Stainless Steel Watch Case Back
A screw-down stainless steel back cover for wristwatches, featuring engraved serial numbers and water resistance seals. Classified under HTS 9111.90.70.00 as 'other' parts of watch cases, excluding bezels, since it protects the movement and is not a complete case. Made specifically for luxury dive watches.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied in bulk as general-purpose metal stampings
Loose metal parts without watch-specific design features fall under base metal articles of heading 7326.
If made primarily of plastic rather than metal
Plastic watch case parts are classified by material in Chapter 39, not Chapter 91.
If containing precious metal inlays exceeding base metal value
Parts with significant precious metal content shift to Chapter 71 classifications.
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Import Tips & Compliance
• Verify material composition for alloy-specific duties; ensure engravings don't trigger jewelry classifications
• Obtain supplier certifications for base metal content to avoid precious metal headings
Related Products under HTS 9111.90.70.00
Titanium Watch Case Ring Spacer
A precision-machined titanium ring that spaces the movement within the watch case middle. Falls under HTS 9111.90.70.00 as an 'other' watch case part essential for case assembly and shock absorption. Used in high-end sports chronographs.
Ceramic Watch Case Bezel Insert
A high-polish ceramic insert for rotating watch bezels, with laser-etched dive scale markings. Classified in HTS 9111.90.70.00 as 'other' case parts since bezel inserts are excluded from specific bezel subheadings. Common in luxury tool watches.
Sapphire Crystal Watch Case Gasket
A silicone gasket sealing the sapphire crystal to the watch case for 300m water resistance. HTS 9111.90.70.00 applies as an 'other' case part integral to case assembly and waterproofing. Standard in professional dive watches.
Brass Watch Case Crown Tube
A threaded brass tube mounted in the watch case side for winding crown attachment and water sealing. Classified under HTS 9111.90.70.00 as 'other' watch case parts facilitating case-winder integration. Used across mechanical watch models.
Aluminum Watch Case Lug Inserts
Lightweight aluminum inserts that reinforce watch case lugs for strap attachment durability. HTS 9111.90.70.00 covers these as 'other' case parts preventing lug fractures in sports watches. Often coated for corrosion resistance.
Carbon Fiber Watch Case Spacer Ring
Ultra-light carbon fiber composite ring spacing bezel from case middle for aesthetic depth. Falls under HTS 9111.90.70.00 as 'other' non-metallic watch case part in modern composite cases. Popular in racing chronographs.