The stud and nut pictured just below "B" is...

🔍 Key Concepts

• Identify what component the stud and nut actually clamp or pull against in the cross‑section just below label B • Recall the function of a shaft sleeve and how it is normally locked in place on a centrifugal pump shaft • Compare the shapes and positions of the impeller, shaft sleeve, and packing gland in the drawing to see what this stud could reasonably control

💭 Think About

• Trace the load path: if you tighten that stud and nut, which parts would move closer together, and what motion would that prevent or control? • Ask yourself whether that stud and nut rotate with the shaft or stay stationary with the casing or stuffing‑box housing • Look for how the impeller is secured to the shaft elsewhere in the drawing—does that appear to depend on this particular stud and nut?

✅ Before You Answer

• Verify which piece in the drawing is the shaft sleeve and whether the stud and nut are directly contacting it or only contacting stationary parts • Confirm whether there are one or two shaft sections in this pump, or a single continuous shaft (this affects choice C) • Check where the packing gland is located and what fasteners are clearly holding it in place; compare those to the stud and nut in question

The stud and nut pictured just below "B" is used to __________. See illustration GS-0129.

prevent the shaft sleeve from sliding

hold the impeller onto the shaft

maintain the two shaft sections together during rotation

hold the packing gland in place

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🔍 Key Concepts

💭 Think About

✅ Before You Answer