مجاني · الحسابات والتحويل
مثقاب اللولبة.
قدّر قطر الثقب من القطر الاسمي والخطوة ونسبة السن.
Drill = major − pitch × (percent / 75). At 75% this matches the common one-pitch chart rule. It is a shop estimate, not a gauge inspection. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
- Tap drill
- 8.5 mm
Drill diameter = major diameter − pitch × (thread percent / 75). At 75% this is the common chart rule of one pitch under the major diameter. It is a shop estimate, not a thread-gauge inspection.
طريقة الاستخدام: مثقاب اللولبة
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Drill = major − pitch × (percent / 75). At 75% this matches the common one-pitch chart rule. It is a shop estimate, not a gauge inspection. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
Estimate a tap drill from the major diameter, pitch and a thread percentage. Drill = major − pitch × (percent / 75). At 75% this matches the common one-pitch chart rule. It is a shop estimate, not a gauge inspection. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
M10 × 1.5 at 75% thread → 8.5 mm.