Final answer:
Radial clearance for a close fit hole for a 1/4" bolt is minimal, providing ease of assembly with good alignment and little play. The exact clearance varies based on the fit class and cannot be precisely determined without specific engineering standards.
Step-by-step explanation:
The amount of radial clearance for a close fit hole for a 1/4" bolt typically relies on fit classifications defined by engineering standards. For close fit, the clearance is usually minimal, allowing for easy assembly while maintaining acceptable alignment without significant play between the parts. The standard clearance can vary depending on the exact specifications of the bolt and hole, such as the tolerance class. However, without the specific engineering standard or class of fit being referenced, it is impossible to provide the exact radial clearance for a 1/4" bolt.