ASTM D3657-88(1998)e1
(Specification)Standard Specification for Zipper Dimensions
Standard Specification for Zipper Dimensions
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, of tape width and width tolerances, and of tape end lengths. Note 1-For other methods of evaluating zippers refer to the following ASTM methods: D2051, D2052, D2053, D2054, D2057, D2058, D2059, D2061, and D2062.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety problems, 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.
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e1
Designation: D 3657 – 88 (Reapproved 1998)
Standard Specification for
Zipper Dimensions
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 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.
e NOTE—Editorial changes were made throughout in November 1998
TABLE 1 Zipper Sizes
1. Scope
Slider Mouth Widths
Size
1.1 This specification establishes standard dimensions for
A
Designation
mm in.
zippers of all materials for specified size designation; for
equivalency, in inch-pound and metric units, of zipper length 1 and 2 up to 3.8 up to 0.150
3 and 4 over 3.8 to 5.7 over 0.150 to 0.225
and length tolerances, of tape width and width tolerances, and
5 and 6 over 5.7 to 7.0 over 0.225 to 0.275
of tape end lengths.
7, 8, 9, and 10 over 7.0 over 0.275
1.2 The values stated in either SI units or inch-pound units
A
Zipper sizes are grouped in this table because the trade buys zippers on an
are to be regarded separately as standard. The values stated in
end-use basis. For example, size 1 and 2 zippers are bought and used inter-
changeably. Each zipper industry member assigns the actual number that is
each system may not be exact equivalents; therefore, each
applicable for each particular product.
system shall be used independently of the other. Combining
values from the systems may result in non-conformance with
5. Dimensions and Permissible Variations
the standard.
5.1 Zippers shall conform to the dimensions listed in Tables
1.3 This standard does not purport to address all of the
1-4.
safety concerns, if any, associated with its use. It is the
5.2 Tables 2 and 3 include tolerances which represent trade
responsibility of the user of this standard to establish appro-
practice and are in common use. The tolerances are not uniform
priate safety and health practices and determine the applica-
between sizes because of differing requirements of the zippers
bility of regulatory limitations prior to use.
based on their normal end-use.
5.3 Table 2, within a size, has uniform plus tolerances.
2. Referenced Documents
Minus tolerances increase nonuniformly with increasing length
2.1 ASTM Standards:
2 because that is accepted trade practice based on the require-
D 123 Terminology Relating to Textiles
ments of the end products in which the zippers are installed.
D 2050 Terminology Relating to Zippers
2 5.3.1 Because zipper chain is composed of a series of
D 2060 Test Methods for Measuring Zipper Dimensions
elements with a prescribed pitch and each element must remain
3. Terminology complete to function, it is impossible to manufacture a zipper
deliberately to an exact stated length. Therefore a shipment of
3.1 Definitions:
zippers of a stated length will not likely average the stated
3.1.1 Table 1Table 2Table 3Table 4For definitions of zipper
length. Both the lot average length and the length of individual
terms used in this standard, refer to Terminology D 2050. For
zippers should fall within the tolerances in Table 2.
definitions of other textile terminology used in this standard
5.4 Table 4 shows the metric conversion for standard
refer to terms D 123.
inch-pound unit tape end lengths. Tape end length tolerances
4. Sampling are not shown due to widely varying end-use requirements and
inherent zipper manufacturing dimension variations. Toler-
4.1 Sample the lot and select the number of specimens as
ances to be observed should be agreed upon between purchaser
directed in Methods D 2060.
and supplier.
6. Test Methods
This specification is under the jurisdiction of ASTM Committee D-13 on
6.1 Size—Determine the zipper size as directed in the mouth
Textiles and is the direct responsibility of Subcommittee D13.54 on Subassemblies.
This specification was developed in cooperation with the Slide Fastener and Closure
width procedure of Test Methods D 2060.
Association.
6.2 Zipper Length—Determine the zipper length as directed
Current edition approved Feb. 26, 1988. Published April 1988. Originally
in the length of completely assembled zipper procedure of Test
published as D 3657 – 78. Last previous edition D 3657 – 82.
Annual Book of ASTM Standards, Vol 07.01. Methods D 2060.
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