U.S. exports of Single Elastomeric Filament Yarn, Untwisted or Low-Twist (HS 540244) totaled $3.9M in September 2026.
Importers of Single Elastomeric Filament Yarn, Untwisted or Low-Twist paid $566K in duties in September 2026, an average duty rate of 21.72% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: September 2026 dataElastomeric filament yarn — commercially dominated by spandex (Lycra/elastane) — is the stretch-enabling component in activewear, swimwear, hosiery, compression garments, and stretch denim. South Korea leads US supply under this heading, with China and Vietnam also significant sources. The heading's three 10-digit lines (5402440000, 5402440005, and 5402440040) cover single elastomeric yarn with twist not exceeding 50 turns per meter; yarn with higher twist or in multiple/cabled form classifies elsewhere, and the distinction between bare elastomeric yarn and covered or core-spun elastic yarn is a frequent classification question at entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
35 import shipments a month
Bare elastomeric yarn — a single strand of elastomeric polymer with no covering fiber — classifies under heading 540244 when untwisted or with low twist. Once that elastomeric core is wrapped or covered with another yarn (nylon, polyester, cotton), the product typically reclassifies based on the covering fiber or as a gimped yarn under a different heading. Importers should verify whether the yarn arrives bare or covered, as the two forms carry different HTS codes and potentially different duty rates.
South Korea hosts major elastomeric fiber producers and has well-established synthetic fiber manufacturing infrastructure. Imports from South Korea may be eligible for preferential duty treatment under the US-Korea Free Trade Agreement (KORUS), subject to applicable rules of origin. Importers should confirm origin qualification with a licensed customs broker before claiming KORUS preference.
Subheading 4 of 22 in heading 5402
Subheading 540244 · $3.9M of $49.0M
ImportsExports
Imports
$2.6MYoY · free account
Exports
$3.9MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $33.2M of Single Elastomeric Filament Yarn, Untwisted or Low-Twist and exported $43.0M.
Through September 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 540244 — Single Elastomeric Filament Yarn, Untwisted or Low-Twist, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5402440040 | Elastomeric Yrn, Untwst/Twst,<=50 Trn/M, Nt Rtl | $3.2M | 19.44% | 100.00% | $623K |
| 5402440005 | Elastometric Yarn Syn Fil Untwst/Twst Lt 5 M2 | $493K | 20.87% | 76.53% | $103K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5402440000 | Elastomeric Yrn, Untwst/Twst,<=50 Trn/M, Nt Rtl | $4.2M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · September 2026
destination
Guatemala and El Salvador together take 58% of it.
customs district
origin
entry
rate provision · imports
3.7% enters free of duty; duty collected equals 21.72% of imports for consumption.