Tools > Drilling > Spotting Drill Bits & Sets | Sutton Tools 142 Carbide Spot Drill Bits | Descriptions | Drills, Carbide, Spotting | Precision drill for machine use | Rigid design for seat position accuracy | Dimensions | d1 (mm): 12 | d2 (mm): 12 | l1 (mm): 102 | l2 (mm): 24 | Pack Quantity: 1 | Features | 90 offers hole chamfering & spotting with the one tool | 142 for spotting, matching a typical carbide drill point | Only drill to the depth of the point | Specifications | Designation: NC | Material: VHM | Finish: Bright | Shank Form: HA | X: als | Point Tolerance: h6 | Shank Tolerance: h9 | Point Type: 142 Form A | Cutting Edges: ul | Standard: DIN 1897 | Applications | Optimal for Aluminum & Magnesium, wrought alloy - Non Heat Treatable 60 HB | Optimal for Aluminum & Magnesium, wrought alloy - Heat Treatable 100 HB | Optimal for Aluminum & Magnesium, cast alloy 12% Si - Non Heat Treatable 75 HB | Optimal for Aluminum & Magnesium, cast alloy 12% Si - Heat Treatable 90 HB | Optimal for Aluminum & Magnesium, cast alloy >12% Si - Non Heat Treatable 130 HB | Optimal for Copper & Copper alloys (Brass/Bronze) - Free cutting, Pb > 1 -110 HB | Optimal for Copper & Copper alloys (Brass/Bronze) - Brass (CuZn, CuSnZn) - 90 HB | Optimal for Copper & Copper alloys (Brass/Bronze) - Bronze (CuSn) 100 HB | Optimal for Non-metallic - Thermosetting & fiber-reinforced plastics