ASTM F473-09(2017)

Standard Specification for Binding Mounting Area Dimensions on Alpine Skis and Bindings

ABSTRACT
This specification covers dimensions for binding mounting areas to be used in alpine skis and mounting-related dimensions on alpine ski bindings, in order to optimize the compatibility of the functional unit" ski-binding-retention device- boot." The area wherein parts of the binding may be mounted is defined. Standard dimensions and location for a binding mounting area enable a ski designer to locate reinforcing elements within this area. Standard dimensions also enable the binding designer to determine all interface dimensions for binding unit size, screw locations, etc.
SIGNIFICANCE AND USE
4.1 This specification defines the area wherein parts of the binding may be mounted. Standard dimensions and location for a binding mounting area enable a ski designer to locate reinforcing elements within this area. Standard dimensions also enable the binding designer to determine all interface dimensions for binding unit size, screw locations, etc. Bindings and skis built in compliance with this specification are compatible. This specification does not apply to any bindings or skis manufactured prior to Jan. 1, 1979.
SCOPE
1.1 This specification covers2 dimensions for binding mounting areas for alpine skis and mounting-related dimensions on alpine ski bindings as part of an interface (“ski-binding-boot”) system, in order to optimize the compatibility of the functional elements of the system. It contains data needed for the manufacture of alpine skis, and for manufacturers of alpine ski bindings, specifically with respect to the binding mounting area. This specification is applicable to alpine skis of the following chord lengths (see Terminology F472 for the definition of chord length, LN):    
Group 1: LN ≥ 1700 mm  
Group 2: 1400 mm ≤ LN    
Group 3: 1000 mm ≤ LN    
Group 4: 750 mm ≤ LN  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Aug-2017
• ICS: 97.220.20 - Winter sports equipment
• Technical Committee: F27 - Snow and Water Sports
• Drafting Committee: F27.30 - Skiing and Snowboarding Equipment

Relations

• Replaces: ASTM F473-09 - Standard Specification for Binding Mounting Area Dimensions on Alpine Skis and Bindings
• Effective Date: 01-Sep-2017
• Refers: ASTM F472-11 - Standard Terminology for Geometry of Alpine Skis
• Effective Date: 15-Jul-2011
• Refers: ASTM F472-92(2006) - Standard Terminology for Geometry of Alpine Skis
• Effective Date: 01-Oct-2006
• Refers: ASTM F472-92(1998) - Standard Terminology for Geometry of Alpine Skis
• Effective Date: 10-Aug-1998

Overview

ASTM F473-09(2017) is a standard specification developed by ASTM International that defines the binding mounting area dimensions on alpine skis and the related dimensions on ski bindings. The standard aims to optimize the compatibility of the ski-binding-boot system by establishing standardized dimensions and locations for mounting interfaces. This specification ensures functional and design compatibility between alpine skis and binding systems, providing a reliable foundation for ski and binding manufacturers to follow consistent practices, thus improving equipment safety and performance.

Key Topics

• Binding Mounting Area Definition: Specifies the exact portion of the ski’s top surface where ski bindings are to be mounted.
• Standardized Dimensions: Outlines acceptable lengths, widths, and locations for binding mounting areas for alpine skis with various chord lengths.
• Mounting Points: Requires a clearly visible mark indicating the intended mounting location on the ski, aligned with ski boot soles for accurate installation.
• Tolerances: Establishes acceptable measurement tolerances to ensure consistency across products.
• Screw Positioning: Details the maximum and minimum center-to-center distances for binding mounting screws, depending on ski group.
• Surface Profile Requirements: Specifies both transverse and longitudinal surface tolerances for the mounting area to facilitate proper binding installation.
• Minimum Thickness: Ensures the ski is thick enough at mounting areas to accommodate secure screw penetration, contributing to equipment durability and skier safety.

Applications

ASTM F473-09(2017) is widely used in the design, manufacturing, and quality assessment of alpine skis and ski bindings. Key applications include:

• Ski Manufacturing: Enables ski designers to strategically reinforce the mounting area of alpine skis according to precise, industry-accepted measurements, supporting product reliability and longevity.
• Binding Design: Provides binding manufacturers with the necessary interface dimensions for designing binding bases and setting screw hole locations, ensuring components are compatible with all compliant skis.
• Product Compatibility: Ensures that bindings and skis manufactured according to this standard can be used together interchangeably, simplifying purchasing decisions for retailers and end-users.
• Industry Standardization: Facilitates a common platform for manufacturers, reducing the risk of mismatched equipment and supporting global trade in ski equipment.
• Safety and Performance: Promotes secure attachment of bindings to skis, reducing the risk of failure or injury during use.

This standard is applicable to alpine skis with different chord lengths and must be followed when producing equipment manufactured after January 1, 1979. All values in the standard are stated in SI units to support international harmonization.

Related Standards

• ASTM F472: Terminology for Geometry of Alpine Skis, providing definitions for terms used in the context of ski and binding geometry.
• ISO 8364: International standard specifying requirements and test methods for binding mounting areas on alpine skis and bindings.
• ASTM F944 (Withdrawn): Specification for properties of adult alpine ski boots (for reference to historical compatibility).

By aligning with internationally recognized principles and related standards, ASTM F473-09(2017) plays a vital role in ensuring consistent quality, compatibility, and safety in the manufacturing and performance of alpine ski equipment.

Keywords: alpine skis, binding mounting area, ski bindings, screw depth, ski profile, compatibility, ASTM F473, binding dimensions, equipment safety

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F473 −09 (Reapproved 2017)
Standard Specification for
Binding Mounting Area Dimensions on Alpine Skis and
Bindings
ThisstandardisissuedunderthefixeddesignationF473;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.2 ISO Standard:
2 8364 Alpine Skis and Bindings—Binding Mounting Area—
1.1 This specification covers dimensions for binding
Requirements and Test Methods
mounting areas for alpine skis and mounting-related dimen-
sions on alpine ski bindings as part of an interface (“ski-
3. Terminology
binding-boot”) system, in order to optimize the compatibility
3.1 Definitions:
of the functional elements of the system. It contains data
3.1.1 binding mounting—all the connections between the
needed for the manufacture of alpine skis, and for manufac-
parts of the binding and the ski, especially those designed to
turers of alpine ski bindings, specifically with respect to the
transmit forces between binding and ski and that fulfill the
binding mounting area. This specification is applicable to
minimum strength requirements determined for the function of
alpine skis of the following chord lengths (see Terminology
the binding.
F472 for the definition of chord length, L ):
N
3.1.2 binding mounting area—that portion of the top surface
Group 1: L $ 1700 mm
N
Group 2: 1400 mm# L < 1700 mm
N of the ski that is intended for mounting bindings. The stan-
Group 3: 1000 mm# L < 1400 mm
N
dardized binding mounting area establishes the area on the ski
Group 4: 750 mm# L < 1000 mm
N
within which the entire diameter of binding screws should be
1.2 The values stated in SI units are to be regarded as
placed.
standard. No other units of measurement are included in this
standard.
4. Significance and Use
1.3 This international standard was developed in accor-
4.1 This specification defines the area wherein parts of the
dance with internationally recognized principles on standard-
bindingmaybemounted.Standarddimensionsandlocationfor
ization established in the Decision on Principles for the
a binding mounting area enable a ski designer to locate
Development of International Standards, Guides and Recom-
reinforcingelementswithinthisarea.Standarddimensionsalso
mendations issued by the World Trade Organization Technical
enable the binding designer to determine all interface dimen-
Barriers to Trade (TBT) Committee.
sions for binding unit size, screw locations, etc. Bindings and
skis built in compliance with this specification are compatible.
2. Referenced Documents
This specification does not apply to any bindings or skis
2.1 ASTM Standards:
manufactured prior to Jan. 1, 1979.
F472 Terminology for Geometry of Alpine Skis
5. Specifications of Binding Mounting Area
F944 Specification for Properties of Adult Alpine Ski Boots
(Withdrawn 2004)
5.1 Tolerances—Unless otherwise indicated, the tolerance
on all dimensions specified is 61 mm.
This specification is under the jurisdiction of ASTM Committee F27 on Snow
5.2 Indication of Mounting Point:
and Water Sports and is the direct responsibility of Subcommittee F27.30 on Skiing
5.2.1 The ski manufacturer shall be required to put a clearly
and Snowboarding Equipment.
visible mark at least on the left side or top surface, or both, of
Current edition approved Sept. 1, 2017. Published December 2017. Originally
approved in 1976. Last previous edition approved in 2009 as F473 – 09. DOI:
the ski, up to the left outer edge.This line corresponds with the
10.1520/F0473-09R17.
mark on the side surface of the boot sole, or when noted, to the
This specification is meant to conform in all significant aspects to the
boot sole toe location (see Specification F944).
specification for binding mounting area for alpine skis as set forth in ISO 8364.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute, 11 W. 42nd St., 13th
the ASTM website. Floor, New York, NY 10036.
The last approved version of this historical standard is referenced on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
www.astm.org. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F473 − 09 (2017)
5.2.2 The location of the mark on the ski shall be deter- 5.6.1.2 Thereshallbenostepintheprofilewithinawidthof
mined by the ski manufacturer in accordance with established the following, symmetrical to the longitudinal axis.
test procedures and results.
Groups 1 and 2: 55 mm
Groups 3 and 4: 50 mm
5.3 Length of Binding Mounting Area (see Fig. 1)—The
Outside the bind
...