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.
Carpal tunnel syndrome is a common repetitive-stress motion disorder. It is caused by nerve compression and can be quite painful, although symptoms usually start gradually. At first, an affected individual may notice numbness and tingling in the hand, which is often eventually followed by continuous pain. Another cause of left hand numbness could be nerve damage or disease.