Sourcing flare nut spanners from China

Flare nut spanner duty: 0%

Read from the UK Trade Tariff on 30 September 2026, heading 8204 covers hand-operated spanners and wrenches and interchangeable spanner sockets. Ordinary non-adjustable flare nut spanners fit the non-adjustable line, 8204 11 00 00. The table shows product variants within that same commodity line.

The supplied tariff record gives 0% duty on goods from China and lists no anti-dumping or countervailing duties, suspensions or attached import controls. A set containing only spanners stays in its own heading; adding other types of tools can change the classification.

Confirm the commodity code against the actual construction and contents of the shipment. See the ratcheting combination spanner guide for the wider spanner family.

Specify nut fit and tube clearance

Flare nut spanners have a slotted ring head that passes over a tube and grips its union nut. Specify metric or imperial openings, the size pairing at each end, tube-slot width, head thickness, offset and handle length. Supply representative nuts and tubing so the factory can check access and engagement against your application.

Agree the steel grade, heat treatment, hardness report, finish and proof-load test before production. Use ISO 691 for spanner opening tolerances, as described in the hand tool sets guide. Check slot clearance separately against the drawing and approved sample.

For consumer tools sold in Great Britain, the general product safety framework requires safe products. Keep the intended use and test evidence with the purchasing specification, and agree clear instructions for selecting the correct size.

Worked duty example

Illustrative example, not a quote: 5,000 fixed-head flare nut spanners, illustrative order under 8204 11 00 00, invoiced at £30,000 free on board, with £2,000 of freight and insurance to the UK. The customs value is £32,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £32,000, so it is £6,400. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Nut fit: gauge each opening and try representative union nuts; check full seating, contact on the flats and clearance around the tube.

Head strength: check hardness and the agreed proof-load result; inspect the slotted head for spreading, cracks and permanent distortion.

Finish: inspect slot edges for burrs, plating for peeling and exposed steel for rust; compare head thickness and offset with the approved drawing.

Identification and packing: check size markings against measured openings, count the agreed assortment and inspect holders and cartons for transit damage. Arrange quality inspection around these checks.

What goes wrong

An oversized opening or a head that spreads can slip and round a union nut. A narrow tube slot prevents fitting the tool; a wide slot can leave less support around the nut. Thick heads and the wrong offset can prevent access beside adjacent fittings, even when the marked size is correct.

Uneven heat treatment, sharp slot edges and peeling plating can escape a visual sample approval. Test production samples on the agreed fittings and under the agreed load, then compare openings before and after testing. Keep failed stock separate while the supplier investigates.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.