Machine Design
In order to obtain bolt of uniform strength

Tighten die bolt properly
Increase shank diameter
Drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread
Increase its length

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Machine Design
Tapered roller bearings can take

Both radial and axial loads and the ratio of these being less than unity
Axial load only
Both radial and axial loads and the ratio of these being greater than unity
Radial load only

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