About: http://webisa.webdatacommons.org/184715335

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	A massive guide about material selection with links at the bottom to just about everything else you would want to know about screws, including dimensions, installation torques, heat treatment, thread creation, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	curiousinventor.com