Starrett Micrometer Thimble Replacement
Precision-ground thimble replacement part for Starrett outside micrometers, essential for accurate readings in dimensional measurement. Classified under HTS 9031.90.91 as an accessory for other measuring or checking instruments in this chapter.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the complete micrometer instrument rather than just the thimble part
Complete other measuring instruments fall under 9031.49, while parts go to 9031.90.
If considered grooved pulley components for industrial machinery
Pulley components are excluded from Chapter 90 and classified by material/use in 8483.
If for parts suitable for multiple non-Chapter 90 equipment types
Parts not principally for Chapter 90 apparatus classify in 9033 per note 2(c).
Not sure which classification is right?
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Import Tips & Compliance
• Label shipments with exact micrometer model compatibility and material composition (e.g
• hardened steel)
• Provide manufacturer part numbers on commercial invoices to support classification as instrument accessories
Related Products under HTS 9031.90.91
Test Indicator Contact Point Set
Carbide contact point set for test indicators measuring perpendicularity and alignment. Under HTS 9031.90.91 for other measuring instrument parts.
Radius Gauge Set
Precision fillet and radius gauge set (1/32" to 1") for contour inspection. HTS 9031.90.91 as accessories for profile checking.
Gage Block Accessory Wringing Rack
Stainless steel wringing rack for organizing and cleaning gage blocks in calibration labs. Classified HTS 9031.90.91 as measuring instrument accessories.
Feeler Gauge Strip Assortment
Metric feeler gauge strip set (0.02-1.00mm) for clearance and gap measurements. Classified HTS 9031.90.91 as checking instrument accessories.
Bore Gauge Extension Rod Set
Precision ground extension rods for inside bore micrometers and gauges up to 12 inches. HTS 9031.90.91 covers such measuring instrument accessories.
Mitutoyo Digital Caliper Sensor Assembly
This sensor assembly is a replacement part for Mitutoyo digital calipers used in precision measurement of lengths and diameters. It falls under HTS 9031.90.91 as a part of measuring instruments not specified elsewhere in Chapter 90, specifically for other parts and accessories of checking appliances.