Metric Trapezoidal Threads

ISO 2901 & 2903 Class 7H. Used on metric locknuts size 44 and larger.



Recommended Shaft/Spindle Thread Dimensions

Major Dia Pitch Dia Minor Dia
Thread Size Pitch Max Min Max Min Max
TR220 4 220,000 219,700 217,810 217.469 215,500
TR240 4 240,000 239,700 237,810 237,469 235,500
TR260 4 260,000 259,700 257,810 257,469 255,500
TR280 4 280,000 279,700 277,810 277,469 275,500
TR300 4 300,000 299,700 297,810 297,469 295,500
TR320 5 320,000 319,665 317,288 316,906 314,500
TR340 5 340,000 339,665 337,288 336,916 334,500
TR360 5 360,000 359,665 357,288 356,916 354,500

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