Torx Size

69_340_GTS said
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"

We were just getting into T90's when I retired from the tool business a couple years ago although I never sold one. There's many different types of torx as well. Torx Plus and 5 Star as well as tamper proof torx and torx plus.