® Spiral Mill - Thread Toolholders with internal coolant bore D D1 A L Insert Insert D D1 L No. of Screw Key Ordering Code Type size A Inserts SRH40-4 H40 37 40 32 180 4 S45S K40 SRH45-6 H45 37 45 32 130 6 S45 K40 with internal coolant bore D D1 A L Insert Insert D D1 L No. of Screw Key Ordering Code Type size A Inserts SRH32-5M H32 32 32 16 52 5 S32S K22 SRH45-6M H45 37 45 22 60 6 S45S K40 SRH63-9 H63 38 63 22 50 9 S63 K40 B04-10