff production.
Computerized Flat Knitter Stitch Cams
Cams that control needle timing in computerized flat knitting for intarsia patterns. Direct stitch formation paths.
Seamless Garment Knitting Needle Jacks
Jacks that lift/select needles in seamless body garment knitters for 3D shaping.
High-Speed Sock Knitting Sinkers
Ultra-thin sinkers for 40+ RPM sock machines, minimizing fabric defects.
Lace Warp Knitting Guides
Eyelet guides for delicate lace warp knitting, preventing yarn breakage.