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).
Cubital Tunnel Syndrome. A common cause of tingling and numbness in the ring and small finger is cubital tunnel syndrome. Cubital tunnel syndrome refers to a problem related to compression of the ulnar nerve at the elbow within the cubital tunnel. Compression of the ulnar nerve will cause tingling and numbness, coordination disturbances in the small muscles of your hand, and weakness of hand grip and of pinch strength.