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).
Often referred to as the funny bone, this nerve is not well padded and is easily compressed when your arms are on an armrest or desk. Cubital tunnel syndrome causes numbness, tingling and pain along the pinky-side of the ring finger and the hand, as well as the pinky finger. It is easily distinguished from carpal tunnel syndrome because it affects different fingers.