DRAFT UGANDA STANDARD  
  DUS 587 
Second  Edition  
2021 
 
 
 Reference number  
DUS 587: 2021 
© UNBS 2021  
  
Footwear — Determination of  spigot holding strength of ladies' 
plastics moulded heel top -pieces  
 DUS 587: 2021 
ii © UNBS 2021 – All rights reserved  
 Compliance with this standard does not, of itself confer immunity from legal obligations  
A Uganda Standard does not purport to include all necessary provisio ns of a contract. Users are 
responsible for its correct application  
© UNBS 20 21  
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Uganda  
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E-mail: unbs@infocom.co.ug  
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 DUS 587: 2021 
© UNBS 2020 – All rights reserved  iii 
 Foreword  
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade, Industry and 
Cooperatives established under C ap 327, of the Laws of Uganda, as amended.  UNBS is mandated to co -
ordinate the elaboration of standards and is  
(a) a member of International Organisation for Standardisation (ISO) and  
(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Sta ndards, and  
(c) the National Enquiry Point on TBT Agreement of the World Trade Organisation (WTO).  
The work of preparing Uganda Standards is carried out through Technical Committees. A Technical 
Committee is established to deliberate on standards in a given f ield or area and consists of key stakeholders 
including government, academia, consumer groups, private sector and other interested parties.  
Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the 
general pub lic for comments. The committee reviews the comments before recommending the draft standards 
for approval and declaration as Uganda Standards by the National Standards Council.  
The committee responsible for this document is Technical Committee UNBS/TC 7, Textiles, Leather, Paper 
and related products, Subcommittee SC 2, Leather and related products.  
This second edition cancels and replaces the first edition ( US 587 :2007), which has been revised:  
The document has been put in the new template for standard deve lopment as per the ISO/IEC Directives, Part 
2:2019  
 DRAFT UGANDA STANDARD  DUS 587: 2021 
 
© UNBS 2021 – All rights reserved  1 
 Footwear — Determination of  spigot holding strength of ladies'  
plastics moulded heel top -pieces  
1 Scope  
This draft Uganda S tandard specifies a method of  determining the spigot holding strength of ladies ' plastics 
moulded heel top -pieces.  
2 Normative References  
There are no normative references in this document.  
3 Terms and definitions  
ISO and IEC maintain terminological databases for use in standardization at the following addresses:  
— ISO Online browsi ng platform: available at http://www.iso.org/obp  
No terms and definitions are listed in this document.  
4 Apparatus  
4.1 Tensile -strength testing machine , fitted with vice grips, and set to move at a uniform rate of traverse 
of 100 mm/min.  
4.2 High tensile s teel wire  of nominal diameter 0 .9 mm and nominal length 300 mm.  
4.3 Drill of diameter , 1.0 mm  
5 Preparation of test specimens  
Take five heel top -pieces from the batch to be tested. Drill a hole in each front corner of each top -piece taking  
care to avoid th e spigot head (see Figure  1). So thread the wire through the holes such that a lo op is formed 
on the bottom side of the top -piece (see Figure  2). 
6 Procedure  
Clamp the spigot shaft in the bottom grip of the tensile -strength testing machine and clamp the en ds of the 
wire in the top grip. Set the machine in motion and record the maximum force required to pull the spigot head 
free from the top -piece.   
2 © UNBS 2021 – All rights reserved  
 7 Evaluation  
Calculate the mean of the results from the five test specimens and report th is as the spigot holdi ng strength.  
 
Figure 1 — Position of holes in top -piece  
 DUS 587: 2021 
© UNBS 2021 – All rights reserved  3 
 Figure 2 — Wire threaded in top -piece  
  
4 © UNBS 2021 – All rights reserved  
 Bibliography  
US 587 :2007 , Determination of s pigot holding strength of ladies' plastics moulded heel top -pieces  
 DUS 587: 2021 
© UNBS 2021 – All rights reserved  6 
 Certification marking  
Products that conform t o Uganda standards may be marked with Uganda National Bureau of Standards 
(UNBS) Certification Mark shown in the figure below.  
The use of the UNBS Certification Mark is governed by the Standards Act, and the Regulations made 
thereunder. This mark can be u sed only by those licensed under the certification mark scheme operated by 
the Uganda National Bureau of Standards and in conjunction with the relevant Uganda Standard. The 
presence of this mark on a product or in relation to a product is an assurance that  the goods comply with the 
requirements of that standard under a system of supervision, control and testing in accordance with the 
certification mark scheme of the Uganda National Bureau of Standards. UNBS marked products are 
continually checked by UNBS fo r conformity to that standard.  
Further particulars of the terms and conditions of licensing may be obtained from the Director, Uganda 
National Bureau of Standards.  
 
 DUS 587: 2021   
 
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