Torx Size

harrisonm said

50, 60, 70, and 80 what? It isn't millimeters. Could it be 100s inch? So a 60 might be 60/100" or 6/10" or about 5/8 or about 15mm???

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None of the above. The numbers are meaningless.

Torx size and P to P (point to point) dimension:

T1 .031"
T2 .036"
T3 .046"
T4 .050"
T5 .055"
T6 .066"
T7 .078"
T8 .090"
T9 .098"
T10 .107"
T15 .128"
T20 .151"
T25 .173"
T27 .195"
T30 .216"
T40 .260"
T45 .306"
T50 .346"
T55 .440"
T60 .519"
T70 .610"
T80 .690"
T90 .784"
T100 .871"