It's used to make burlap cloth, which is a coarse sacking material.
No. The coarse thread UNC screws will not thread into the fine thread UNF holes. UNC must be used with UNC and UNF with UNF.
Pocket holes typically require 1 1/4-inch coarse-thread screws for softwoods and 2 1/2-inch coarse-thread screws for hardwoods.
Coarse tacking thread.
It's thread which is thicker or heavier than others, or which has a rougher or more fibrous surface.
Is made of coarse tacking thread.
Wheel bearing won't have any threads. If your talking about the post they mount on, then you can use a pitch gage to get the number of threads per inch and then compare that to a thread chart to determine if they are coarse or fine.
UNC stands for "UNIFIED BOLT THREAD COARSE" UNF stands for " UNIFIED BOLT THREAD FINE"
University of North Carolina Unified National Coarse (Thread forming)
Coarse thread drywall screws have deeper and more widely spaced threads, providing better grip and holding power in softer materials like wood. Fine thread drywall screws have shallower and closer together threads, making them better suited for harder materials like metal studs.
He is right. A fine thread would be 1/2-20.
In the context of a hex bolt specification such as "5-16NC," the "NC" stands for National Coarse. This indicates the thread pitch of the bolt, specifically that it follows the National Coarse thread standard. National Coarse threads have fewer threads per inch compared to National Fine threads, making them better suited for applications where rapid assembly or disassembly is required.