Bohning's F Nock fits micro shafts with an ID of .166" (commonly known as 4mm or G Nock) shafts and G UNI Bushing systems. The F Nock features a double-lock throat of .120" (3.05mm). Each F Nock weighs an average of 6.5 grains (421.2 mg).
Proudly manufactured at the Bohning Factory in Lake City, Michigan, United States.
NOT ALL BRANDS OF NOCKS ARE CREATED EQUAL At Bohning, every nock style must pass the following steps before introduction to the market: 1. Computer simulations identify potential weak points. 2. Destructive testing methods expose possible design flaws or material defects. 3. Accelerated life cycle testing using a custom-built bow is performed at kinetic energy levels exceeding 110 ft-lbs (nearly twice that of most hunting bows). A single nock must withstand over 1000 shots or it goes back to step 1.
Tech tip: for easier insertion and indexing, apply a small amount of Bohning's Tex-Tite or Seal-Tite Wax to the nock shank.