Metal and Plastic Parts Blog

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Must the Pilot Hole Depth for Threads Strictly Follow Design Manual Standards?

A technician recently reached out to ask how deep the pilot hole should be drilled for tapped holes.As shown in the diagram: A = actual thread engagement length, C = effective thread depth, B = pilot ...

saman Jul 02,2026 1826 views

thread tapping blind hole machining machining standards tap drill hole mechanical design

CNC Machining

Practical Knowledge Points in Mechanical Design

1. Failure forms of mechanical parts: overall fracture, excessive residual deformation, surface damage of parts (corrosion, wear and contact fatigue), failure caused by damage to normal working condit...

Justway Jul 30,2024 3667 views