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AS
AS 4177.2-1994

AS 4177.2-1994

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Caravan and light trailer towing components - 50 mm towballs

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

30-06-2017

Superseded by

AS 4177.2-2004

Language(s)

English

Published date

01-01-1994

Publisher

Standards Australia

€32.89
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Hardcopy - English
PDF 1 User - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
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1 - AS 4177.2:1994 CARAVAN AND LIGHT TRAILER TOWING COMPONENTS - 50 MM TOWBALLS
4 - PREFACE
4 - CONTENTS
5 - 1 SCOPE
5 - 2 REFERENCED DOCUMENTS
5 - 3 DEFINITIONS
5 - 3.1 Aggregate trailer mass
5 - 3.2 Ball coupling
5 - 3.3 Coupling
5 - 3.4 Coupling body
5 - 3.5 Drawbar
6 - 3.6 Gross trailer mass
6 - 3.7 Light trailer (TB)
6 - 3.8 Shall
6 - 3.9 Shank-type towball
6 - 3. 10 Should
6 - 3.11 Towball
6 - 3.12 Towbar
6 - 3.13 Towing lug
6 - 3.14 Very light trailer (TA)
6 - 4 MECHANICAL PROPERTIES
6 - 5 DESIGN AND CONSTRUCTION
6 - 5.1 General
6 - 5.2 Shank type towballs
6 - 5.3 Dimensions for interchangeability
6 - 5.4 Methods of attachment
6 - 5.4.1 Means of retention
6 - 6 FINISH
6 - 6.1 Surface roughness
7 - 6.2 Corrosion protection
7 - 7 PERFORMANCE REQUIREMENTS
7 - 7.1 General
7 - 7.2 Static strength test
7 - 7.3 Dynamic strength test
7 - 8 MARKING
9 - APPENDIX A - STATIC STRENGTH TEST
9 - A1 SCOPE
9 - A2 PRINCIPLE
9 - A3 APPARATUS
9 - A4 PROCEDURE
9 - A5 REPORT
11 - APPENDIX B - DYNAMIC STRENGTH TEST
11 - B1 SCOPE
11 - B2 PRINCIPLE
11 - B3 APPARATUS
11 - B4 PROCEDURE
12 - B5 REPORT

Specifies design, standard dimensions with tolerances, method of attachment, finish and marking requirements for shank-type 50 mm towballs which are used on motor vehicles for towing trailers up to 3.5 t aggregate trailer mass. A static test for longitudinal loading in tension and compression, and a dynamic test are given in the appendices.

Committee
ME-052
DocumentType
Standard
ISBN
0 7262 8779 2
Pages
8
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes
UnderRevision

This Standard specifies requirements for motor vehicles towing very light and light trailers of up to 3.5 t aggregate trailer mass by means of a ball coupling, in normal use on sealed and unsealed roads.NOTES:1 Towbars and coupling bodies are specified in AS 4177.1 and AS 4177.3 respectively.2 Requirements for off-road applications are beyond the scope of this Standard.3 Requirements for shank-type 50 mm towballs only are specified.4 Towing bracket and towballs complying with ISO 1103 and 3853 are also acceptable.

First published as part of AS D18-1968.
Revised and redesignated in part as AS 4177.2-1994.

AS 4177.3-1994 Caravan and light trailer towing components Coupling body for ball couplings
AS 1443-1994 Carbon steels and carbon-manganese steels - Cold-finished bars
AS 2465-1981 Unified hexagon bolts, screws and nuts (UNC and UNF threads)
AS 2536-1982 Surface texture
AS 4177.1-1994 Caravan and light trailer towing components Towbars and towing brackets

AS 4177.3-1994 Caravan and light trailer towing components Coupling body for ball couplings
AS 1443-2004 Carbon and carbon-manganese steel - Cold finished bars (Reconfirmed 2022)
AS 4177.1-1994 Caravan and light trailer towing components Towbars and towing brackets
AS 1443-1994 Carbon steels and carbon-manganese steels - Cold-finished bars

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