ASTM International Standard Test Method for Resistance to Unsnapping of Snap Fasteners ASTM D4846-96(2016)

1.1 This test method covers the determination of the force required to disengage snap fasteners by a pull perpendicular to and parallel with the plane of the snap fastener. 1.2 This test method requires attachment of snaps to specimens using specifications provided by the producers of the snaps. 1.3 This test method is used to establish correlation to wear conditions and for comparing different brands and types of snap fasteners. 1.4 The values stated in SI units are to be regarded as the standard. The values stated in the parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.