無料 · 計算と変換
タップ下穴.
呼び径、ピッチ、ねじ山率から下穴径を見積もります。
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.
使い方: タップ下穴
データを入力するかファイルを選び、設定を調整して結果を生成します。コピーやダウンロードの前に結果を確認してください。
制限と対応形式
入力内容はお使いの端末で処理されます。
英語の技術説明
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.