1、BRITISH STANDARD CONFIRMED SEPTEMBER 1991 BS 16:1974 Incorporating Amendment No. 1 Specification for Telegraph material (insulators, pole fittings, etc.) UDC 621.394.7:621.315.6BS16:1974 This British Standard, having been approved by the Telecommunication Industry Standards Committee, was published
2、under the authority ofthe Executive Board on 31July1974 BSI 11-1999 First published August 1905 First revision January 1937 Second revision June 1949 Third revision July 1974 The following BSI references relate to the work on this standard: Committee reference TLE/7 Draft for comment 73/20175 DC ISB
3、N 0 580 08164 8 Co-operating organizations The Telecommunication Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government Departments and scientific and industrial organizations: British Broadcasting Corporati
4、on British Electrical and Allied Manufacturers Association British Electrotechnical Approvals Board for Household Equipment British Radio Equipment Manufacturers Association British Railways Board* Cama (BEAMA) Cable and Wireless Limited Crown Agents for Oversea Governments and Administrations Depar
5、tment of Employment (H.M. Factory Inspectorate) Department of Trade and Industry Electrical Contractors Association (Incorporated) Electrical Research Association Electricity Supply Industry in England and Wales Electronic Components Board Electronic Engineering Association Home Office Institution o
6、f Electrical Engineers Institution of Electronic and Radio Engineers Institution of Electrical and Electronics Technician Engineers Institution of Production Engineers Ministry of Defence Ministry of Defence, Army Department Ministry of Defence, Navy Department Ministry of Defence, Procurement Execu
7、tive Post Office* Radio and Electronic Component Manufacturers Federation Cable Television Association of Great Britain Science Research Council Radio and Space Research Station Scientific Instrument Manufacturers Association Society of British Aerospace Companies Telecommunication Engineering and M
8、anufacturing Association The industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committees entrusted with the preparation of this British Standard: British Ceramic Manufacturers Federation EEIA (BEAMA) Amendments issued s
9、ince publication Amd. No. Date of issue Comments 2168 November 1976 Indicated by a sideline in the marginBS16:1974 BSI 11-1999 i Contents Page Co-operating organizations Inside front cover Foreword iv 1 General 1 1.1 Scope 1 1.2 Definitions 1 1.3 General requirements 1 2 Galvanized bolts, nuts and w
10、ashers 1 2.1 Dimensions 1 2.2 Materials 1 2.3 Workmanship and finish 1 2.4 Tests 1 3 Stay swivels 5 3.1 Dimensions 5 3.2 Material 5 3.3 Workmanship and finish 5 3.4 Tests 5 4 Stay rods and stay tighteners 5 4.1 Dimensions 5 4.2 Material 5 4.3 Workmanship and finish 5 4.4 Tests 6 5 Tie bolts, distanc
11、e tubes and washers (plain and taper) 10 5.1 Dimensions 10 5.2 Material 10 5.3 Workmanship and finish 10 5.4 Tests 10 6 Arm combiners and braces 11 6.1 Dimensions 11 6.2 Material 11 6.3 Workmanship and finish 11 7 Brackets 14 7.1 Dimensions 14 7.2 Material 14 7.3 Workmanship and finish 14 7.4 Tests
12、14 8 Insulator spindles 24 8.1 Dimensions 24 8.2 Material 24 8.3 Workmanship and finish 24 8.4 Tests 24 9 Gauges for insulator thread on spindles 35 9.1 Dimensions 35 9.2 Material 35 9.3 Finish 35 10 Insulators 36 10.1 Material 36 10.2 Glazing 36 10.3 Colour 36BS16:1974 ii BSI 11-1999 Page 10.4 Form
13、 and dimensions 36 10.5 Marking 36 10.6 Acceptance tests 36 10.7 Gauge test (screw threads) 36 10.8 Insulation resistance test 36 10.9 Porosity test 37 10.10 Retest procedure 37 11 Gauges for insulators 42 11.1 Dimensions 42 11.2 Material 42 11.3 Finish 42 12 Pole steps 42 12.1 Material 42 12.2 Work
14、manship and finish 42 12.3 Dimensions 42 12.4 Marking 42 12.5 Tests 42 Figure 1 Galvanized bolts, nuts and washers 4 Figure 2 Galvanized bolts, nuts and washers 4 Figure 3 Stay swivels and thimbles 7 Figure 4 Stay rods and stay tighteners, patterns 1 and 2 8 Figure 5 Stay rod washers and plates 9 Fi
15、gure 6 Tie bolts, tubes and washers 12 Figure 7 Arm combiners and braces 13 Figure 8 BS bracket no. M 2 14 Figure 9 BS bracket no. M 3 15 Figure 10 BS bracket no. M 4 16 Figure 11 BS bracket no. M 5 17 Figure 12 BS bracket no. M 6 18 Figure 13 BS bracket no. M 6b (malleable cast iron) 19 Figure 14 B
16、S bracket no. M 7 (malleable cast iron) 20 Figure 15 BS bracket no. M 8 21 Figure 16 BS bracket no. M 9 21 Figure 17 BS bracket no. M 11 22 Figure 18 BS bracket no. M 12 23 Figure 19 BS spindles nos. M 1 and M 2 25 Figure 20 BS spindle no. M 11 26 Figure 21 BS spindle no. M 12 27 Figure 21(a) BS Spi
17、ndle no. M 13 28 Figure 21(b) BS Spindle no. M 14 29 Figure 22 BS spindle no. M 15 30 Figure 23 BS spindle no. M 21 31 Figure 24 BS spindle no. M 31 32 Figure 25 BS spindle no. M 32 33 Figure 26 BS spindle no. M 41 34 Figure 27 Curved washers for spindles 35 Figure 28 Gauges for threads on BS insula
18、tor spindles 38 Figure 29 BS insulator no. M 1 39BS16:1974 BSI 11-1999 iii Page Figure 30 BS insulator no. M 2 39 Figure 31 BS insulator no. M 7 40 Figure 32 BS insulator no. M 8 40 Figure 33 BS insulator no. M 16 41 Figure 34 Caps for BS insulator no. M 16 41 Figure 35 Gauges for threads on BS insu
19、lators 43 Figure 36 Gauges for BS insulator no. M 16 with detachable cap 44 Figure 37 Pole steps 45 Table 1a Dimensions and breaking load of bolts 2 Table 1b Dimensions of bolt heads, nuts and washers, BS sizes 320 M to 555 M 3 Table 1c Dimensions of bolt heads, nuts and washers, BS sizes 4065 M to
20、5235 M 3 Table 2 Dimensions and breaking load of stay swivels 5 Table 3 Dimensions of stay rods, eye bolts, bows and nuts 6 Table 4 Thimbles 9 Table 5 Stay rod washers 9 Table 6 Galvanized stay rod plates 10 Table 7 Tensile test on stay rods and stay tighteners 10 Table 8 Dimensions and tensile test
21、 for tie bolts 11 Table 9 Cantilever test requirements for insulator spindles 24 Table 10 Code references for standard dimensions X and Y for insulator spindles and associated nuts and washers 25 Publications referred to Inside back coverBS16:1974 iv BSI 11-1999 Foreword This is a revision of BS16:1
22、949, which was itself a revision of BS16:1937 incorporating standards developed as a result of consideration of war emergency designs. BS 16:1937 was a revision of part of the Interim Report published in1905 entitled “British Standard Specifications and Tables for Telegraph Material”. In this latest
23、 specification, proof load tests have been included on metal components containing welds. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not o
24、f itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi toiv, pages1to46, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be i
25、ndicated in the amendment table on the inside front cover.BS16:1974 BSI 11-1999 1 1 General 1.1 Scope This British Standard specifies dimensions, material, tests, workmanship and finish for insulators and pole fittings. The metric sizes have been so chosen that components may be used for replacement
26、 purposes. NOTEThe titles of the British Standards referred to in this standard are listed on the inside back cover. 1.2 Definitions For the purposes of this British Standard, the definitions in BS4727 apply. 1.3 General requirements 1.3.1 Quality of steel. Unless otherwise required, steel parts spe
27、cified in this standard shall be made to either grade43A of BS4360 or BS970-1, with metric values in BS970-6, or alternatively as agreed between the supplier and the purchaser. 1.3.2 Screw threads. Unless otherwise required, screw threads on bolts and other parts shall be formed after galvanizing; t
28、hey shall be to BS3643 coarse series, free fit. The threads shall be well oiled with an agreed grade of oil before the nuts or other items are fitted. The nuts shall be well fraised before galvanizing. Nuts and other parts with internal threads shall be tapped to BS3643 coarse series free fit after
29、galvanizing. Where the thread on bolts and other parts is to be galvanized, it shall be to BS3643 coarse series, free fit, before galvanizing. In this case, the nuts and other parts shall be tapped up to0.4mm oversize to suit the galvanized bolt or other threaded part. 1.3.3 Galvanizing. Where a par
30、t is required to be hot dip galvanized, such coatings shall comply with the requirements of BS729. 1.3.4 Dimensions. Unless otherwise specified, dimensions apply to parts after galvanizing. 2 Galvanized bolts, nuts and washers 2.1 Dimensions The bolts, nuts and washers shall comply in all respects w
31、ithTable 1a, Table 1b, andTable 1c and Figure 1 and Figure 2. The purchaser shall state at the time of ordering the number of washers required per bolt, if any. NOTEIt has been decided to retain square headed bolts and square nuts in this standard because they have been found to be most suitable for
32、 field usage. If for reasons of availability or cost it is preferred to use hexagon headed bolts and hexagon nuts, these should be to the dimensions given in BS4190. 2.2 Materials The bolts and nuts shall be of steel (as in1.3.1) and galvanized to the requirements of BS729. The material of the washe
33、rs shall be mild steel unless otherwise specified and they shall be galvanized to the requirements of BS729. 2.3 Workmanship and finish The bolts and nuts shall be well forged and free from inequalities, flaws and other defects. The heads shall be solid and in every respect well formed and shall not
34、 fail when the bolts are tested to fracture at their full section of tensile stress. The washers shall be cleanly cut off and punched, and shall be entirely free from cracks after punching. The screw threads shall be as specified in1.3.2. 2.4 Tests The finished bolts, when subjected to tensile test,
35、 shall comply with the breaking load requirements ofTable 1a. BS16:1974 2 BSI 11-1999 Table 1a Dimensions and breaking load of bolts NOTEIn the first column the letter M indicates that the bolt/nut combination is to metric dimensions. BS size no. Diameter of bolt D Length of bolt L Length of screw t
36、hread S Minimum breaking load mm mm mm kN 320 M 325 M 330 M 335 M 340 M 345 M 350 M 355 M 10 50 60 75 90 100 115 130 150 25 40 40 40 50 50 50 50 23 420 M 425 M 430 M 435 M 440 M 445 M 450 M 455 M 12 50 60 75 90 100 115 130 150 25 40 40 40 50 50 50 50 33 520 M 525 M 530 M 535 M 540 M 545 M 550 M 555
37、M 16 50 60 75 90 100 115 130 150 25 40 40 40 50 50 50 50 62 4065 M 4075 M 4085 M 175 200 225 4095 M 4105 M 4115 M 12 250 275 300 60 33 4125 M 4135 M 4145 M 325 350 375 5065 M 5075 M 5085 M 175 200 225 5095 M 5105 M 5115 M 250 275 300 5125 M 5135 M 5145 M 16 325 350 375 70 62 5155 M 5165 M 5175 M 400
38、 425 450 5185 M 5195 M 5205 M 475 500 525 5215 M 5225 M 5235 M 550 575 600BS 16:1974 BSI 11-1999 3 Table 1b Dimensions of bolt heads, nuts and washers BS sizes320M to555M (see Figure 1) Table 1c Dimensions of bolt heads, nuts and washers BS sizes 4065M to5235M (see Figure 2) Heads and nuts Round was
39、hers to BS 4320:1968 Form F Diameter Width across flats, heads and nuts Thickness Diameter of hole after galvanizing Outside diameter Thickness Heads Nuts D A B C W T mm max. min. max. min. max. min. mm mm mm mm mm mm mm mm mm 10 12 16 15.2 20.8 25.7 14.9 20.3 25.0 7.1 10.2 13.0 6.6 9.4 12.2 8.4 11.
40、7 15.2 7.9 10.9 14.2 12 14 18 24 30 34 2 2.5 3.0 Heads and nuts Washers Width across flats, heads and nuts Thickness Diameter of hole after galvanizing Neck Nut Diameter Heads Nuts Length Width Thickness Length Width Thickness D A B C V W T X Y Z max. min. max. min. max. min. mm mm mm mm mm mm mm mm
41、 mm mm mm mm mm mm 12 16 20.8 25.7 20.3 25.0 10.2 13.0 9.4 12.2 11.7 15.2 10.9 14.2 14 18 50 75 50 50 3 6 75 75 50 50 6 6BS 16:1974 4 BSI 11-1999 Figure 1 Galvanized bolts, nuts and washers (see Table 1a and Table 1b) Figure 2 Galvanized bolts, nuts and washers (see Table 1a and Table 1c)BS16:1974 B
42、SI 11-1999 5 3 Stay swivels 3.1 Dimensions The frames, eye-bolts, swivel eyes and thimbles shall comply in all respects with the requirements ofTable 2 and Table 4 and Figure 3. 3.2 Material The frames, eye-bolts, swivel eyes and thimbles shall be of steel to Grade43A of BS4360 or to an agreed alter
43、native to satisfy the breaking load required inTable 2, and galvanized to BS729. 3.3 Workmanship and finish 3.3.1 The frames, eye-bolts and swivel eyes shall be soundly made and free from defects. 3.3.2 The swivel eye shall be free to rotate in the frame. 3.3.3 Screw threads shall be as specified in
44、1.3.2. 3.3.4 Thimbles shall be closed on to eyes before galvanizing. 3.4 Tests The assembled swivels, when subjected to tensile load applied from eye to eye, shall comply with the requirements ofTable 2. Proof load tests (40% of breaking load) shall be performed on all swivels containing welded join
45、ts. Table 2 Dimensions and breaking load of stay swivels (see Figure 3) 4 Stay rods and stay tighteners 4.1 Dimensions The rods, eye-bolts, bows, ratchet nuts, thimbles and washers or plates shall comply in all respects withthedimensions specified inTable 3 (rods, eye-bolts and bows), Table 4 (thimb
46、les), Table 5 (washers), Table 6 (plates) andFigure 4 and Figure 5. All dimensions apply to the parts after galvanizing. 4.2 Material 4.2.1 The rods, eye-bolts and bows shall be of steel, suitable to give the strength required in4.4. Thecross-head may be made of forged mild steel, malleable cast iro
47、n or grey cast iron. 4.2.2 The thimbles, washers and plates shall be of mild steel. The ratchet nuts shall be of steel or malleable cast iron to BS309 or BS2789. 4.3 Workmanship and finish 4.3.1 The rods, eye-bolts and bows shall be soundly made and free from defects. 4.3.2 The sides of each assembl
48、y shall be well riveted into the cross-head and shall not draw when the assembly is tested to fracture by tensile loading. 4.3.3 The ratchet nuts and the ratchet face of each cross-head shall be well formed, so that any nut and any cross-head of the appropriate size shall provide a good ratchet acti
49、on. BS size no. mm A D a L b BS thimble c Breaking load (min.) min. max. min. Q R S mm mm mm mm mm mm mm kN 1 M 2 M 3 M 12 16 20 19 25 25 430 860 860 300 560 560 51 64 70 32 45 48 13 19 22 33 62 96 a The eye may be round or pear shaped. b The two values of L cover the range of adjustment (for inspection, the lower value is a maximum and the higher value is a minimum). L max. and L min. may be varied by agreement between the manufacturer and the purchaser.
