BMT Mechanical nuts

Blackiron mechanical nuts are versatile and resistant and following the highest manufacturing standards. They allow to tension the bolts without the use of pressurized hydraulic oil. By tightening the jackbolts at a predefined force it will be possible to apply a residual load to the bolt itself. Available up to 6100 kN nom. preload, can be designed in special material upon request.

Metric Size TPI disponibili Nut body Jackbolt Hardened washer Height Weight Preload Torque Preload capacity
Thread 1 2 3 tot approx nom nom max
Part number D P1 P2 P3 D1 H n SW Ds S L F M
[M] [mm] [mm] [mm] [mm] [mm] [mm] [kg] [kN] [Nm] [kN]
BMTM016-XX 16 2 1,5 1 34 18 5 5 33 3 34 0,11 65 14 94
BMTM020-XX 20 2,5 1,5 1 38 18 7 5 38 4 35 0,14 98 14 140
BMTM022-XX 22 2,5 1,5 1 41 18 5 7 41 4 37 0,16 125 14 140
BMTM024-XX 24 3 2 1,5 44 18 6 7 44 4 37 0,19 145 14 185
BMTM027-XX 27 3 2 1,5 50 24 8 7 50 5 44 0,35 190 36 285
BMTM030-XX 30 3,5 2 1,5 53 24 9 7 53 5 44 0,37 230 36 285
BMTM033-XX 33 3,5 2 1,5 59 24 7 9 59 5 45 0,48 285 36 380
BMTM036-XX 36 4 3 1,5 66 32 8 9 66 6 56 0,76 335 72 460
BMTM039-XX 39 4 3 1,5 70 32 9 9 70 6 56 0,9 390 72 525
BMTM042-XX 42 4,5 3 1,5 75 38 7 11 73 6 65 1,01 455 72 585
BMTM045-XX 45 4,5 3 1,5 83 38 9 11 81 6 65 1,48 540 131 750
BMTM048-XX 48 5 3 1,5 85 38 9 11 85 6 65 1,5 585 131 750
BMTM052-XX 52 5 3 2 94 41 8 12 89 6 68 1,8 635 131 935
BMTM056-XX 56 5,5 4 2 100 41 9 12 95 8 70 2 710 131 935
BMTM060-XX 60 5,5 4 2 107 41 10 12 100 8 70 2,3 790 131 1170
BMTM064-XX 64 6 4 2 113 53 9 13 112 8 88 3,65 1040 315 1405
BMTM068-XX 68 6 4 2 117 53 10 13 117 8 88 3,85 1160 315 1565
BMTM072-XX 72 6 4 2 120 53 10 13 120 8 88 4 1160 315 1565
BMTM076-XX 76 6 4 2 132 56 13 15 127 8 90 5,1 1600 315 2340
BMTM080-XX 80 6 4 2 132 56 12 15 127 8 90 4,8 1790 315 2340
BMTM085-XX 85 6 4 2 137 56 12 15 137 8 90 5,1 1890 315 2340
BMTM090-XX 90 6 4 2 145 65 16 15 140 8 102 6 2300 315 3120
BMTM100-XX 100 6 4 2 164 65 16 15 160 8 102 7,8 2520 315 3120
BMTM110-XX 110 6 4 2 177 84 16 17 172 10 125 11,4 3110 645 3925
BMTM120-XX 120 6 4 2 189 84 18 17 179 10 125 13 3500 645 4660
BMTM125-XX 125 6 4 2 194 84 20 17 190 10 125 13,5 3890 645 4905
BMTM130-XX 130 6 4 2 205 94 22 17 202 10 137 17,5 4280 645 5395
BMTM140-XX 140 6 4 2 215 94 24 17 215 10 137 18,7 4670 645 5890
BMTM150-XX 150 6 4 2 225 107 24 19 225 12 162 20 6100 645 7000
BMTM160-XX 160 6 4 234 107 24 19 234 12 162 24,1 6100 645 7230

 

Special mechanical nuts available upon request, imperial sizes for instance
Special execution: custom dimensions available upon request
All dimensions may be subject to change without prior notification by the manufacturer