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3/8-16 UNC Cone Point Set Screw

9.525mm diameter 3/8-16 UNC cone point set screw in hardened steel, ideal for anti-rotation locking in motors and pumps. It qualifies for HTS 7318.15.80.20 as an other set screw with shank/thread diameter of 6mm or more.

Import Duty Rates by Country of Origin

Origin Country	MFN Rate	Ch.99 Surcharges	Total Effective Rate
🇨🇳China	8.5%	+35.0%	43.5%
🇲🇽Mexico	8.5%	+10.0%	18.5%
🇨🇦Canada	8.5%	+10.0%	18.5%
🇩🇪Germany	8.5%	+10.0%	18.5%
🇯🇵Japan	8.5%	+10.0%	18.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

7318.15Same rate: 43.5%

If imported in bulk packs over 1000 pieces

Certain high-volume statistical suffixes apply based on packaging quantity.

7326.90.86Lower: 37.9% vs 43.5%

If considered other steel articles not specifically fasteners

Ambiguous small steel parts without clear screw function may default to 7326.

8503.00.95Lower: 38% vs 43.5%

If part of electric motor assembly

Integral fasteners in motors classify under Chapter 85 electrical machinery parts.

Not sure which classification is right?

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Import Tips & Compliance

• Use precise thread gauge certification to prove UNC standard and diameter compliance

• Avoid packing in consumer kits; bulk industrial packaging prevents retail set reclassification

• Monitor Section 232 tariffs on steel content for additional duties

Related Products under HTS 7318.15.80.20

M8 x 50mm Alloy Steel Set Screw

A precision-machined set screw made of alloy steel with M8 threading and 50mm length, designed to secure pulleys, gears, and collars on shafts without a protruding head. It falls under HTS 7318.15.80.20 as a set screw with shank/thread diameter of 6mm or more (M8 = 8mm). Used in industrial machinery for its cup point tip that digs into the shaft surface.

1/4-20 UNC Cup Point Set Screw

Imperial 1/4-20 UNC set screw with cup point, made from carbon steel, measuring 6.35mm diameter and typically 1/2 to 2 inches long for locking components in place. Classified in HTS 7318.15.80.20 due to thread diameter over 6mm and headless design for set screw applications in equipment assembly.

M12 x 75mm Flat Point Set Screw

Heavy-duty M12 metric set screw with flat point for adjustable positioning against shafts or rods, constructed from medium carbon steel, 12mm diameter exceeding the 6mm threshold. HTS 7318.15.80.20 applies to these other set screws used in conveyor systems and heavy machinery.