1236 Bolt dataHole sizes for ordinary bolts and friction grip connectionsNominal Clearance Oversize Short slotted Long slotteddiameter hole hole holesaholesa(mm) diameterbdiametera(mm) (mm)(mm) (mm)Narrow Slot Narrow Maximumdimension dimension dimension dimensionM12a14 17 14 18 14 30M16 18 21 18 22 18 40M20 22 25 22 26 22 50M22 24 27 24 28 24 55M24 26 30 26 32 26 60M27 30 35 30 37 30 67M30 33 38 33 40 33 75aHardened washers to be usedbIn cases where there are more than three plies in joint the holes in the inner plies should be one millimetrelarger than those in the outer pliesBolt strengthsBolt grade Steel grade4.6 8.8 S275 S355 S460Shear strength, ps(N/mm2) 160 375Bearing strength, pbb(N/mm2) 460 1000a460 550 670Tension strength, pt(N/mm2) 240 560aThe bearing value of the connected part is criticalBolt dataSteel Designers Manual (6th Edition) - Bolt dataDiscuss me ...Created on 02 March 2009This material is copyright - all rights reserved. Use of this document is subject to the terms and conditions of the Steelbiz Licence AgreementBolt data 1237Spacing, end and edge distances minimum values (see Fig. 23.1)Nominal Diameter of Minimum Edge distance to Edge distancediameter of clearance spacing rolled, sawn, planed, to shearedfastener hole (mm) or machine ame edge or hand(mm) (mm) cut edge ame cut edge(mm) and end distance(mm)M12 14 30 18 20M16 18 40 23 26M20 22 50 28 31M22a24 55 30 34M24 26 60 33 37M27a30 68 38 42M30 33 75 42 47aNon-preferred sizeMaximum centres of fastenersThickness Spacing in the Spacing in any directionof element direction of stress in corrosive environments(mm) (mm) (mm)5 70 806 84 967 98 1128 112 1289 126 14410 140 16011 154 17612 168 19213 182 20014 196 20015 210 200Steel Designers Manual (6th Edition) - Bolt dataDiscuss me ...Created on 02 March 2009This material is copyright - all rights reserved. Use of this document is subject to the terms and conditions of the Steelbiz Licence Agreement1238 Bolt dataMaximum edge distances (1)BS 4360 Thickness py(N/mm2) 11teagrade less than orequal to (mm)S275 16 275 1.0 11t40 265 1.02 11.21t63 255 1.04 11.44t80 245 1.06 11.65t100 235 1.08 11.90tS355 16 355 0.88 9.68t40 345 0.89 9.79t63 335 0.91 10.0t80 325 0.92 10.12t100 315 0.93 10.28tS460 16 460 0.77 8.47t40 440 0.79 8.69t63 430 0.80 8.80t80 410 0.82 9.02t100 400 0.83 9.13taThis rule does not apply to fasteners interconnecting the components of back-to-back tension membersThis table is expanded in the next table (Maximum edge distances (2))e = 2751 2pySteel Designers Manual (6th Edition) - Bolt dataDiscuss me ...Created on 02 March 2009This material is copyright - all rights reserved. Use of this document is subject to the terms and conditions of the Steelbiz Licence AgreementBolt data 1239Maximum edge distances (2)Thickness Corrosive Steel grade Steel grade Steel gradeof element t environment S275 S355 S460(mm) 40mm + 4t e = 11te e = 11te e = 11te(mm) (mm) (mm) (mm)5 60a55a48a42a6 64a66 58a51a7 68a77 67a598 72a88 77 68a9 76 99 87 7610 80 110 96 8511 84 121 106 9312 88 132 116 10213 92 143 125 11014 96 154 135 11915 100 165 145 12716 104 176 154 13620 120 224 196 17425 140 280 245 21730 160 336 294 26135 180 392 343 30440 200 448 392 34745 220 515 445 39650 240 572 501 44055 260 629 551 48460 280 686 601 52865 300 757 657 58670 320 816 708 63175 340 874 759 677aUse the lesser values for the appropriate grade of steelSteel Designers Manual (6th Edition) - Bolt dataDiscuss me ...Created on 02 March 2009This material is copyright - all rights reserved. Use of this document is subject to the terms and conditions of the Steelbiz Licence Agreement1240 Bolt dataBack marks in channel angesRSC Nominal ange Back Edge Recommendedwidth mark dist. diameter (mm) (mm) (mm) (mm)102 55 47 2489 55 34 2076 45 31 2064 35 29 1651 30 21 1038 22 Back marks in anglesNominal S1S2S3S4S5S6Nominal S1leg (mm) (mm) (mm) (mm) (mm) (mm) leg (mm)(mm) (mm)250 75 45 (20)200 75 (30) 75 (30) 55 (20) 55 (20) 55 (20) 70 40 (20)150 55 (20) 55 (20) 65 35 (20)125 45 (20) 50 (20) 60 35 (16)120 45 (16) 50 (16) 50 28 (12)100 55 (24) 45 2590 50 (24) 40 2380 45 (20) 30 2025 15Maximum recommended bolt sizes are given in bracketsThis table is reproduced from BCSA Publication No. 5/79, Metric Practice for Structural Steelworks, 3rd edn,1979.Steel Designers Manual (6th Edition) - Bolt dataDiscuss me ...Created on 02 March 2009This material is copyright - all rights reserved. Use of this document is subject to the terms and conditions of the Steelbiz Licence AgreementBolt data 1241Cross centres through angesFlange Minimum Maximum S1S2S3S4width for for (mm) (mm) (mm) (mm)(mm) accessibility edge dist.(mm) (mm)Joists44 27 (5) 30 3064 38 (10) 39 4076 48 (10) 51 4889 54 (12) 59 56102 60 (16) 62 60114 66 (16) 74 70127 72 (20) 77 75152 75 (20) 102 90203 91 (24) 143 140UCs152 65 (24) 92 90203 75 (24) 143 140254 87 (24) 194 140305 100 (24) 245 140 120 (24) 60 (24) 240 (24)368 88 (24) 308 140 140 (24) 75 (24) 290 (24)406 120 (24) 346 140 140 (24) 75 (24) 290 (24)UBs102 50 (16) 62 54127 62 (20) 77 70133 57 (20) 83 70140 69 (24) 80 70146 64 (24) 86 70152 73 (24) 92 90165 67 (24) 105 90171 72 (24) 111 90178 72 (24) 118 90191 74 (24) 131 90210 80 (24) 150 140229 80 (24) 169 140254 87 (24) 194 140267 91 (24) 207 140 90 (20) 50 (20) 190 (20)292 94 (24) 232 140 100 (24) 60 (24) 220 (24)305 100 (24) 245 140 120 (24) 60 (24) 240 (24)419 112 (24) 359 140 140 (24) 75 (24) 290 (24)Maximum bolt diameters for dimensions shown are given in bracketsSteel Designers Manual (6th Edition) - Bolt dataDiscuss me ...Created on 02 March 2009This material is copyright - all rights reserved. Use of this document is subject to the terms and conditions of the Steelbiz Licence Agreement