1.1 This specification provides design, construction, and purchasing criteria for docking/drain plug and boss assemblies.
1.2 Assemblies are intended for installation in shell, rudder, and tank bottom plate from 5/16 through 11/2 in.
1.3 Assemblies shall be installed at the lowest point of a tank or rudder for draining during dry docking or cleaning of tanks.
1.4 The values stated in inch-pound units are to be regarded as the standard.
ASTM F991-86, Specification for Docking/Drain Plug and Boss Assemblies, ASTM International, West Conshohocken, PA, 1986, www.astm.orgBack to Top