UNF (Unified Fine Thread) Unified Fine (UNF) and Unified Coarse (UNC). American threads consist of two common and easily obtained thread patterns known as U. N.F and U.N.C. U.N.F [national fine] is exactly the same as the old S.A.E [standard american engineers] that existed before threads were unified.
Tingling in the pinky finger can be caused by a disorder of the neck spine, anatomical abnormality around the clavicle (cervical rib, anomalous muscles resulting in thoracic outlet syndrome), disorders of the elbow (cubital tunnel syndrome), wrist (Guyon's canal syndrome), hand (hammer hand syndrome) or the pinky finger itself (injury).
Numbness in your pinkie finger may be caused by an underlying medical condition. For example, diabetic nerve damage is common in people who have had the disease for many years. Early on, you may have mild tingling and numbness that comes and goes, typically in your fingers or toes. Eventually the affected area may become completely numb. Other medical conditions and certain medications and toxins can also cause finger numbness.