TopThread™ Catalogue Numbering System TopThread Boring Bar Identification System A25RNNT0R2 A 25 R N N T O R 2 Bar Bar Bar Insert Insert Insert Rake Hand of Tool Insert Type Diameter Length Holding Shape Location Angle Size Method 0 = 0° Steel N— End mount Right hand with coolant TopThread* W1 A E R Bar in millimetres Side mount Left hand *Proprietarystandard only. insertsizeW1 DDiiaa.. S L 2 3,81 3 4,95 4 6,98 Bars 5 9,65 K = 125,0mm M = 150,0mm 6 9,73 Q = 180,0mm 8 11,13 R = 200,0mm S = 250,0mm T = 300,0mm U = 350,0mm F30 widia.com