Nano Silk 50D Tying Thread
  • Nano Silk 50D Tying Thread

    Semperfli Nano Silk 50D (12/0)

    Nano Silk is regarded as the tying thread of choice of professional fly tyers worldwide. Being so super strong and available in such a variety of colors and deniers 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.

    Specially formulated Gel Spun Polyethylene for extra strength
    50 Denier 50D
    Thread Aught (or /0 sizing) 12/0
    Breaking Strains 1,900gm / 4.2lb 
    Recommended hook size guide #8-#18
    Use as fly tying thread for smaller midges, emergers and dry flies, Euro nymphs

    50m per spool on colored spools

    100m per spool on Black and White

    Because Nano Silk lays perfectly flat you get no thread build up. Indeed check out our video where we put 100 wraps on a thread and you still have no head buildup!


    With Nano Silk you will have confidence that even the smallest of flies can be tied without your thread breaking! Strength 10 times stronger than high quality stainless steel of same diameter.

    If you rotate Nano Silk anti clockwise to untwist (it has 100 twists per meter to keep the thread together) it will lay perfectly flat, it can be used for foam or split for a dubbing loop with a fine needle.

    White Nano Silk can be dyed with a simple permanent marker pen for any color you may desire. Alternatively, the last 4"; 100mm can be colored with a marker pen for a head.

    As with ALL GSP type threads Nano Silk must be used with a ceramic bobbin holder.

    It is recommended that you use a craft blade or razor blade to cut Nano Silk. It is extremely tough, please do not use your best scissors!