1、BRITISH STANDARD BS 1574:1994 Specification for Split pins (inch series)BS1574:1994 This British Standard, having been prepared under the directionof the General Mechanical Engineering Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15March
2、1994 BSI 03-1999 The following BSI references relate to the work on this standard: Committee reference GME/9 Draft for comment 90/73145 DC ISBN 0 580 22779 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the General Mechanical Engineering
3、Standards Policy Committee (GME/-) to Technical Committee GME/9, upon which the following bodies were represented: BEAMA Ltd. British Constructional Steelwork Association Ltd. British Industrial Fasteners Federation British Steel Industry British Steel Industry (Wire Section) Gauge and Tool Makers A
4、ssociation Society of Motor Manufacturers and Traders Ltd. Washer Manufacturers Association of Great Britain The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Defence Manufacturers Association General Municipal Boilermaker and Allied Trades
5、 Union Screw Thread Tool Manufacturers Association Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBS1574:1994 BSI 03-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Normative references 1 3 Dimensions 1 4 F
6、orm and tolerance 1 5 Characteristics 1 6 Designation 1 Figure 1 Dimensions of inch split pins 4 Table 1 Dimensions of inch split pins 2 Table 2 Lengths of inch split pins 3 Table 3 Tolerance on length of inch split pins 4 Table 4 Characteristics of inch split pins 5 List of references Inside back c
7、overBS1574:1994 ii BSI 03-1999 Foreword This British Standard has been prepared under the direction of the General Mechanical Engineering Standards Policy Committee. It supersedes BS1574:1972, which is withdrawn. The principal changes that have been made in this edition are as follows. a) The deleti
8、on of metric sizes which are now specified in BS 7724:1994. b) The addition of the material characteristics for stainless steel, copper and brass from which inch series split pins may be manufactured. A British Standard does not purport to include all the necessary provisions of a contract. Users of
9、 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 and ii, pages1 to 6, an inside back cover and a back
10、cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.BS1574:1994 BSI 03-1999 1 1 Scope This British Standard specifies the characteristics of ferrous and non-ferrous split pins with
11、 inch dimensions and nominal diameter from 1 / 32inch to 1 / 2inch inclusive. 2 Normative references This British Standard incorporates, by reference, provisions from specific editions of other publications. These normative references are cited at the appropriate points in the text and the publicati
12、ons are listed on the inside back cover. Subsequent amendments to, or revisions of, any of these publications apply to this standard only when incorporated in it by updating or revision. 3 Dimensions The dimensions and tolerances of inch split pins shall be as given inTable 1 andTable 2 and Figure 1
13、. 4 Form and tolerance The tolerance of the split pin hole shall be H13, in accordance with BS4500-1.1:1990 and BS4500-1.2:1990. The eye of the pin shall approximate to the form shown inFigure 1. The length of the eye shall be the distance from the underside to the extreme outer surface of the eye a
14、nd shall conform to the dimensions given inTable 1. The closed legs of the shank shall form a circular cross section and be straight and parallel throughout the nominal length. The nominal length of pin shall be the distance of the eye to the extreme end of the short leg, i.e.the straight length of
15、the short leg (seeFigure 1). The tolerance on the length of inch split pins shall be as given inTable 3. 5 Characteristics The characteristics of inch split pins shall be as given inTable 4. 6 Designation When designating for the purposes of an enquiry or order, the following information shall be gi
16、ven: a) general product description, i.e.split pin; b) the number of this British Standard, i.e.BS1574:1994; c) the nominal diameter of the product in inches; d) the nominal length in inches; e) the material, i.e.stainless steel; f) details of the coating (if requested) and the relevant British Stan
17、dard, e.g.BS7371. Example: The designation of a steel split pin of nominal diameter 1 / 8 inch and nominal length1inch is as follows: BS1574:1994 1 / 8 1 steelBS1574:1994 2 BSI 03-1999 Table 1 Dimensions of inch split pins Dimensions in inches Nominal diameter ab d a R b c max. min. max. min. max. m
18、ax. c 1 / 32 3 / 64 1 / 16 5 / 64 3 / 32 ( 7 / 64 ) 1 / 8 ( 9 / 64 ) 5 / 32 ( 11 / 64 ) 3 / 16 ( 7 / 32 ) 1 / 4 ( 9 / 32 ) 5 / 16 3 / 8 ( 7 / 16 ) 1 / 2 0.031 0.046 0.062 0.077 0.093 0.108 0.124 0.140 0.155 0.171 0.186 0.218 0.249 0.280 0.311 0.373 0.436 0.498 0.024 0.035 0.051 0.067 0.083 0.101 0.1
19、06 0.132 0.138 0.161 0.173 0.208 0.224 0.270 0.287 0.358 0.421 0.476 0.06 0.10 0.10 0.10 0.10 0.10 0.10 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.25 0.25 0.25 0.03 0.05 0.05 0.05 0.05 0.05 0.05 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.12 0.12 0.12 0.002 0.004 0.006 0.006 0.008 0.008 0.010 0.011 0.0
20、12 0.013 0.016 0.016 0.020 0.021 0.024 0.028 0.033 0.038 0.09 0.11 0.12 0.16 0.19 0.22 0.25 0.28 0.31 0.34 0.38 0.44 0.50 0.56 0.62 0.75 0.87 1.00 0.062 0.092 0.124 0.154 0.186 0.216 0.248 0.280 0.310 0.342 0.372 0.436 0.498 0.560 0.622 0.746 0.872 0.996 a The nominal diameter is the diameter of the
21、 split pin hole. b The sizes shown in brackets are non-preferred. c No values are given in the table for the minimum eye diameter c but it shall not be less than 1.75 times the actual shank diameterd.BS1574:1994 BSI 03-1999 3 Table 2 Lengths of inch split pins Dimensions in inches Nominal length l N
22、ominal diameter a 1 / 32 3 / 64 1 / 16 5 / 64 3 / 32 ( 7 / 64 ) 1 / 8 ( 9 / 64 ) 5 / 32 ( 11 / 64 ) 3 / 16 ( 7 / 32 ) 1 / 4 ( 9 / 32 ) 5 / 16 3 / 8 ( 7 / 16 ) 1 / 2 1 / 4 3 / 8 1 / 2 5 / 8 3 / 4 7 / 8 1 1 1 / 8 1 1 / 4 Range of commerciallengths 1 3 / 8 1 1 / 2 1 5 / 8 1 3 / 4 1 7 / 8 2 2 1 / 4 2 1
23、/ 2 2 3 / 4 3 3 1 / 4 3 1 / 2 3 3 / 4 4 4 1 / 4 4 1 / 2 5 5 1 / 2 6 a The sizes shown in brackets are non-preferred.BS1574:1994 4 BSI 03-1999 Table 3 Tolerance on length of inch split pins NOTEFor dimension l see Table 2. Figure 1 Dimensions of inch split pins Dimensions in inches Nominal diameter T
24、olerance on length # 1 / 8 1 / 8# 1 / 4 1 / 4# 3 / 8 3 / 8 0.060 0.080 0.100 0.120BS1574:1994 BSI 03-1999 5 Table 4 Characteristics of inch split pins Material Ferrous Steel 0.15 % C max. Maximum UTS 620 N/mm 2 Stainless steel 0.15 % C max. 1.00 % Si max. 2.00 % Mn max. 0.045 % S max. 0.045 % P max.
25、 17/20 % Cr max. 7/11 % Ni max. Maximum UTS 620 N/mm 2 Non-ferrous Copper Hard condition for d # 1 / 4inch Annealed condition for d 1 / 4inch Brass 1 / 4hard condition for d # 3 / 8inch Annealed condition for d 3 / 8inch Surface finish Split pins shall be supplied in natural finish treated with a pr
26、otective lubricant, unless otherwise specified by agreement between customer and supplier. Workmanship Parts shall be uniform in quality and free of irregularities or detrimental defects. Acceptability The acceptance procedure is covered in BS 6587:1985.6 blankBS1574:1994 BSI 03-1999 List of referen
27、ces (see clause2) Normative references BSI publications BRITISH STANDARDS INSTITUTION, London BS 4500, ISO limits and fits. BS 4500-1, General tolerances and deviations. BS 4500-1.1:1990, Specification for bases of tolerances, deviations and fits. BS 4500-1.2:1990, Tables of commonly used tolerance
28、and grades and limits deviations for holes and shafts. BS 6587:1985, Method of acceptance inspection for fasteners. BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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