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Sutton D335 0350 3.5mm 8xD Solid Carbide Drill, AlCrN coated, Internal Coolant
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$262.21
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The Sutton D335 is an 8xD solid carbide (VHM) drill with internal coolant supply, a 30° right-hand helix (R30) and a 140° Form C point. It is AlCrN coated, has an HA shank to DIN 6535 and is for materials up to 1400 N/mm². This range has 92 sizes from 3 to 12 mm.
The strong core and the micro geometry and surface conditioning are designed for optimal chip control, and the internal coolant supply carries coolant to the cutting edges through the drill. The AlCrN finish is designed for maximum tool life. The drill diameter (d1) tolerance is m7 and the shank diameter (d2) tolerance is h6.
Where this product is used
- Deep-hole drilling to 8 × Ø with internal coolant, in toolroom, machine shop, production, maintenance and fabrication work.
- Materials up to 1400 N/mm², including steels, stainless steels and cast irons, with the material groups rated in the speed table below.
- Rated Optimal in the application guide: non-alloy steels; low-alloy steels; high-alloy and tool steels; ferritic and martensitic stainless steels; grey cast iron; nodular cast iron; malleable cast iron.
- Rated Effective: austenitic stainless steel.
- Hole depths to 8 × Ø. Step feeding or pecking is required beyond 3 × Ø.
Design features
- 8xD solid carbide drill with internal coolant supply.
- Strong core with micro geometry and surface conditioning for optimal chip control.
- AlCrN for maximum tool life.
- R30: 30° right-hand helix.
- 140° Form C point.
- HA shank to DIN 6535; d1 tolerance m7, d2 tolerance h6.
- For materials up to 1400 N/mm².
- 92 sizes from 3 to 12 mm.
Finish
AlCrN (aluminium chromium nitride) coating. AlCrN has a microhardness of 3200 HV and thermal stability up to about 1100 °C (2012 °F). It suits low-alloy and high-tensile steels, hardened steels up to 54 HRC, high-speed machining, and minimum quantity lubrication (MQL) or dry machining.
Sizes and item numbers
Every size in this range, with its Sutton item number. The inch column shows the fractional equivalent where the size has one. Lengths are in millimetres.
| Item no. | Ø d1 (mm) | Ø (in) | Overall length l1 (mm) | Flute length l2 (mm) | Shank d2 (mm) |
|---|---|---|---|---|---|
| D335 0300 | 3 | - | 72 | 34 | 6 |
| D335 0350 | 3.5 | - | 72 | 34 | 6 |
| D335 0420 | 4.2 | - | 81 | 43 | 6 |
| D335 0430 | 4.3 | - | 81 | 43 | 6 |
| D335 0460 | 4.6 | - | 81 | 43 | 6 |
| D335 0500 | 5 | - | 95 | 57 | 6 |
| D335 0510 | 5.1 | - | 95 | 57 | 6 |
| D335 0516 | 5.16 | 13/64 | 95 | 57 | 6 |
| D335 0520 | 5.2 | - | 95 | 57 | 6 |
| D335 0530 | 5.3 | - | 95 | 57 | 6 |
| D335 0540 | 5.4 | - | 95 | 57 | 6 |
| D335 0550 | 5.5 | - | 95 | 57 | 6 |
| D335 0556 | 5.56 | 7/32 | 95 | 57 | 6 |
| D335 0560 | 5.6 | - | 95 | 57 | 6 |
| D335 0570 | 5.7 | - | 95 | 57 | 6 |
| D335 0580 | 5.8 | - | 95 | 57 | 6 |
| D335 0590 | 5.9 | - | 95 | 57 | 6 |
| D335 0595 | 5.95 | 15/64 | 95 | 57 | 6 |
| D335 0600 | 6 | - | 95 | 57 | 6 |
| D335 0610 | 6.1 | - | 114 | 76 | 8 |
| D335 0620 | 6.2 | - | 114 | 76 | 8 |
| D335 0630 | 6.3 | - | 114 | 76 | 8 |
| D335 0635 | 6.35 | 1/4 | 114 | 76 | 8 |
| D335 0640 | 6.4 | - | 114 | 76 | 8 |
| D335 0650 | 6.5 | - | 114 | 76 | 8 |
| D335 0660 | 6.6 | - | 114 | 76 | 8 |
| D335 0670 | 6.7 | - | 114 | 76 | 8 |
| D335 0676 | 6.76 | 17/64 | 114 | 76 | 8 |
| D335 0680 | 6.8 | - | 114 | 76 | 8 |
| D335 0690 | 6.9 | - | 114 | 76 | 8 |
| D335 0700 | 7 | - | 114 | 76 | 8 |
| D335 0710 | 7.1 | - | 114 | 76 | 8 |
| D335 0714 | 7.14 | 9/32 | 114 | 76 | 8 |
| D335 0720 | 7.2 | - | 114 | 76 | 8 |
| D335 0730 | 7.3 | - | 114 | 76 | 8 |
| D335 0740 | 7.4 | - | 114 | 76 | 8 |
| D335 0750 | 7.5 | - | 114 | 76 | 8 |
| D335 0754 | 7.54 | 19/64 | 114 | 76 | 8 |
| D335 0760 | 7.6 | - | 114 | 76 | 8 |
| D335 0770 | 7.7 | - | 114 | 76 | 8 |
| D335 0780 | 7.8 | - | 114 | 76 | 8 |
| D335 0790 | 7.9 | - | 114 | 76 | 8 |
| D335 0794 | 7.94 | 5/16 | 114 | 76 | 8 |
| D335 0800 | 8 | - | 114 | 76 | 8 |
| D335 0810 | 8.1 | - | 142 | 95 | 10 |
| D335 0820 | 8.2 | - | 142 | 95 | 10 |
| D335 0830 | 8.3 | - | 142 | 95 | 10 |
| D335 0833 | 8.33 | 21/64 | 142 | 95 | 10 |
| D335 0840 | 8.4 | - | 142 | 95 | 10 |
| D335 0850 | 8.5 | - | 142 | 95 | 10 |
| D335 0860 | 8.6 | - | 142 | 95 | 10 |
| D335 0870 | 8.7 | - | 142 | 95 | 10 |
| D335 0873 | 8.73 | 11/32 | 142 | 95 | 10 |
| D335 0880 | 8.8 | - | 142 | 95 | 10 |
| D335 0890 | 8.9 | - | 142 | 95 | 10 |
| D335 0900 | 9 | - | 142 | 95 | 10 |
| D335 0910 | 9.1 | - | 142 | 95 | 10 |
| D335 0913 | 9.13 | 23/64 | 142 | 95 | 10 |
| D335 0920 | 9.2 | - | 142 | 95 | 10 |
| D335 0930 | 9.3 | - | 142 | 95 | 10 |
| D335 0940 | 9.4 | - | 142 | 95 | 10 |
| D335 0950 | 9.5 | - | 142 | 95 | 10 |
| D335 0953 | 9.53 | 3/8 | 142 | 95 | 10 |
| D335 0960 | 9.6 | - | 142 | 95 | 10 |
| D335 0970 | 9.7 | - | 142 | 95 | 10 |
| D335 0980 | 9.8 | - | 142 | 95 | 10 |
| D335 0990 | 9.9 | - | 142 | 95 | 10 |
| D335 0992 | 9.92 | 25/64 | 142 | 95 | 10 |
| D335 1000 | 10 | - | 142 | 95 | 10 |
| D335 1010 | 10.1 | - | 162 | 114 | 12 |
| D335 1020 | 10.2 | - | 162 | 114 | 12 |
| D335 1030 | 10.3 | - | 162 | 114 | 12 |
| D335 1032 | 10.32 | 13/32 | 162 | 114 | 12 |
| D335 1040 | 10.4 | - | 162 | 114 | 12 |
| D335 1050 | 10.5 | - | 162 | 114 | 12 |
| D335 1060 | 10.6 | - | 162 | 114 | 12 |
| D335 1070 | 10.7 | - | 162 | 114 | 12 |
| D335 1080 | 10.8 | - | 162 | 114 | 12 |
| D335 1090 | 10.9 | - | 162 | 114 | 12 |
| D335 1100 | 11 | - | 162 | 114 | 12 |
| D335 1110 | 11.1 | - | 162 | 114 | 12 |
| D335 1111 | 11.11 | 7/16 | 162 | 114 | 12 |
| D335 1120 | 11.2 | - | 162 | 114 | 12 |
| D335 1130 | 11.3 | - | 162 | 114 | 12 |
| D335 1140 | 11.4 | - | 162 | 114 | 12 |
| D335 1150 | 11.5 | - | 162 | 114 | 12 |
| D335 1160 | 11.6 | - | 162 | 114 | 12 |
| D335 1170 | 11.7 | - | 162 | 114 | 12 |
| D335 1180 | 11.8 | - | 162 | 114 | 12 |
| D335 1190 | 11.9 | - | 162 | 114 | 12 |
| D335 1191 | 11.91 | 15/32 | 162 | 114 | 12 |
| D335 1200 | 12 | - | 162 | 114 | 12 |
Cutting speeds and feeds
The application guide gives cutting speeds (Vc) and feed numbers for this drill, with Optimal ratings in bold and Effective ratings in regular type; the Rating column shows the same split. The rpm and feed columns show what the speed and feed number work out to at Ø6 mm and Ø10 mm (speed in rpm = Vc × 1000 ÷ (π × Ø)). Treat these as starting values and adjust for the machine, set-up and coolant.
| Material (VDI 3323 group) | Rating | Vc (m/min) | Feed no. | Ø6 mm: rpm / feed | Ø10 mm: rpm / feed |
|---|---|---|---|---|---|
| Non-alloy steel, about 0.15 %C, annealed (125 HB) | Optimal | 100 | 8 | 5,310 rpm / 0.24 mm/rev | 3,180 rpm / 0.37 mm/rev |
| Non-alloy steel, about 0.45 %C, annealed (190 HB) | Optimal | 100 | 8 | 5,310 rpm / 0.24 mm/rev | 3,180 rpm / 0.37 mm/rev |
| Non-alloy steel, about 0.45 %C, quenched and tempered (250 HB) | Optimal | 80 | 7 | 4,240 rpm / 0.19 mm/rev | 2,550 rpm / 0.3 mm/rev |
| Non-alloy steel, about 0.75 %C, annealed (270 HB) | Optimal | 80 | 7 | 4,240 rpm / 0.19 mm/rev | 2,550 rpm / 0.3 mm/rev |
| Non-alloy steel, about 0.75 %C, quenched and tempered (300 HB) | Optimal | 60 | 6 | 3,180 rpm / 0.16 mm/rev | 1,910 rpm / 0.24 mm/rev |
| Low-alloy and cast steel (under 5% alloying), annealed (180 HB) | Optimal | 80 | 7 | 4,240 rpm / 0.19 mm/rev | 2,550 rpm / 0.3 mm/rev |
| Low-alloy steel, quenched and tempered (275 HB) | Optimal | 80 | 7 | 4,240 rpm / 0.19 mm/rev | 2,550 rpm / 0.3 mm/rev |
| Low-alloy steel, quenched and tempered (300 HB) | Optimal | 60 | 6 | 3,180 rpm / 0.16 mm/rev | 1,910 rpm / 0.24 mm/rev |
| Low-alloy steel, quenched and tempered (350 HB) | Optimal | 30 | 5 | 1,590 rpm / 0.12 mm/rev | 955 rpm / 0.19 mm/rev |
| High-alloy, cast and tool steel, annealed (200 HB) | Optimal | 60 | 6 | 3,180 rpm / 0.16 mm/rev | 1,910 rpm / 0.24 mm/rev |
| High-alloy, cast and tool steel, hardened and tempered (325 HB) | Optimal | 30 | 5 | 1,590 rpm / 0.12 mm/rev | 955 rpm / 0.19 mm/rev |
| Corrosion-resistant steel, martensitic, quenched and tempered (240 HB) | Optimal | 30 | 5 | 1,590 rpm / 0.12 mm/rev | 955 rpm / 0.19 mm/rev |
| Austenitic stainless steel, age hardened (180 HB) | Effective | 45 | 5 | 2,390 rpm / 0.12 mm/rev | 1,430 rpm / 0.19 mm/rev |
| Grey cast iron, ferritic / pearlitic (180 HB) | Optimal | 90 | 8 | 4,770 rpm / 0.24 mm/rev | 2,860 rpm / 0.37 mm/rev |
| Grey cast iron, pearlitic (260 HB) | Optimal | 80 | 8 | 4,240 rpm / 0.24 mm/rev | 2,550 rpm / 0.37 mm/rev |
| Nodular cast iron, ferritic (160 HB) | Optimal | 70 | 7 | 3,710 rpm / 0.19 mm/rev | 2,230 rpm / 0.3 mm/rev |
| Nodular cast iron, pearlitic (250 HB) | Optimal | 70 | 7 | 3,710 rpm / 0.19 mm/rev | 2,230 rpm / 0.3 mm/rev |
| Malleable cast iron, ferritic (130 HB) | Optimal | 70 | 7 | 3,710 rpm / 0.19 mm/rev | 2,230 rpm / 0.3 mm/rev |
| Malleable cast iron, pearlitic (230 HB) | Optimal | 70 | 7 | 3,710 rpm / 0.19 mm/rev | 2,230 rpm / 0.3 mm/rev |
Feed rates (mm/rev) for the feed numbers above, by drill diameter:
| Ø (mm) | Feed no. 5 (mm/rev) | Feed no. 6 (mm/rev) | Feed no. 7 (mm/rev) | Feed no. 8 (mm/rev) |
|---|---|---|---|---|
| 2 | 0.05 | 0.06 | 0.075 | 0.095 |
| 3 | 0.07 | 0.09 | 0.11 | 0.135 |
| 4 | 0.09 | 0.115 | 0.14 | 0.18 |
| 5 | 0.11 | 0.135 | 0.17 | 0.21 |
| 6 | 0.125 | 0.16 | 0.19 | 0.24 |
| 8 | 0.16 | 0.2 | 0.25 | 0.31 |
| 10 | 0.19 | 0.24 | 0.3 | 0.37 |
| 12 | 0.23 | 0.28 | 0.34 | 0.42 |
Drilling notes
- Step feeding or pecking is required for drilling greater than 3 x Ø.
- When drilling a cast or black (not machined) surface, reduce the drilling speed by 20%.
- For optimal positional accuracy and hole size, the use of spot drills is recommended prior to drilling the desired hole; see Sutton's spotting drill range (D175).
- For hole depths greater than 7 x Ø, pre-drill a pilot hole first for more accurate hole position and to stop the drill wandering. The pilot can be drilled with a short, rigid drill about 3 x Ø deep at reduced feed.
Accuracy
The drill diameter (d1) tolerance is m7 and the shank diameter (d2) tolerance is h6.
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | D335 (8xD solid carbide drill, internal coolant) |
| Type | Solid carbide drill bit, IK internal coolant |
| Material | Solid carbide (VHM) |
| Finish | AlCrN (aluminium chromium nitride) coating |
| Flute geometry | R30: 30° right-hand helix |
| Point | 140° Form C |
| Standard | DIN 6537 |
| Shank | HA, DIN 6535 plain cylindrical |
| Drill diameter tolerance (d1) | m7 |
| Shank tolerance (d2) | h6 |
| Drilling depth | up to 8 × Ø |
| Suitable for materials | up to 1400 N/mm² |
| Sizes in this range | 92 sizes, 3 to 12 mm |
Related drilling products
Compare other Sutton solid carbide drills: D332 5xD through-coolant, D329 3xD through-coolant and D371 12xD. Browse all carbide drill bits. Need help choosing? Our drilling guides cover drill types and materials.
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