Thread form for drill bit application

A downhole drilling assembly comprising:

• a plurality of pipe sections, each of the plurality of pipe sections comprising:
• a first pipe comprising a pin end and a tapered pin thread structure extending helically along an outer surface of the pin end in spaced thread turns, the tapered pin thread structure comprising:
• a first pin flank and a second pin flank;
• a pin crest extending between a top edge of the first pin flank and a top edge of the second pin flank;
• and
• a pin root extending between a bottom edge of the first pin flank and a bottom edge of a third pin flank of an adjacent pin thread turn, wherein a profile of the pin root is defined by a portion of a pin root ellipse that is tangential to the first pin flank and to the pin flank of the adjacent pin thread turn;
• and
• a second pipe comprising a box end and a tapered box thread structure extending helically along an inner surface of the box end in spaced thread turns, the tapered box thread structure comprising:
• a first box flank and a second box flank;
• a box crest extending between a top edge of the first box flank and a top edge of the second box flank;
• and
• a box root extending between a bottom edge of the first box flank and a bottom edge of a box flank of an adjacent box thread turn, wherein a profile of the box root is defined by a portion of a box root ellipse that is tangential to the first box flank and to the box flank of the adjacent box thread turn,
• wherein the pin end and the box end are threadedly connected and a width of the box root is less than a width of the pin root.