FW538

Mayfly Dry

Compare this hook View manufacturer page Reference source ↗

Ahrex Manufacturer

8-14 Sizes

Dry Fly Application

Mfr. data Source

Catalog attributes

Eye

Eye TypeTapered

Eye OrientationTurned Down

Wire & Shank

Wire GaugeStandard

Shank LengthUnknown

Bend & Gap

Bend FamilyRound (Kendal)

GapStandard

Point & Finish

Point StyleStandard Spear

FinishBlack nickel

WireSingle

Size & scale lab

Physical specimen Catalog record

Selected size8

Catalog record

Overall Length: 26.6 mm
Gap Width: 6.5 mm
Wire Diameter: 0.55 mm

Published Spec

U.S. customary (inches) with metric equivalent. Published Spec = sourced from manufacturer published data.

Computed automatically from catalog data and updated as new hooks are added.

Hook model	Match	Analysis	Compare
E6A No. 10 — E6A 4X Fine Short Length Down Eye Hooks	92%	Matches: Bend, Wire, Gap, Eye, Eye Orient. +3 more Differs: Finish: black_nickel vs Bronzed; Forging: Round vs Forged	Compare
3x TDE No. 12 — Turned Down Eye Dry Fly	84%	Matches: Bend, Eye, Eye Orient., Point, Forging +2 more Differs: Wire: Standard vs Fine (1X Fine); Gap: Standard vs Narrow; Finish: black_nickel vs Bronzed	Compare
Nyack TDE — Nyack TDE (Down Tapered Eye)	83%	Matches: Bend, Wire, Gap, Eye, Eye Orient. +3 more Differs: Finish: black_nickel vs Bronzed; Application: Dry Fly vs Dry Fly, Wet Fly, Nymph	Compare
E1A No. 20 — E1A 4X Fine Dry Fly	82%	Matches: Bend, Gap, Eye, Eye Orient., Point +3 more Differs: Wire: Standard vs Extra-Fine; Finish: black_nickel vs Bronzed	Compare
L4A No. Sizes 12 and 14 — Captain Hamilton Featherweight	81%	Matches: Bend, Eye, Eye Orient., Point, Application +1 more Differs: Wire: Standard vs Fine (1X Fine); Gap: Standard vs Wide; Finish: black_nickel vs Bronzed +1 more	Compare

Notes

Imported from the published Ahrex spec sheet for FW538 plus the Ahrex product page. Measured values (hook length, gap, wire diameter) are manufacturer-published and carried on the size rows as published_spec. Inferred, not published: bend_family round_kendal, eye_type and eye_orientation read from the sheet illustration. shank_length_category is set only where the model name states it, otherwise unknown - Ahrex does not publish an X-rating. Verify before relying on the inferred fields.

Industry cross-reference

Long shank dry fly hook

2X–3X long shank down eye

Ahrex	FW539Spec record
Daiichi	1280Spec record
Firehole	618Chart only
Fulling Mill	FM5025Chart only
Mustad	R43APSpec record 94831Chart only R43Chart only
Orvis	JA1638Chart only
Partridge	H1AFull record
Tiemco	5212Chart only

Green entries are full catalog records; amber entries are spec records. Gray entries are chart-only and not physically verified.

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Sources & Documentation

Sources: this specimen and its packaging.

Confidence notation key

P	Photographically verified — Directly observable in the photograph(s) on this page.
V	Verified by documentation — Confirmed by manufacturer catalog, spec sheet, or published reference.
I	Inferred — A logical deduction from observable or documented evidence, not directly stated.
E	Estimated — An approximation based on visual comparison, proportional analysis, or limited data.
S	Speculative — A reasoned hypothesis that cannot be confirmed from available evidence.

Unnotated claims are the compiler’s synthesis; see Sources. All photographs on garrenwood.com are taken on a measurement grid where each square equals 1/10 inch (0.1″ / 2.54 mm).