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Welder Red Seal · Question

A drawing shows an assembly composed of several parts. One part is labelled 'PART A - QTY 4', another 'PART B - QTY 2' and 'PART C - QTY 1'. On the bill of materials (BOM), each part also has a Material Specification (e.g., SA-36, ASTM A53 Gr. B). What is the primary purpose of the 'QTY' designation on the drawing and in the BOM?

QTY, standing for 'quantity', specifies how many units of a particular part are needed for a single complete assembly. This is crucial for material procurement

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Question: A drawing shows an assembly composed of several parts. One part is labelled 'PART A - QTY 4', another 'PART B - QTY 2' and 'PART C - QTY 1'. On the bill of materials (BOM), each part also has a Material Specification (e.g., SA-36, ASTM A53 Gr. B). What is the primary purpose of the 'QTY' designation on the drawing and in the BOM?

Answer options:

  • It indicates the relative size of each part.
  • It specifies the maximum allowed number of defects for that part. ✅ It denotes the quantity of each specific part required to complete one assembly.
  • It represents the number of sub-components within each main part.

Correct answer: It denotes the quantity of each specific part required to complete one assembly.

Explanation: QTY, standing for 'quantity', specifies how many units of a particular part are needed for a single complete assembly. This is crucial for material procurement and assembly planning. It has no relation to size, defects, or sub-components.

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