What is the U.S. tariff rate on steel fasteners?

USITC calculated duties imply an effective rate of 52.56% in Jun 2026 (calculated duties ÷ covered customs value, USITC DataWeb). The parseable Column 1 General line-rate range is 0%–12.5%; individual lines are called “Free” only when the official General field is literally Free, and product, origin, preference and tariff mix can contribute to the observed-rate difference.

What are the statutory MFN line rates for steel fasteners?

The parseable Column 1 General line-rate range is 0%–12.5% across the family's 17 eight-digit HTS lines in the 2026 Harmonized Tariff Schedule (headings 7318). “Free” means the official General field is literally Free for a line; it does not determine final entry liability.

Which countries supply the most steel fasteners to the U.S.?

Top retained sources in 2025: Taiwan ($1.9B at 31.72%), China ($1.0B at 65.46%), Japan ($571.7M at 32.32%). Taiwan holds 32% of total family import customs value. Retained sources cover 88%; their HHI is 1540, a lower bound whose floor falls in the moderately concentrated range without classifying the omitted tail.

How much steel fasteners does the U.S. import?

$6.0B of customs value in 2025, with $2.2B in USITC Calculated Duties — an effective calculated-duty rate of 35.91%.

Is the U.S. a net importer of steel fasteners?

Yes — a net importer in 2025: $6.0B imported vs $3.5B exported (exports are 59% of imports).

What is the customs unit value of steel fasteners?

$3.54/kg in 2025, derived as customs value ÷ reported quantity from USITC DataWeb. It is an aggregate across the family's product and origin mix, not a transaction price or supplier quote.

Tariff monitor · Metals & Mill Products

Steel Fasteners: Statutory & Effective Tariff Rates

USITC Column 1 General rates for 17 steel fasteners HTS lines (parseable range 0%–12.5%). Effective rate Jun 2026: 52.56%; monthly history since 2014.

The short answer

The observed effective calculated-duty rate on U.S. imports of steel fasteners was 52.56% in Jun 2026, up from 47.62% a year earlier — USITC Calculated Duties divided by covered customs value. The Column 1 General line-rate range is 0%–12.5% across 17 HTS lines in the 2026 schedule; individual lines are called “Free” only when the official General field is literally Free, which still does not determine a shipment’s final duty. Taiwan is the largest source, holding 32% of 2025 imports.

Statutory rates from the schedule

Screws, bolts, nuts, washers, rivets, and similar threaded and non-threaded fasteners of iron or steel. This family covers HTS heading 7318: 17 eight-digit rate lines with a parseable Column 1 General range of 0%–12.5% in the 2026 schedule. “Free” means the official General field is literally Free for that line; it does not determine final entry liability.
Chapter 99 references on individual lines (for example, 9903.90.09) identify provisions to review; applicability and any additional duty depend on the entry facts.

Observed calculated-duty data

Latest month on record (2026-06): 52.56% effective on $467.8M of imports, versus 47.62% in the same month a year earlier. The monthly archive holds 150 observations from 2014-01 through 2026-06.
In 2025, U.S. imports for consumption in this family totaled $6.0B in customs value, with $2.2B in USITC reported calculated duty on $6.0B of covered customs value: an effective calculated-duty rate of 35.91%. The aggregate reflects the recorded entry mix but does not attribute the result to a specific legal provision.
A year earlier the effective calculated-duty rate was 6.49%, so the observed rate rose 29.4 points.
Top source countries in 2025: Taiwan ($1.9B at 31.72%), China ($1.0B at 65.46%), Japan ($571.7M at 32.32%), Canada ($320.6M at 16.41%), Germany ($315.1M at 34.35%).
Reported freight and insurance equaled 7.4% of covered customs value in 2025 ($390.3M total); charge coverage was 88% of customs value, from USITC DataWeb. It is shown alongside the effective calculated-duty rate and is not part of the customs-value duty base.
Customs unit value: 3.5449 per kg in 2025, aggregate declared customs value divided by reported quantity across eligible single-unit lines (USITC DataWeb); not a transaction price.

Representative rate lines

7318.11.00.00: Coach screws · MFN 12.5%
7318.12.00.00: Other wood screws · MFN 12.5%
7318.13.00: Screw hooks and screw rings · MFN 5.7%
7318.14.10: Having shanks or threads with a diameter of less than 6 mm · MFN 6.2%
7318.14.50: Having shanks or threads with a diameter of 6 mm or more · MFN 8.6%
7318.15.20: Bolts and bolts and their nuts or washers entered or exported in the same shipment · MFN Free
7318.15.40.00: Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter ( · MFN Free
7318.15.50: Studs · MFN Free

Frequently asked questions

What is the U.S. tariff rate on steel fasteners? USITC calculated duties imply an effective rate of 52.56% in Jun 2026 (calculated duties ÷ covered customs value, USITC DataWeb). The parseable Column 1 General line-rate range is 0%–12.5%; individual lines are called “Free” only when the official General field is literally Free, and product, origin, preference and tariff mix can contribute to the observed-rate difference.
What are the statutory MFN line rates for steel fasteners? The parseable Column 1 General line-rate range is 0%–12.5% across the family's 17 eight-digit HTS lines in the 2026 Harmonized Tariff Schedule (headings 7318). “Free” means the official General field is literally Free for a line; it does not determine final entry liability.
Which countries supply the most steel fasteners to the U.S.? Top retained sources in 2025: Taiwan ($1.9B at 31.72%), China ($1.0B at 65.46%), Japan ($571.7M at 32.32%). Taiwan holds 32% of total family import customs value. Retained sources cover 88%; their HHI is 1540, a lower bound whose floor falls in the moderately concentrated range without classifying the omitted tail.
How much steel fasteners does the U.S. import? $6.0B of customs value in 2025, with $2.2B in USITC Calculated Duties — an effective calculated-duty rate of 35.91%.
Is the U.S. a net importer of steel fasteners? Yes — a net importer in 2025: $6.0B imported vs $3.5B exported (exports are 59% of imports).
What is the customs unit value of steel fasteners? $3.54/kg in 2025, derived as customs value ÷ reported quantity from USITC DataWeb. It is an aggregate across the family's product and origin mix, not a transaction price or supplier quote.

About this data

Reference statistics derived from USITC published data. Not a customs ruling. MFN-Free and Special-rate fields describe statutory line coverage only; final entry liability requires origin, date, eligibility, exclusions and other transaction facts. Calculated Duties are statistical estimates, not a cash-collections ledger. Confirm classification, origin, program eligibility, and final entry liability with a licensed customs broker.

Last reviewed 2026-08-31.