Transcription of MARYLAND METRICS Technical Data Chart Standard …
1 MARYLAND METRICS Technical data ChartStandard tightening torque for metric screw threadsStandard tightening torque [N m] (Reference value)[N m] = Newton meter Nominal diameter T[N m] series[N m] series [N m] series [N m]M1 ( ) ( ) ( ) ( ) ( ) ( ) (M7) 422176100(M14) 6834122166M16 10653190255M18 14673270350M20 204102370490(M22) 282140500670M24 360180650860(M27) 5202609401240M30 70035012601700(M33) 96048017502300M36 124062022503000(M39) 160080029003800M42 2000100036004800(M45) 2500126045006000M48 2950150053007000(M52) 3800190068009200M56 48002400860011600(M60) 590029501060014000M64 720036001300017500(M68) 880044001600021000 Standard bolt stress: 210 [N/mm2 ] Stress area of bolt (JIS B 1082)Note: Conversion values rolled up to effective and applicable T seriesStandard T series series series series Applicable screws (Strengths) (*Material) ~ SS, SC, SUS Brass, Copper, ~ SCr, SNC, SCM ~ SCr, SNC, SCM, SNCM **Axial tension Standard value [N/mm2] Min - Max 210 300 ~ 160 105 150 ~ 80 380 540 ~ 290 500 710 ~ 380 Application To be applied to ordinary screws, unless otherwise specified Male and female screws with copper, aluminum or plastic, for die-cast plastic products Applicable products Ordinary products Electronic products Vehicles, Engines Construction products Note.
2 *material callouts are JIS (Japanese Standard )Basic data courtesy of Tohnichi Torque Handbook **The maximum to the minimum of the axial stress is considered as the dispersion of the torque coefficient. Example: max = 210 ( ) = 300 [N/mm2] Torque coefficient: (minimum) ~ (average) ~ (maximum) copyright 2013 MARYLAND METRICS ver jj24dDurable screw joints made of special steel including those affected by additional dynamic loads (Friction clamping)
