About: http://webisa.webdatacommons.org/223050365

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	3 ??? Ease of producibility, it is stupid easy to access a bolt/hole in a c-channel. try reaching inside of a box frame to hold a nut, its just easier to make, one of the reasons you find welded nuts (easier to assemble parts).
http://www.w3.org/ns/prov#wasQuotedFrom	tundraheadquarters.com