Definition(s)
Loose Flange
Flange, as-manufactured, that is not intended to be made integral with equipment compliant to this International Standard. EXAMPLES Types of flanges include blind, threaded, spacer, welding neck, studded or other connected adapter flanges.
Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards