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1、BRITISH STANDARD BS 1210:1963 Incorporating Amendment Nos. 1 and 2 Specification for Wood screws BS 1210:1963 This British Standard, having been approved by the Hardware and Ironmongery Industry Standards Committee and endorsed by the Chairman of the Building Divisional Council, was published under
2、the authority of the General Council on 4 July 1963 BSI 03-2000 First published February 1945 First revision May 1952 Second revision June 1963 The following BSI references relate to the work on this standard: Committee reference HIB/10 Draft for comment D62/9592 ISBN 0 580 35953 0 Co-operating orga
3、nizations The Hardware and Ironmongery Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Aluminium Federation* British Ironfounders Association B
4、ritish Lock and Latch Manufacturers Association British Plastics Federation British Waterworks Association Cast Butt Hinge Manufacturers Association Copper Development Association* D.S.I.R. Building Research Station Guild of Architectural Ironmongers Institution of Municipal Engineers London County
5、Council Metal Window Association, Ltd. Ministry of Public Building and Works National Brassfoundry Association National Federation of Builders and Plumbers Merchants* National Federation of Building Trades Employers* National Federation of Ironmongers* Royal Institute of British Architects* The Roya
6、l Institution of Chartered Surveyors Zinc Development Association The scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the Committee entrusted with the preparation of this British Standard: Amalgamated Societ
7、y of Woodworkers British Furniture Manufacturers Federated Associations D.S.I.R. Forest Products Research Laboratory Institute of Iron the screw industry is, therefore, considering the practicability of adopting the 5.65Area2) proportion. It is expected that in due course the International Organizat
8、ion for Standardization (ISO) will undertake work on the co-ordination of national standards for wood screws. 1) BS 18, “Tensile testing of metals”. 2) In BS 18:1962, the symbol S o is used to denote the original cross-sectional area of test section. BS 1210:1963 iv BSI 03-2000 NOTE 1Metric equivale
9、nts are given for the British units in this standard: the figures in British units are to be regarded as the standard. The metric conversions are approximate. More accurate conversions should be based on the tables in BS 350, “Conversion factors and tables”. NOTE 2In place of the customary but incor
10、rect use of the ton as a unit of force, the unit called the ton-force (abbreviation tonf) has been used in this standard. It is that force which, when acting on a body of mass one ton, gives it an acceleration equal to that of standard gravity. A British Standard does not purport to include all the
11、necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pa
12、ges 1 to 33 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. BS 1210:1963 BSI 03-20001 1 Scope This British Standard specifies requirements for slotted head wood sc
13、rews manufactured to the dimensions specified in Table 1, Table 8 and Table 14 from any of the materials specified in Clause 2. It also specifies a limited range of recessed head wood screws manufactured from steel and brass only to the dimensions specified in Table 20, Table 23 and Table 26. A meth
14、od of checking the recess penetration of recessed head wood screws is shown in Appendix B. 2 Material a) General. Wood screws are generally manufactured from cold-drawn wire. The mechanical tests shall be carried out on unmachined wire test pieces prior to the manufacture of the wood screws. Where w
15、ood screws are heat-treated see Clause 2 e) the mechanical tests shall be carried out on unmachined wire test pieces which have been heat-treated with the wood screws. All mechanical tests shall be carried out in accordance with BS 183) but in all cases the elongation shall be calculated on a gauge
16、length of 4 4). NOTESee third paragraph of the Foreword. b) Steel. The steel wire shall have the following mechanical properties: c) Brass. i) Chemical composition. The brass wire shall have the chemical composition of either alloy CZ108 or alloy CZ106 of BS 28735). ii) Mechanical properties. The br
17、ass wire shall have the following mechanical properties: d) Stainless steel. The stainless steel wire shall conform to any of the En58 series of specifications in BS 15546). e) Aluminium. The aluminium wire shall comply with Specification HB15 in BS 14737). The screws shall be fully heat-treated and
18、 the test pieces shall have the following mechanical properties: Aluminium wood screws for use involving exposure to severe corrosive conditions, in particular to the action of sea water, shall be made of aluminium wire complying with Specification NB6 in BS 14737). NOTEWood screws in NB6 alloy have
19、 a minimum tensile strength of 20 tonf/in2 (31 kgf/mm2) and require driving holes for successful use. Wood screws in this material are not as readily available as wood screws in HB15 alloy and may require to be specially made. f) Silicon bronze. i) Chemical composition. The silicon bronze wire shall
20、 have the chemical composition of alloy CS101 of BS 28738). ii) Mechanical properties. The silicon bronze wire shall have the following mechanical properties: g) Nickel-copper alloy. i) Chemical composition. The nickel-copper alloy wire shall have the chemical composition of alloy NA13 of BS 30759).
21、 3) BS 18, “Tensile testing of metals”. 4) In BS 18:1962, the symbol S o is used to denote the original cross-sectional area of the test section. Diameter Tensile strength (minimum) Elongation (minimum) tonf/in2kgf/mm2per cent Up to and including 16 screw gauge 355513 18 screw gauge and over 304713
22、5) BS 2873, “Schedule of copper and copper alloy wire”. Area Tensile strength (minimum) Elongation (minimum) tonf/in2kgf/mm2per cent 274315 6) BS 1554, “Rust, acid and heat resisting steel wire”. 7) BS 1473, “Wrought aluminium and aluminium alloys. Rivet, bolt and screw stock for forging”. 0.1 per c
23、ent proof stress (minimum) Tensile strength (minimum) tonf/in2kgf/mm2tonf/in2kgf/mm2 24382844 8) BS 2873 “Schedule of copper and copper alloy wires”. Tensile strength (minimum) Elongation (minimum) tonf/in2kgf/mm2 per cent 274315 9) BS 3075, “Nickel and nickel alloys: wire”. BS 1210:1963 2 BSI 03-20
24、00 ii) Mechanical properties. The nickel-copper alloy wire shall have the following mechanical properties: 3 Dimensions Slotted head wood screws shall conform to the dimensions and tolerances specified in Table 1, Table 8 and Table 14 and Clauses 4 and 5. Recessed head wood screws shall conform to t
25、he dimensions and tolerances specified in Table 20, Table 23 and Table 26 and Clauses 4 and 5. All wood screws shall be gimlet pointed and the heads shall be concentric with the shank. Slots and recesses shall be clean, free from burrs, and on visual inspection shall be central with the head. 4 Tole
26、rance on length The permissible tolerance on the nominal length of wood screws shall be as follows: Metric equivalents: 5 Threads Threads shall be clean and the depth of thread, measured at a distance of 11/2 2 nominal diameters from the point shall be not less than the following: 6 Standard sizes T
27、he standard sizes of slotted head wood screws shall be as specified in Table 2 to Table 7, Table 9 to Table 13 and Table 15 to Table 19 inclusive. The standard sizes of recessed head wood screws shall be as specified in Table 21, Table 22, Table 24, Table 25, Table 27 and Table 28. 7 Finish The vari
28、ous finishes, both protective and decorative, in which wood screws are supplied shall be as given in Appendix A. 8 Designation for ordering When designating wood screws for the purpose of an enquiry or an order, the following information shall be given: a) Material b) Style of head and whether slott
29、ed or recessed c) Length and diameter (in screw gauge), e.g. 11/2 in 8 s.g. d) British Standard number e) Details of plating required (if any) For example: i) Steel, slotted countersunk head wood screws, 11/2 in 8 s.g. to BS 1210. ii) Brass, recessed round head wood screws, 3/4 in 10 s.g. to BS 1210
30、, nickel-chromium plated. Tensile strength (minimum) Elongation (minimum) tonf/in2kgf/mm2per cent 325030 Nominal length Tolerance on length inin 1/8 up to and including 3/16 + 0 0.015 Above 3/16 up to and including 5/16+ 0 0.020 Above 5/16 up to and including 3/4+ 0 0.025 Above 3/4 up to and includi
31、ng 11/2+ 0 1/32 Above 11/2 up to and including 21/2+ 0 3/64 Above 21/2+ 0 1/16 Nominal length Tolerance on length mmmm 3 up to and including 4.75+ 0 0.4 Above 4.75 up to and including 8+ 0 0.5 Above 8 up to and including 19+ 0 0.6 Above 19 up to and including 38+ 0 0.8 Above 38 up to and including 6
32、4+ 0 1.2 Above 64+ 0 1.6 Size of screw Depth of thread (minimum) Size of screw Depth of thread (minimum) Screw gaugeinmmScrew gaugeinmm 0 1 2 0.008 0.009 0.010 0.20 0.23 0.25 10 12 14 0.026 0.030 0.034 0.66 0.76 0.86 3 4 5 0.012 0.013 0.016 0.30 0.33 0.41 16 18 20 0.038 0.041 0.045 0.97 1.04 1.14 6
33、7 8 9 0.018 0.020 0.022 0.024 0.46 0.51 0.56 0.61 24 28 32 0.053 0.061 0.069 1.35 1.55 1.75 BS 1210:1963 BSI 03-20003 Table 1 Slotted countersunk head wood screws (for standard sizes, see Table 2 to Table 7) Figure 1 123456789101112 Size of screw and diameter of unthreaded shankNumber of threads per
34、 inch Diameter of head Depth of head Cb Slot Screw gauge D Va BWidth S Depth Nc Nom.Max.Min.Max.Min.Max.Max.Min.Nom. inininininininininin 0 1 2 0.060 0.070 0.082 0.061 0.073 0.085 0.058 0.067 0.078 30 28 26 0.126 0.147 0.174 0.120 0.140 0.164 0.114 0.133 0.156 0.035 0.041 0.048 0.023 0.028 0.033 0.0
35、16 0.021 0.026 0.017 0.019 0.021 3 4 5 0.094 0.108 0.122 0.097 0.113 0.127 0.090 0.104 0.117 24 22 20 0.199 0.230 0.261 0.188 0.216 0.244 0.179 0.205 0.232 0.055 0.064 0.073 0.038 0.040 0.045 0.030 0.032 0.035 0.024 0.026 0.032 6 7 8 0.136 0.150 0.164 0.141 0.155 0.169 0.131 0.145 0.159 18 16 14 0.2
36、91 0.323 0.353 0.272 0.300 0.328 0.258 0.285 0.312 0.082 0.091 0.100 0.050 0.050 0.055 0.040 0.040 0.045 0.036 0.039 0.042 9 10 12 0.178 0.192 0.220 0.183 0.197 0.225 0.173 0.186 0.212 12 12 10 0.384 0.414 0.476 0.356 0.384 0.440 0.338 0.365 0.418 0.109 0.117 0.135 0.055 0.060 0.065 0.045 0.050 0.05
37、5 0.045 0.047 0.053 14 16 18 0.248 0.276 0.304 0.253 0.281 0.309 0.238 0.266 0.294 9 8 71/2 0.538 0.599 0.660 0.496 0.552 0.608 0.472 0.524 0.578 0.153 0.170 0.188 0.075 0.075 0.085 0.065 0.065 0.075 0.058 0.069 0.074 20 24 28 0.332 0.388 0.444 0.337 0.393 0.449 0.322 0.378 0.434 7 6 51/2 0.721 0.84
38、5 0.967 0.664 0.776 0.888 0.631 0.737 0.844 0.205 0.241 0.276 0.085 0.095 0.105 0.075 0.085 0.095 0.079 0.090 0.101 320.5000.5050.49051.0881.0000.9500.3100.1050.0950.112 a The dimensions for “V” are the theoretical diameters of head to sharp corners and are given for design purposes only. b The maxi
39、mum depth of head “C” on a nominal size shank is given for the convenience of users only. c The dimension “N” is measured from the top of the head to the point at which the slot breaks through. BS 1210:1963 4 BSI 03-2000 TABLE 1M Metric equivalents of Table 1 NOTEThe metric conversions are approxima
40、te; the figures in British units in Table 1 are to be regarded as the standard. 123456789101112 Size of screw and diameter of unthreaded shank Number of threads per cm Diameter of head Depth of head Cb Slot Screw gauge D Va BWidth SDepth Nc Nom.Max.Min.Max.Min.Max.Max.Min.Nom. mmmmmmmmmmmmmmmmmmmm 0
41、 1 2 1.52 1.78 2.08 1.55 1.85 2.16 1.47 1.70 1.98 12 11 10 3.20 3.73 4.42 3.05 3.56 4.17 2.90 3.38 3.96 0.89 1.04 1.22 0.58 0.71 0.84 0.41 0.53 0.66 0.43 0.48 0.53 3 4 5 2.39 2.74 3.10 2.46 2.87 3.23 2.29 2.64 2.97 91/2 81/2 8 5.05 5.84 6.63 4.78 5.49 6.20 4.55 5.21 5.89 1.40 1.63 1.85 0.97 1.02 1.1
42、4 0.76 0.81 0.89 0.61 0.66 0.81 6 7 8 3.45 3.81 4.17 3.58 3.94 4.29 3.33 3.68 4.04 7 61/2 51/2 7.39 8.20 8.97 6.91 7.62 8.33 6.55 7.24 7.92 2.08 2.31 2.54 1.27 1.27 1.40 1.02 1.02 1.14 0.91 0.99 1.07 9 10 12 4.52 4.88 5.59 4.65 5.00 5.72 4.39 4.72 5.38 41/2 41/2 4 9.75 10.52 12.09 9.04 9.75 11.18 8.
43、59 9.27 10.62 2.77 2.97 3.43 1.40 1.52 1.65 1.14 1.27 1.40 1.14 1.19 1.35 14 16 18 6.30 7.01 7.72 6.43 7.14 7.85 6.05 6.76 7.47 31/2 3 3 13.67 15.21 16.76 12.60 14.02 15.44 11.99 13.31 14.68 3.89 4.32 4.78 1.91 1.91 2.16 1.65 1.65 1.91 1.47 1.75 1.88 20 24 28 8.43 9.86 11.28 8.56 9.98 11.40 8.18 9.6
44、0 11.02 21/2 21/2 2 18.31 21.46 24.56 16.87 19.71 22.56 16.03 18.72 21.44 5.21 6.12 7.01 2.16 2.41 2.67 1.91 2.16 2.41 2.01 2.29 2.57 3212.7012.8312.45227.6425.4024.137.872.672.412.84 a The dimensions for “V” are the theoretical diameters of head to sharp corners and are given for design purposes on
45、ly. b The maximum depth of head “C” on a nominal size shank is given for the convenience of users only. c Dimension “N” is measured from the top of the head to the point at which the slot breaks through. BS 1210:1963 BSI 03-20005 Table 2 Standard sizes of steel slotted countersunk head wood screws L
46、engthScrew gauge inmm 3/16 4.81 1/4 6.4 012345 5/16 7.9123456 3/8 9.5 012345678 7/16 11.146 1/2 12.7 012345678910 5/9 15.91234567891012 3/4 19.123456789101214 7/8 22.23456789101214 125.42345678910121416 11/431.84567891012141618 11/238.1456789101214161820 13/444.54567891012141618 250.8456789101214161
47、820 21/457.2678910121416 21/263.56789101214161820 23/469.96810121416 376.26789101214161820 31/482.6101214 31/288.981012141618 4101.68101214161820 41/2114.31012141620 5127.0101214161820 6152.412141618 Preferred standard sizes, in bold type, should be used whenever possible, as they are the sizes norm
48、ally stocked. Supplementary standard sizes, in light type, are less likely to be obtained from local stockists than the preferred standard sizes shown in bold type. BS 1210:1963 6 BSI 03-2000 Table 3 Standard sizes of brass slotted countersunk head wood screws LengthScrew gauge inmm 1/4 6.4 0 12346
49、5/16 7.9 01234 3/8 9.5 01234568 1/2 12.7 01234567810 5/8 15.92345678910 3/4 19.1234567891012 7/8 22.24567891012 125.43456789101214 11/431.845678910121416 11/238.14567891012141618 13/444.56789101214 250.856789101214161820 21/457.28910121416 21/263.56891012141618 23/469.9812 376.28101214161820 31/288.91012141620 4101.61012141620 Preferred standard sizes, in bold type, should be used whenever possible, as they are the sizes normally stocked. Supplementary standard sizes, in light type, are less likely to be obtained from local stockists than