Machining

The internal diameter of a hole

• a hole
• A bore

the operation of making or finishing circular holes

• boring
• bore

Chips

• yummy snack
• cuttings made by a cutting tool

• twist drill
• center drll

Chamfer

• beveled edge
• a rounded edge

a recessed hole conically for a screw head

• countersunk
• counterbore

Die

• internal threads
• external threads

the act of making a hole using a twist drill

• drilling
• boring

the act of using a file to smooth and flatten a surface

• filing
• sawing

forming a pattern on the outside of a shaft by impressing the rollers into the surface

• knurl
• turn