Page 689 - Mastik®

Tightening torques for Tightening torques for
®
®
flange screws and flange nuts VERBUS RIPP , INBUS RIPP ,
VERBUS TENSILOCK ®

®
®
Tightening torques MA [Nm] and achievable preload FM [Nm] for VERBUS RIPP screws and nuts and for INBUS RIPP screws, at
a 90% utilisation of the elongation limit Rp 0,2.
Class Counter Coefficient of
Tightening torques MA max. [Nm]
Material friction for μ ges.
M5 M6 M8 M10 M12 M14 M16
Steel
Screws – Rm ≥ 800 N/mm 2 0,13 to 0,16 10 18 37 80 120 215 310
Property class 100
Steel 0,12 to 0,18 11 19 42 85 130 230 330
Rm < 800 N/mm 2
Nuts –
Grey cast iron GG
Property class 10 0,125 to 0,16 9 16 35 75 115 200 300
Rm ~150-450 Nmm 2
Aluminum alloy
VERBUS RIPP ®
non heat threated 0,14 to 0,2 16 28 65 120 190 320 450
BN 2797, BN 9727
Aluminum alloy
0,13 to 0,18 14 25 55 100 160 275 400
heat threated
Preload force FM [kN]
9 12,6 23,2 37 54 74 102
Guideline values for achievable preload should be checked in field trials

M5 M6 M8 M10 M12
Screws – Steel 0,13 to 0,16 11 20 42 85 140
Property class 100 Rm ≥ 800 N/mm 2
Nuts – Steel 0,12 to 0,18 13 24 45 90 150
Rm < 800 N/mm 2
Property class 10
Grey cast iron GG
®
INBUS RIPP BN 3873 0,125 to 0,16 10 19 39 80 120
Rm ~150-450 Nmm 2
Preload force FM [kN]
9 12,6 23,2 37 54
Guideline values for achievable preload should be checked in field trials

Tightening torques MA [Nm] and achievable preload FM [Nm] for VERBUS TENSILOCK screws and nuts, at a 90% utilisation of
®
the elongation limit Rp 0,2.
Class Counter Coefficient of
Tightening torques MA max. [Nm]
Material friction for μ ges.
M5 M6 M8 M10 M12 M14 M16
Screws – Steel 0,16 to 0,22 9 16 34 58 97 155 215
Property class 90 Rm ~500 to 800 N/mm 2
Nuts – Grey cast iron GG 0,16 to 0,22 7 13 28 49 83 130 195
Property class 8 / 9 Rm ~150 to 450 Nmm 2
Preload force FM [kN]
BN 73
6,35 9 16,5 26,6 38,3 52,5 73
Guideline values for achievable preload should be checked in field trials