SERIES 1TW7, 1TW8 HEAVY DUTY ROUGHING D1 D2 L1 L2 L3 D1 L1 L2 L3 D2 No. of Nom. Max. Depth Extension Overall Shank Effective Insert Cutter Number Dia. of Cut Length Length Size/Style Flutes Series 1TW7Q-0601379R01 0.625 0.47 1.38 4.75 .625“ Weldon 2 NBEU16 1TW8Q-06013S7R01 0.625 0.47 1.38 5.00 .750“ Cylind. 2 NBEU16 1TW8Q-06013S7R02 0.625 0.47 1.38 6.00 .750“ Cylind. 2 NBEU16 1TW7J-0702084R01 0.750 0.51 2.00 4.00 .750“ Weldon 2 NBEU19 1TW7J-0702084R02 0.750 0.51 2.00 6.00 .750“ Weldon 2 NBEU19 1TW8J-0701580R01 0.750 0.51 2.00 6.00 1.000“ Weldon 2 NBEU19 1TW8J-0701580R02 0.750 0.51 2.00 7.00 1.000“ Weldon 2 NBEU19 1TW7K-1002780R01 1.000 0.69 2.64 5.00 1.000“ Weldon 2 NBEU25 1TW7K-1002780R02 1.000 0.69 2.64 6.00 1.000“ Weldon 2 NBEU25 1TW8K-1001981R01 1.000 0.69 2.75 6.00 1.250“ Weldon 2 NBEU25 1TW8K-1001981R02 1.000 0.69 2.75 7.00 1.250“ Weldon 2 NBEU25 NBEU1603R NBEU1904R NBEU25T4R .269 .307 .402 .586 .118 .648 .146 .865 .177 Part Number Application IN2035 IN2504 IN2505 IN2530 IN4005 IN4030 NBEU1603R Center Cutting - n/a NBEU1904R Center Cutting - n/a NBEU25T4R Center Cutting - n/a HARDWARE Screw Driver Driver Torx Driver 1TW7Q-0601379R01 SM25-064-00 DS-T08S - - 1TW8Q-06013S7R01 SM25-064-00 DS-T08S - - 1TW8Q-06013S7R02 SM25-064-00 DS-T08S - - 1TW7J-0702084R01 SM30-072-00 - DS-T09W - 1TW7J-0702084R02 SM30-072-00 - DS-T09W - 1TW8J-0701580R01 SM30-072-00 - DS-T09W - 1TW8J-0701580R02 SM30-072-00 - DS-T09W - 1TW7K-1002780R01 SM35-087-70 - - DS-T15T 1TW7K-1002780R02 SM35-087-70 - - DS-T15T 1TW8K-1001981R01 SM35-087-70 - - DS-T15T 1TW8K-1001981R02 SM35-087-70 - - DS-T15T =P =M =K =N =S =H 100 Grades