Semperfli
Semperfli Nano Silk Bulk
Semperfli Nano Silk Bulk
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DESCRIPTION & FEATURES
DESCRIPTION & FEATURES
Nano Silk Big Game 3/0 200D Description:
Nano Silk is an amazing fly tying silk. Made from Gel Spun Yarn, (gsp) is the strongest fly tying yarn you will find for its diameter. We use the 3/0 yarn for predator and sea fishing patterns. It is ultra strong and designed for those large flies! This incredible 200D material has a breaking strain of over 7Kg almost 15lbs. The white is dyed using permanent marker pens very easily to match any colour head required.
Features:
- Specially formulated Gel Spun Polyethylene for extra strength
- 200 Denier
- Thread Aught: 3/0
- Breaking Strains: 7,600gm / 16,8lb
- Recommended Hook Size Guide: #10 - #2/0 and larger
- 100m per spool
Nano Silk Predator 6/0 100D Description:
Nano Silk is regarded as the tying thread of choice of professional fly tyers worldwide. With Nano Silk 100D being so super strong it has endless possibilities and can be used for micro flies to medium flies. Virtually unbreakable and still capable of being split down for dubbing twists. There is no fly tying thread as strong as Nano Silk anywhere!
Features:
- Specially formulated Gel Spun Polyethylene for extra strength
- 100 Denier
- Thread Aught: 6/0
- Breaking Strains: 3,800gm / 8.4lb
- Recommended Hook Size Guide: #10 - #2/0 and larger
- 200m per spool
Nano Silk 12/0 50D Description:
Nano Silk is regarded as the tying thread of choice of professional fly tyers worldwide. With Nano Silk 50D being so super strong it has endless possibilities and can be used for micro flies to medium flies. Virtually unbreakable and still capable of being split down for dubbing twists. There is no fly tying thread as strong as Nano Silk anywhere!
Features:
- Specially formulated Gel Spun Polyethylene for extra strength
- 50 Denier
- Thread Aught: 12/0
- Breaking Strains: 1,900gm / 4.2lb
- Recommended Hook Size Guide: #8 - #18
- 250m per spool
Nano Silk Ultra 18/0 30D Description:
Possibly the worlds strongest fly tying silk for its diameter. The Nano Silk Ultra is ideal for flies sizes 18 and smaller. And you can still split it down further or use it to tie dubbing loops!. 18/0 (30 dernier) use with ceramic bobbins
Features:
- Specially formulated Gel Spun Polyethylene for extra strength
- 30 Denier
- Thread Aught: 18/0
- Breaking Strains: 1,140gm / 2.51lb
- Recommended Hook Size Guide: #16 - #32
- 500m per spool









At Spawn Fly Fish, we’re proud to carry a handpicked selection of products for anglers of all levels. Explore top brands like Sage, Redington, Douglas LRS, Ross Reels, and more. Whether you’re tying with Shrimp Eyes, crafting with Unreal Dubbing, or looking for Loctite Super Glue Extra Time Control to secure your creations, you’ll find everything you need here.We also stock a wide range of fly tying materials, fly rods, and fly reels—including favorites like Tibor Fly Reels, Lamson Fly Reels, and Redington Fly Reels. For complete guides on where and how to use your new gear, check out our Fly Fishing Guide to Washington or browse our blog or YouTube channel for in-depth product tips and tutorials
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FREE SHIPPING
Free shipping on orders over $49 to the contiguous US
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FREE RETURNS
We stand behind our products. Return shipping is free on all returns shipped from within the United States
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2% PLEDGE
2% of all Spawn profits are donated to conservation groups. This has been true since our 1st day of business