Definition check: Spot facing operation Spot facing is the machining operation of smoothing and squaring the surface around a hole to provide a flat seating for a bolt head or washer. Is this statement correct?

Introduction / Context:
Spot facing is a finishing operation performed around an existing hole to create a local flat surface—useful for seating fasteners uniformly. It is common on cast or forged parts where the surrounding surface may be irregular.

Given Data / Assumptions:

• An existing hole has already been drilled or cast.
• A shallow counterbore-like flat is required.
• Tooling may be a spot facer, counterbore, or end mill depending on access.

Concept / Approach:
Unlike countersinking (which creates a conical seat) or counterboring (which enlarges the hole to a deeper cylindrical recess), spot facing produces a shallow, flat annular surface around the hole. It ensures proper clamping and load distribution for bolt heads or washers.

Step-by-Step Solution:
Identify the goal: flat seating around a hole.Select appropriate tool: spot facer or counterbore with pilot for concentricity.Machine a shallow flat just sufficient for the fastener seat.

Verification / Alternative check:
Machine shop manuals define spot facing precisely as smoothing/squaring a limited area around a hole to provide a flat seat.

Why Other Options Are Wrong:
“False” conflicts with the standard definition. The operation is not limited to blind holes or countersunk screws, and it can be performed on drill presses, milling machines, or machining centers.

Common Pitfalls:
Over-cutting beyond the necessary diameter; failing to use a pilot leading to misalignment; neglecting burr removal.

Final Answer:
True