Reference number  
DRS 364 .: 2017 
© RBS yyyy 
© RSB 2017  
 1 RWANDA 
STANDARD                 
DRS 364   
            2017  
 
First edition  
2017 -00-00 
 
Nails specification  — Part 1: Steel nails   
 
 2 DRS  364: 2017 
©RSB 201 7 All rights  reserved                  ii 
 
 In order to match with technological development and to keep continuous p rogress in industries, 3 
technical specifications  are subject to periodic review. Users shall ascertain that they are in possession 4 
of the latest edition  5 
 
 
 
 
 
 
 
 
 
 
© RSB 2017 6 
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized 7 
in any form or by any means, electronic or mechanical, including photocopying and microfilm, without 8 
prior written permission from R SB. 9 
Requests for permission to reproduce this document should be addressed to  10 
Rwanda Standards  Board  11 
P.O Box 7099 Kigali -Rwanda  12 
Tel. +250 252 5861 03/582945  13 
E-mail: info@rsb.gov.rw  14 
Website: www.rsb.gov.rw  15 DRS 364 : 2017 
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 Contents  Page  16 
 17 
1 Scope  ................................ ................................ ................................ ................................ ......................  1 18 
2 Normative references  ................................ ................................ ................................ ............................  1 19 
3 Requirements  ................................ ................................ ................................ ................................ .........  2 20 
3.1 Materials and manufacture  ................................ ................................ ................................ ...................  2 21 
3.2 Workmanship  ................................ ................................ ................................ ................................ .........  2 22 
3.3 Finish  ................................ ................................ ................................ ................................ ......................  2 23 
3.4 Surface coating  ................................ ................................ ................................ ................................ ...... 2 24 
4 Dimensions and tolerances  ................................ ................................ ................................ ..................  3 25 
4.1 General  ................................ ................................ ................................ ................................ ...................  3 26 
4.2 Head diameter ( dh) ................................ ................................ ................................ ................................ . 3 27 
4.3 Shank diameter (dimension D) ................................ ................................ ................................ .............  3 28 
4.4 Length  ................................ ................................ ................................ ................................ .....................  4 29 
4.5 Nominal characteristic dimension, d ................................ ................................ ................................ ... 4 30 
5 Weights  ................................ ................................ ................................ ................................ ...................  4 31 
6 Packaging and labelling ................................ ................................ ................................ ........................  4 32 
7 Designation for ordering ................................ ................................ ................................ .......................  4 33 
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 Foreword  35 
Rwanda Standard s are prepared  by Technical Committees and approved by R wanda Standards Board (RSB) 36 
Board  of Directors in  accordance with the procedures of RSB, in compliance with Annex 3 of the WTO/TBT 37 
agreement on the pr eparation, adoption and application of standards.  38 
The main task of technical committees is to prepare national standards.  Final Draft Rwanda S tandards 39 
adopted by Technical committ ees are ratified by me mbers of RSB Board of Director s for publication and 40 
gazettment as Rwanda Standards.  41 
In other circumstances, particularly when there is an urgent need for such documents, Rwanda Standards 42 
Board may decide to publish technical specifications  to respond to either market or regulatory  needs .  A 43 
technical specifica tion represents an agreement of majority of  the members of a Technical Committee  and the 44 
document is subjected to review for improvement . 45 
DRS 364: 2017  was prepared by Technical Committee RSB/TC 23 , Mechanical Engineering and Metallurgy . 46 
In the preparation of this Technical Specification , reference was made to the following standard:  47 
BS 1202 -1:2002 , Specification for nails  — Part 1: Steel nails  48 
US 194 -1:2016 , Nails— Part 1: Steel nails — Specification  49 
The assistance de rived from the above source is hereby ack nowledged with thanks.  50 
Committee membership  51 
The following organizations were represented on the Technical Committee on Mechanical  Engineering and 52 
Metallurgy  RSB/TC 023 ) in the preparation of this standard.  53 
Association des Consomateurs au Rwanda (ADECOR)  54 
Rwanda  Standards Board  (RSB) – Secretariat  55 
56 DRS 364 : 2017 
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 57 DRS 364:  2017 
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 Nails specification — Part 1: Steel nails  58 
1 Scope  59 
This Draft Rwanda S tandard specifies requirements for preferred forms and dimensions , tolerances  on 60 
dimensions finish  and surface coating , for the types of steel  nails and of loose steel wire nails for general 61 
applications . 62 
This standard is applicable to the following types of nails:  63 
 64 
a) convex head roofing nails (chisel or diamond points)  65 
b) pipe nails (chisel point)  66 
c) hardboard panel pins (round shank)  67 
d) hardboard panel pins  (square shank)  68 
e) lath nails 69 
f) plasterboard nails (jagged shank)  70 
g) tile pegs  71 
h) tram nails with flat or raised head with chisel point  72 
i) square twisted shank flat head nails  73 
j) dowels  74 
k) tenter hooks  75 
l) annular ringed shank flat head nails  76 
m) helical threaded shank flat head nail s 77 
n) duplex head nails  78 
o) cut clasp nails  79 
p) cut floor brads  80 
2 Normative references  81 
The following referenced documents are indispensable for the application of this document. For dated 82 
references, only the edition cited applies. For undated references, the latest edi tion of the referenced 83 
document (including any amendments) applies . 84 
RS ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles — Specification and test  85 
ISO 22034 -2, Steel wire and wire products — Part 2: Tolerances on wire dimensions . 86  
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 3 Requirements  87 
3.1 Materials and manufacture  88 
3.1.1  Wire nails shall be made of mild steel and cut nails shall be made from black rolled steel.  89 
3.1.2  Nails manufactured in accordance  with this standard shall not be subjected to heat treatment after 90 
fabrication e xcept for that incurred during surface coating.  91 
3.2 Workmanship  92 
Nails shall be straight and true in shape. The head and tip should conform to the different nail geometries 93 
referred in table 1 -28 94 
3.3 Finish  95 
3.3.1  Oxidation  96 
The surface of all nails shall be free from exc essive oxidation.  97 
3.3.2  Wire nails.  98 
The finish of wire nails shall be one of the following:  99 
a) bright;  100 
b) galvanized;  101 
c) cement -coated (resin -coated);  102 
d) an alternative finish such as sherardized, cadmium plated or lead coated, as agreed between purchaser  103 
and supplier . 104 
3.3.3  Cut nails  105 
The finish of cut nails shall be one of the following : 106 
a) in the “as rolled” condition, except for those sides which are made bright by the cutting process;  107 
b) galvanized  108 
3.3.4  Galvanizing  109 
The coating of galvanized wire nails and galvanized cut nails shall com ply with the  requirements of RS ISO 110 
1461 except that the minimum coat weight shall be 300 g/m 2 at a maximum  Acceptable Quality Level (AQL) of 111 
10 % .  112 
3.4 Surface coating  113 
The surface of the wire nails shall comply with one of the following :  114 DRS 364:  2017 
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 a) uncoated; the surfac e of the nails shall be free from rust;  115 
b) zinc coated or zinc alloy coated, with a minimum zinc purity of 98.5 % in the outer surface of the coating, 116 
by one of the following alternatives:  117 
1) hot dipped to provide a minimum coating of 300 g/m 2 at an Acceptable  Quality Level (AQL) of 10 %;  118 
2) barrel coated to provide a minimum coating of 300 g/m 2 at an AQL of 10 % of nails with nominal 119 
characteristic dimensions greater than 2.6 mm;  120 
3) electroplated zinc coatings;  121 
4) other zinc or zinc alloy coating methods such as she radizing or mechanical zinc plating as agreed 122 
between purchaser and supplier;  123 
c) lacquered, cement coated or phosphate coated  124 
4 Dimensions and tolerances  125 
4.1 General  126 
The dimensions of nails shall be in accordance with Table 1  to 28 subject to  the tolerances given  in 4.1 to 4.4  127 
4.2 Head diameter ( dh) 128 
Tolerance for head diameter shall be ± 5% except for extra large head clout or felt nails, which have a 129 
minimum diameter  of 11 mm.  130 
4.3  Shank diameter (dimension D) 131 
The following tolerances shall apply to shank diameter for:  132 
a) Round wire nails :  133 
1) when diameter is less than 2.65 mm, ± 0.03 mm,  134 
2) when diameter is 2.65 mm and  more, ± 0.05 mm.  135 
b) Cut nails   136 
1) when not more than 50 mm in length, ± 0.10 mm;  137 
2) when over 50 mm and not more  than 100 mm in length, ± 0.15 mm;  138 
3) when over 100 mm in l ength, ± 0.20 mm.  139  
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 4.4 Length  140 
The following tolerances shall apply  141 
a) Wire nails  142 
1)  when diameter is less than 2.65 mm, ± 0.5 mm,  143 
2) when diameter is 2.65 mm and more,  ± 0.8 mm.  144 
b) Cut nails  145 
1) when not more than 50 mm in length, ± 1.0 mm;  146 
2) when over 50 mm and not more than  100 mm  in length, ± 1.5 mm;  147 
3) when over 100 mm in length, ± 2.0 mm.  148 
4.5 Nominal characteristic dimension, d 149 
The tolerance o n the nominal characteristic di mension applies to the nail shank before coating. The nominal 150 
characteristic dimension tolerances on nails  shall be T1 of ISO 22034 -2 151 
5 Weights  152 
The approximate number of bright nails and cut nails per kilogram is given, for general guidance only, in  Table 153 
1 to table 16.  154 
6 Packaging and labelling  155 
Nails are usually supplied in package by net weight or by an approxi mate number of nails.  The label or text 156 
on the package shall give the following:  157 
a) reference to this standard;  158 
b) type;  159 
c) length and nominal characteristic dimension;  160 
d) surface coating;  161 
e) weight or approximate number of nails; and  162 
f) name and address of manufactu rer  163 
7 Designation for ordering  164 
7.1 When designating steel nails in an enquiry or an order, the following information shall be given:  165 DRS 364:  2017 
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 a) quantity required by weight;  166 
b) type of nail ; 167 
c) finish required;  168 
d) length in millimetres;  169 
e) diameter or dimension D in millimetres;  170 
f) Rwanda  Standard reference number ; 171 
g) Surface coating . 172 
Table 1 — Dimensions and approximate count of convex roofing nails (chisel or diamond points)  173 
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 Table 2 — Dimensions and approximate count of convex roofing nails (chisel points)  177 
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Table 3 — Dimensions and approximate count of hardboard panel pins (round shank)  180 
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 Table 4 — Dimensions and approximate count of hardboard panel pins (square shank)  182 
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Table 5 — Dimensions and approximate count of lath nails  184 
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Table 6 — Dimensions and a pproximate count of plasterboard nails (Jagged shank)  186 
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Table 7 — Dimensions and approximate count of tile pegs  188 
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 Table 8 — Dimensions and approximate count of tram nails with flats or raised head and chisel point  190 
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 Table 9 — Dimensions and approximate  count of squared twisted shank flat head nails  193 
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Table 10 — Dimensions and approximate count of dowels  196 
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Table 11 — Dimensions and approximate count of tenterhooks  198 
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 Table 12 — Dimensions and approximate count of annular ringed shank flat head nails  200 
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 Table 13 — Dimensions and approximate count of helical threaded shank flat head nails  202 
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Table 14 — Dimensions and approximate count of duplex head nails  204 
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 Table 15 — Dimensions and approximate count of cut clasp nails  206 
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Table 16 — Dimensions and approximate count of cut clasp nails  208 
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 Table 17 — Dimensions for circular, flat, flat countersunk and cup head, plain shank nails  210 
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Dimensions in mm  212 
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 Table 18 — Dimensions for circular, flat and flat countersunk head, grooved shank nails  214 
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Dimension in mm  216 
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 Table 19 — Dimensions for circular, flat and flat countersunk head, square shank nails  218 
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Dimension in mm  220 
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Table 20 — Dimensions for lost round head, plain shank nails  222 
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Dimension in mm  224 
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 Table 21 — Dimensions for lost round head, grooved shank nails  226 
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Dimension in  mm 228 
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Table 22 — Dimensions for lost round head, plain shank nails  230 
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 Dimension in mm  236 
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Table 23 — Dimensions for clout head, plain shank nails  238 
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Dimension in mm  240 
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  242 
Table 24 — Dimensions for extra -large clout head nails  243 
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Dimension in mm  245 
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Table 25 — Dimensions for countersunk panel pin head, plain shank nails  247 
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1. 32o included angle.  249 
Dimension in mm  250 
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Table 26 — Dimensions for springhead, square twisted shank nails  252 
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  254 
1) d measured over the diagonals  255 
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Dimension in mm  257 
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Table 27 — Dimensions for washer hea d plain shank nails  259 
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Dimension in mm  261 
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Table 28 — Dimensions for lost oval head and brad oval head oval plain shank nails  264 
Lost oval head  265  
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 266 
Brad oval head  267 
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Dimension in mm  269 
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ICS 67.230  
 
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