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Semperfli Nano Silk

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Description / Semperfli Nano Silk

Semperfli Nano Silk is the ultimate tying thread, trusted by professional fly tyers worldwide. Engineered for unmatched strength and versatility, it is available in three deniers—30D, 50D, and 100D—making it the ideal choice for micro flies, large predator patterns, and everything in between. Whether you're tying delicate dry flies or robust saltwater patterns, Nano Silk provides the perfect balance of durability, finesse, and precision.

Nano Silk 30D (18/0)
Designed for micro flies, Nano Silk 30D is an ultra-fine thread perfect for hook sizes 16 to 32. Its incredible strength ensures it won’t snap during tying, while its flat-laying properties prevent thread build-up. This makes it ideal for intricate flies where precision is paramount. Despite its delicate appearance, it boasts a breaking strain of 2.51 lbs and can be split for effortless dubbing.

Diameter: 18/0 (30 denier)
Strength: 1,140g / 2.51 lbs
Perfect for: Small flies, size 16 to 32 hooks
Special Features: Flat-laying for no head build-up, 10x stronger than steel of the same diameter

Nano Silk 50D (12/0)
For versatile fly tying, Nano Silk 50D excels with hook sizes 6 to 16. It is perfect for creating general-purpose flies, including nymphs, dry flies, and wet flies. With a breaking strain of 4.2 lbs, it offers exceptional durability without compromising on finesse. Like its finer counterpart, it can be split for dubbing, making it a go-to for most fly tyers.

Diameter: 12/0 (50 denier)
Strength: 1,900g / 4.2 lbs
Perfect for: General-purpose flies, size 6 to 16 hooks
Special Features: No thread build-up, strong and reliable

Nano Silk 100D (6/0)
Nano Silk 100D is crafted for larger patterns, including salmon, predator, and saltwater flies. It’s ideal for spinning deer hair and tying robust streamers, withstanding the rigors of saltwater environments. Designed for hook sizes #10 to 2/0, this thread provides unmatched strength with a breaking strain of 8.4 lbs.

Diameter: 6/0 (100 denier)
Strength: 3,800g / 8.4 lbs
Perfect for: Large flies, size #10 to 2/0 hooks
Special Features: Flat-laying for clean finishes, excellent for deer hair spinning

Why Choose Semperfli Nano Silk?
Unmatched Strength: 10x stronger than steel of the same diameter.
No Thread Build-Up: Lays perfectly flat, no matter how many wraps.
Versatile Applications: Available in multiple deniers to suit all fly sizes and styles.
Colour Variety: Wide range of colours for endless creative possibilities.

Semperfli Nano Silk is the gold standard for tying threads, offering precision and performance for all levels of fly tyers. From delicate size 32 flies to rugged saltwater patterns, this thread delivers every time.

Available in multiple deniers and colours (see drop down menu).
Includes 50 metres of Nano Silk per spool.

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