Curved Dry Mini · Sizes #18-22
The Ahrex FW516 Black is a barbed curved dry mini hook available in sizes #18-22. It's built around a shank one size shorter than standard, giving a compact profile that suits short-bodied naturals like midges, buzzers and small emergers, paired with standard wire — a balance of strength and weight that works across most freshwater applications. Tyers reach for it most often when working on dry fly, cdc, mayflies. The sections below break down what each specification actually means at the vice, which patterns suit it, and which hooks from other manufacturers you can substitute when it's out of stock.
Shank length (1XS). This hook has a shank one size shorter than standard, giving a compact profile that suits short-bodied naturals like midges, buzzers and small emergers.
Wire strength (Std.). It's made from standard wire — a balance of strength and weight that works across most freshwater applications.
Bend and gape (Wide). The FW516 Black uses a wide gape, improving hook-up rates and leaving clearance for a bulkier dressed body.
Eye type (Straight). It's finished with a straight (ring) eye, the most versatile option — it keeps the fly tracking in line with the leader, which suits nymphs and streamers.
Barbed. This is a barbed hook. Many competition rules and an increasing number of catch-and-release fisheries require barbless, so check local regulations — the barb can be pinched down with flat-jawed pliers before you dress the hook.
The Ahrex FW516 Black is tagged in the Woolly Bug database for dry fly, cdc, mayflies, caddis. Patterns that sit naturally on this hook include Adams, Parachute Adams, Royal Wulff, CDC Dun, CDC Emerger, CDC & Elk. Because the hook's proportions drive the finished fly's silhouette, it's worth matching the pattern's intended shape to the shank rather than forcing a recipe onto the wrong blank.
The FW516 Black runs from size 18 through 22. The smaller end of the range (down to size 22) covers midge and small mayfly work, where fine tying thread and sparse dressings matter more than bulk. If you're buying this hook for the first time, the mid-range sizes see the most use at the vice, and tracking exactly which sizes you own is where an inventory app earns its keep — it's the detail most tyers forget at the fly shop counter.
These hooks match closely on the specifications that determine a fly's proportions and behaviour, so they work as substitutes.
If the Ahrex FW516 Black is out of stock, the closest match in the database is the TMC 3761BL. When substituting, the specifications that matter most are gape and shank length — these determine whether the finished fly keeps its intended proportions. Wire strength is the next consideration, since it changes how the fly sits in the water: a heavier wire will sink a pattern that was designed to float. Eye type is usually the most forgiving difference, though switching to or from a jig eye changes how the hook rides entirely.
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Download FreeThe Ahrex FW516 Black is a curved dry mini hook used for Dry Fly, CDC, Mayflies, Caddis. It's available in sizes #18-22 with a 1XS shank and Std. wire.
The closest equivalents are: TMC 3761BL. These match on the specifications that matter most — shank length (1XS), wire strength (Std.) and bend (Wide).
The Ahrex FW516 Black is barbed. Barbed hooks can be pinched down with pliers where barbless is required by competition rules or fishery regulations.
It's available in sizes #18-22.
Woolly Bug