# Hook wire diameter vs hook size

> US buyers order hooks by size. Strength is set by wire diameter. Two independent fields, and size alone cannot be compared.

Source: https://luressource.com/sourcing-playbook/hook-wire-diameter-vs-hook-size/

Direct answer. Hook size and wire diameter are independent fields, and a hook order that names only the size has not specified the product. Size sets the gap and the overall proportions; wire diameter sets how much load the hook takes before it opens or straightens. Two hooks carrying the same size number can differ in wire by enough to change which line class they suit, which is why a quotation has to state both before two suppliers can be compared. Key facts. 1) Size and wire diameter are separate fields; a hook named only by size is not a specification. 2) Wire diameter decides the load a hook takes before it deforms, and it is not implied by the size number. 3) In our nine-listing hook sample, reference prices run US$0.07 to US$2.40 per piece and MOQ runs 100 to 2,000 pieces. 4) Two of the nine listings are priced by the pack rather than the piece, so those rows are not comparable until the pack count is known. Frequently asked questions. Q: Why isn't the size number enough to specify a hook? A: Because size describes the shape of the hook, not its strength. The size number tells you the gap and the proportions. It does not tell you how thick the wire is, and wire thickness is what decides whether the hook holds under load or opens up. Two suppliers can both quote a 2/0 and deliver hooks that behave differently on the same line. Q: How do US buyers usually describe a hook, and where does that break down? A: A US buyer names a style and a size, for example an offset worm hook in 3/0. That is a good working description on the water and an incomplete one in a purchase order, because the wire is left open. The factory will fill the gap with whatever its own standard is, and different factories have different standards. Q: Does a thicker wire always mean a stronger hook? A: It means more material, which usually means more load capacity, but it also changes how the hook behaves. A heavier wire needs more force to set, weighs more on the bait, and changes the sink behaviour of a lightly weighted presentation. Wire is a trade-off field, not a quality field, and the order should say which side of that trade-off you want. Q: What should a hook order state? A: Five fields: style, size, wire diameter, point and barb configuration, and finish. Add the packing format and the count per pack, because our own sample contains two listings priced by the pack rather than the piece, and a per-pack price cannot be compared to a per-piece one without the pack count. Q: Why does the price band for hooks look so wide? A: Because the type name covers more than one product. Our own nine-listing sample spans bare hooks, jig heads, assist hooks with cord, weighted worm hooks and a buzzbait, at MOQ from 100 to 2,000 pieces. The published band is the range of everything filed under the word hook, not the price of any one of them. Sources (3). 1) The sampled hook listings behind every figure on this page, with unit and MOQ on each row — /opportunities/fishhook-suppliers-china/ 2) How the same unit problem affects every product type in the catalog — /suppliers/ 3) Our rule for separating evidence types rather than merging them — /opportunities/editorial-rules/ A purchase order that names a hook by size has named about half of it. The other half is wire, and it is the half that decides what happens when the hook is loaded. Two fields, not one Hook size describes proportions. It sets the gap between the point and the shank, the length of the shank, and the overall relationship of the parts to one another. It is the field a US angler uses on the water, and it works there because the angler can pick the hook up and feel it. Wire diameter describes material. It sets how much load the hook takes before the point rolls or the bend opens. It is not implied by the size number, and it is not visible in a listing photograph. A buyer reading a quotation sheet has neither the hook in hand nor the wire in the spec, which is exactly the gap this page is about. Same size number, different wire. The difference is invisible in a listing and decisive in the water. Why the gap survives Buyers order by size because that is how hooks are sold at retail, and retail is where most hook knowledge is written down. Suppliers quote by size because that is what the order says. Both sides are behaving correctly, and the specification still has a hole in it. The hole gets filled by the factory's own standard, which is reasonable behaviour from the factory and a problem for the buyer: two factories quoting the same 2/0 are not necessarily quoting the same wire, so the two prices are not prices for the same thing. Wire is a trade-off, not a quality scale It is tempting to read thicker as better. It is not, and treating it that way causes its own problems. A heavier wire takes more force to drive home, so it suits a heavier rod and a heavier line. It adds weight to the bait, which changes how a lightly weighted presentation falls. On a finesse application a thick hook can make the whole rig fish wrong, and on a heavy-cover application a thin hook will open. The useful question is not which wire is better. It is which wire matches the line class, the rod, and the cover the bait is going into. That is a decision the buyer makes and the order records. What the numbers in our own sample show Our hook sample holds nine listings, the largest single type in this catalog, and it is a useful illustration of how loosely the type name is used. Reference prices run from US$0.07 to US$2.40 per piece. MOQ runs from 100 pieces to 2,000. The two lowest-priced listings sit at the highest MOQ in the sample. Those nine listings span bare hooks, jig heads, assist hooks with cord, weighted worm hooks and a buzzbait. That is five different products filed under one word, which is why a published band for hooks is a range across a category rather than a price for anything in it. Two of the nine are priced by the pack rather than the piece, so those rows cannot be compared with the rest until the pack count is known. The fields a hook order has to carry Style. The shape family, named as the factory names it rather than as a retail package names it. Size. The proportions, stated in the numbering system both sides are using. US sizes and Japanese sizes are not always the same number for the same hook. Wire diameter. The field this page exists for. State it, in millimetres or in the factory's own gauge, and state it in the order rather than agreeing it in a message. Point and barb configuration. Whether there is a barb, whether the point is inline or offset, and whether the hook is intended for a bait that will be rigged weedless. Finish. Plating or coating, which is a separate process step and is quoted separately. Add the packing format and the count per pack. Without those two, a per-pack quotation cannot be placed next to a per-piece one, and the comparison silently becomes wrong rather than obviously wrong. How to check a quotation against this Ask for the wire diameter on every row. A supplier who can give it is working from a controlled specification, and a supplier who cannot is quoting from a stock item. Both are legitimate answers; only one of them lets you compare two prices and know what you compared. Send a specification See the sampled hook records