Astm D 3657 – 03 pdf free download

Standard Specification for
Zipper Dimensions1

This standard is issued under the fixed designation D 3657; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This specification establishes standard dimensions for
zippers of all materials for specified size designation; for
equivalency, in inch-pound and metric units, of zipper length
and length tolerances, tape width and width tolerances, and
of tape end lengths.

1.2 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
values from the systems may result in non-conformance with
the standard.

1.3 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.

2. Referenced Documents

2.1 ASTM Standards:2
D 123 Terminology Relating to Textiles
D 2050 Terminology Relating to Zippers
D 2060 Test Methods for Measuring Zipper Dimensions

3. Terminology

3.1 Definitions:

3.1.1 For definitions of zipper terms used in this standard,
refer to Terminology D 2050. For definitions of another textile
the terminology used in this standard refers to Terminology D 123.

4. Sampling

4.1 Sample the lot and select the number of specimens as
directed in Methods D 2060.

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