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.
Numbness in pinky finger may also be caused by damage to the nerve on the injured side of the finger. There are small nerves, which measure only about two to three millimeters in diameter, in the finger that run along each side. Damage to the finger's nerves may occur due to cuts or a serious hand 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.