Overview Reviews Product Description 3/8" BSF20 tpi55 degree thread angle Die Nuts are designed for cleaning and resizing existing damaged threads. Product Videos Custom Field Product Reviews Write a Review Write a Review × Die Nut Alloy Steel 3/8 BSF Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *