A clearance hole in machining serves an important purpose.
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assumption.udalton.7999
Sep 19
Clearance refers to the space between a machined part and a fastener or pin that will be inserted into it. The clearance hole is larger than the nominal size of the fastener/pin. It provides room for the assembly/disassembly of the parts. The extra clearance allows the fastener to move freely in and out of the hole during assembly/disassembly without binding. It reduces wear and tear on the parts. With proper clearance, the fastener won't rub tightly against the sides of the hole during operation or assembly/disassembly, minimizing friction and potential galling/wear. Standardized tables provide recommended metric clearance hole sizes for bolts, screws, pins, and dowels based on their nominal diameters, anticipated loads, vibration/sliding conditions, and other factors.
Clearance refers to the space between a machined part and a fastener or pin that will be inserted into it. The clearance hole is larger than the nominal size of the fastener/pin. It provides room for the assembly/disassembly of the parts. The extra clearance allows the fastener to move freely in and out of the hole during assembly/disassembly without binding. It reduces wear and tear on the parts. With proper clearance, the fastener won't rub tightly against the sides of the hole during operation or assembly/disassembly, minimizing friction and potential galling/wear. Standardized tables provide recommended metric clearance hole sizes for bolts, screws, pins, and dowels based on their nominal diameters, anticipated loads, vibration/sliding conditions, and other factors.