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).
Stroke: Brain damage caused by a mini stroke or stroke can also cause finger numbness. Such numbness is often felt on one side of the body, especially in the arms, hands, and fingers. Apart from numbness, a stroke can cause symptoms, like dizziness, sudden headache, vision problems, difficulty in walking, weakness, etc. Nerve Tumor: Tumors on the nerves in the neck, arms or wrists may also cause numbness and tingling sensation in the fingers.