Engineering English
Part Number
Engineering Fundamentals · Last updated: July 30, 2026 · How this entry was written
Definition: A part number is a unique identifier assigned to a component or assembly within an engineering system. It is used to track the item across drawings, bills of materials, and inventory databases.
Example in context
“When ordering replacement parts, always quote the part number printed on the engineering drawing.”
“Yedek parça sipariş ederken daima mühendislik çiziminde basılı olan parça numarasını belirtin.”
Where engineers use it
Part numbers appear in the title block, bill of materials, and on the drawing itself. Engineers use them to identify components for procurement, assembly, and revision tracking. A consistent part numbering system is crucial for configuration management.
Synonyms: item number, catalog number, reference number
Practice: can you use “Part Number” at work?
An engineer receives a drawing with an illegible part number. They must locate the correct identifier from the bill of materials and confirm it with the design team.
Show a model answer
“Cross-check the part number on the drawing with the inventory system before issuing the order.”
“Part Number” in 21 languages
| English | Part Number |
|---|---|
| Turkish | parça numarası |
| French | numéro de pièce |
| German | Teilenummer |
| Spanish | número de pieza |
| Chinese | 零件号 |
| Arabic | رقم القطعة |
| Portuguese | número da peça |
| Russian | номер детали |
| Japanese | 部品番号 |
| Italian | numero di parte |
| Vietnamese | số bộ phận |
| Hindi | भाग संख्या |
| Thai | หมายเลขชิ้นส่วน |
| Indonesian | nomor bagian |
| Korean | 부품 번호 |
| Bengali | পার্ট নম্বর |
| Dutch | onderdeelnummer |
| Swedish | artikelnummer |
| Finnish | osanumero |
| Ukrainian | номер деталі |
Frequently asked questions
What does Part Number mean in engineering?
A part number is a unique identifier assigned to a component or assembly within an engineering system. It is used to track the item across drawings, bills of materials, and inventory databases. In Engineering Fundamentals, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Part Number?
Part Number is pronounced /pɑːrt ˈnʌmbər/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Part Number used in a sentence?
Example from an engineering context: “When ordering replacement parts, always quote the part number printed on the engineering drawing.”
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