This specification establishes allowable limits for the various types of surface discontinuities such as cracks that may occur during the manufacture and processing of metric-series nuts and inch-series nuts. The different types of surface discontinuities and allowable limits are presented in details. The nuts shall be inspected for surface discontinuities to meet the requirements prescribed. Cone proof load test shall be performed to meet the requirements prescribed.
KeywordsGypsum Ceiling Boards - Nuts - Powder Coatings - Surface Defects
ICS CODE21.060.20 (Nuts)
UNSPSC CODE31161700 (Nuts)
ASTM F812-12(2017), Standard Specification for Surface Discontinuities of Nuts, Inch and Metric Series, ASTM International, West Conshohocken, PA, 2017, www.astm.org