Sutton 1mm D177 DXS Stub Drill Bit - Metric - Cobalt TiAlN
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The Sutton D177 is a DXS stub drill (designation WN) made from 5% cobalt high speed steel (HSS-Co) with a TiAlN coating. It has 35° right-hand helix flutes (R35), a 130° Form A point and a straight shank, d1 to h8, and is made to DIN 1897.
It is a high performance stub drill for materials up to 850 N/mm². The special point geometry has radius cutting lips, which produce short chips, and the TiAlN coating is for longer tool life.
This range has 118 sizes from 1 to 20 mm, with flute lengths of 6 to 66 mm and overall lengths of 26 to 131 mm.
Where this product is used
- Shallow, rigid drilling on CNC machines and drill presses, where the short stub length keeps the drill stiff.
- Materials up to 850 N/mm².
- Materials where short chips are wanted, using the radius cutting lips on the special point.
- Materials rated Optimal for this drill: wrought aluminium and magnesium alloys; and cast aluminium and magnesium alloys (up to 12% Si).
- Also rated Effective: annealed high-alloy and tool steel; austenitic stainless steel; duplex stainless steel; precipitation-hardening stainless steel; aluminium and magnesium cast alloys over 12% Si; and thermosetting and fibre-reinforced plastics.
- Rated Optimal for some grades and Effective for others: non-alloy steels; low-alloy steels; and copper alloys, brass and bronze.
- Hole depths up to 3 × Ø. Step feeding or pecking is required beyond 3 × Ø.
Finish
Titanium aluminium nitride (TiAlN) has a microhardness of 3300 HV and is stable to about 900 °C (1652 °F). It is used on abrasive and difficult-to-machine materials such as stainless steel, at higher speeds and feeds, and with reduced or no coolant.
Cutting speeds and feeds
Cutting speeds (Vc) and feed numbers for this drill come from the Sutton High Performance catalogue application guide, which lists 21 material groups for this drill. The guide prints Optimal ratings in bold and Effective ratings in regular type, and the table below keeps that 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 | 35 | 4 | 1,860 rpm / 0.1 mm/rev | 1,110 rpm / 0.16 mm/rev |
| Non-alloy steel, about 0.45 %C, annealed (190 HB) | Optimal | 30 | 4 | 1,590 rpm / 0.1 mm/rev | 955 rpm / 0.16 mm/rev |
| Non-alloy steel, about 0.45 %C, quenched and tempered (250 HB) | Optimal | 30 | 4 | 1,590 rpm / 0.1 mm/rev | 955 rpm / 0.16 mm/rev |
| Non-alloy steel, about 0.75 %C, annealed (270 HB) | Optimal | 30 | 4 | 1,590 rpm / 0.1 mm/rev | 955 rpm / 0.16 mm/rev |
| Non-alloy steel, about 0.75 %C, quenched and tempered (300 HB) | Effective | 12 | 4 | 635 rpm / 0.1 mm/rev | 380 rpm / 0.16 mm/rev |
| Low-alloy and cast steel (under 5% alloying), annealed (180 HB) | Optimal | 30 | 4 | 1,590 rpm / 0.1 mm/rev | 955 rpm / 0.16 mm/rev |
| Low-alloy steel, quenched and tempered (275 HB) | Effective | 20 | 4 | 1,060 rpm / 0.1 mm/rev | 635 rpm / 0.16 mm/rev |
| Low-alloy steel, quenched and tempered (300 HB) | Effective | 12 | 4 | 635 rpm / 0.1 mm/rev | 380 rpm / 0.16 mm/rev |
| High-alloy, cast and tool steel, annealed (200 HB) | Effective | 12 | 4 | 635 rpm / 0.1 mm/rev | 380 rpm / 0.16 mm/rev |
| Austenitic stainless steel, age hardened (180 HB) | Effective | 15 | 3 | 795 rpm / 0.08 mm/rev | 475 rpm / 0.12 mm/rev |
| Duplex stainless steel (250 HB) | Effective | 10 | 4 | 530 rpm / 0.1 mm/rev | 320 rpm / 0.16 mm/rev |
| Precipitation-hardening stainless steel (250 HB) | Effective | 15 | 4 | 795 rpm / 0.1 mm/rev | 475 rpm / 0.16 mm/rev |
| Wrought aluminium and magnesium alloy, non heat treatable (60 HB) | Optimal | 60 | 6 | 3,180 rpm / 0.16 mm/rev | 1,910 rpm / 0.24 mm/rev |
| Wrought aluminium and magnesium alloy, heat treatable (100 HB) | Optimal | 60 | 6 | 3,180 rpm / 0.16 mm/rev | 1,910 rpm / 0.24 mm/rev |
| Cast aluminium and magnesium alloy (up to 12% Si), non heat treatable (75 HB) | Optimal | 40 | 5 | 2,120 rpm / 0.12 mm/rev | 1,270 rpm / 0.19 mm/rev |
| Cast aluminium and magnesium alloy (up to 12% Si), heat treatable (90 HB) | Optimal | 40 | 5 | 2,120 rpm / 0.12 mm/rev | 1,270 rpm / 0.19 mm/rev |
| Aluminium and magnesium cast alloy over 12% Si (130 HB) | Effective | 30 | 8 | 1,590 rpm / 0.24 mm/rev | 955 rpm / 0.37 mm/rev |
| Copper alloys, free cutting, Pb over 1% (110 HB) | Optimal | 50 | 5 | 2,650 rpm / 0.12 mm/rev | 1,590 rpm / 0.19 mm/rev |
| Brass (CuZn, CuSnZn) (90 HB) | Effective | 35 | 5 | 1,860 rpm / 0.12 mm/rev | 1,110 rpm / 0.19 mm/rev |
| Bronze (CuSn) (100 HB) | Optimal | 45 | 5 | 2,390 rpm / 0.12 mm/rev | 1,430 rpm / 0.19 mm/rev |
| Thermosetting and fibre-reinforced plastics | Effective | 70 | 5 | 3,710 rpm / 0.12 mm/rev | 2,230 rpm / 0.19 mm/rev |
Feed rates (mm/rev) for the feed numbers above:
| Ø (mm) | Feed no. 3 (mm/rev) | Feed no. 4 (mm/rev) | Feed no. 5 (mm/rev) | Feed no. 6 (mm/rev) | Feed no. 8 (mm/rev) |
|---|---|---|---|---|---|
| 2 | 0.03 | 0.04 | 0.05 | 0.06 | 0.095 |
| 3 | 0.045 | 0.055 | 0.07 | 0.09 | 0.14 |
| 4 | 0.06 | 0.075 | 0.09 | 0.12 | 0.18 |
| 5 | 0.07 | 0.09 | 0.11 | 0.14 | 0.21 |
| 6 | 0.08 | 0.1 | 0.12 | 0.16 | 0.24 |
| 8 | 0.1 | 0.13 | 0.16 | 0.2 | 0.31 |
| 10 | 0.12 | 0.16 | 0.19 | 0.24 | 0.37 |
| 12 | 0.15 | 0.18 | 0.23 | 0.28 | 0.42 |
| 16 | 0.19 | 0.23 | 0.29 | 0.36 | 0.54 |
| 20 | 0.23 | 0.28 | 0.34 | 0.42 | 0.64 |
| 25 | 0.27 | 0.33 | 0.41 | 0.5 | 0.74 |
Sizes and item numbers
Every size in the range, with its Sutton item number, flute length (l2) and overall length (l1).
| Item no. | Diameter d1 (mm) | Flute length l2 (mm) | Overall length l1 (mm) |
|---|---|---|---|
| D177 0100 | 1 | 6 | 26 |
| D177 0110 | 1.1 | 7 | 28 |
| D177 0120 | 1.2 | 8 | 30 |
| D177 0130 | 1.3 | 8 | 30 |
| D177 0140 | 1.4 | 9 | 32 |
| D177 0150 | 1.5 | 9 | 32 |
| D177 0160 | 1.6 | 10 | 34 |
| D177 0170 | 1.7 | 10 | 34 |
| D177 0180 | 1.8 | 11 | 36 |
| D177 0190 | 1.9 | 11 | 36 |
| D177 0200 | 2 | 12 | 38 |
| D177 0210 | 2.1 | 13 | 40 |
| D177 0220 | 2.2 | 13 | 40 |
| D177 0230 | 2.3 | 13 | 40 |
| D177 0240 | 2.4 | 14 | 43 |
| D177 0250 | 2.5 | 14 | 43 |
| D177 0260 | 2.6 | 14 | 43 |
| D177 0270 | 2.7 | 16 | 46 |
| D177 0280 | 2.8 | 16 | 46 |
| D177 0290 | 2.9 | 16 | 46 |
| D177 0300 | 3 | 16 | 46 |
| D177 0310 | 3.1 | 18 | 49 |
| D177 0320 | 3.2 | 18 | 49 |
| D177 0330 | 3.3 | 18 | 49 |
| D177 0340 | 3.4 | 20 | 52 |
| D177 0350 | 3.5 | 20 | 52 |
| D177 0360 | 3.6 | 20 | 52 |
| D177 0370 | 3.7 | 20 | 52 |
| D177 0380 | 3.8 | 22 | 55 |
| D177 0390 | 3.9 | 22 | 55 |
| D177 0400 | 4 | 22 | 55 |
| D177 0410 | 4.1 | 22 | 55 |
| D177 0420 | 4.2 | 22 | 55 |
| D177 0430 | 4.3 | 24 | 58 |
| D177 0440 | 4.4 | 24 | 58 |
| D177 0450 | 4.5 | 24 | 58 |
| D177 0460 | 4.6 | 24 | 58 |
| D177 0470 | 4.7 | 24 | 58 |
| D177 0480 | 4.8 | 26 | 62 |
| D177 0490 | 4.9 | 26 | 62 |
| D177 0500 | 5 | 26 | 62 |
| D177 0510 | 5.1 | 26 | 62 |
| D177 0520 | 5.2 | 26 | 62 |
| D177 0530 | 5.3 | 26 | 62 |
| D177 0540 | 5.4 | 28 | 66 |
| D177 0550 | 5.5 | 28 | 66 |
| D177 0560 | 5.6 | 28 | 66 |
| D177 0570 | 5.7 | 28 | 66 |
| D177 0580 | 5.8 | 28 | 66 |
| D177 0590 | 5.9 | 28 | 66 |
| D177 0600 | 6 | 28 | 66 |
| D177 0610 | 6.1 | 31 | 70 |
| D177 0620 | 6.2 | 31 | 70 |
| D177 0630 | 6.3 | 31 | 70 |
| D177 0640 | 6.4 | 31 | 70 |
| D177 0650 | 6.5 | 31 | 70 |
| D177 0660 | 6.6 | 31 | 70 |
| D177 0670 | 6.7 | 31 | 70 |
| D177 0680 | 6.8 | 34 | 74 |
| D177 0690 | 6.9 | 34 | 74 |
| D177 0700 | 7 | 34 | 74 |
| D177 0710 | 7.1 | 34 | 74 |
| D177 0720 | 7.2 | 34 | 74 |
| D177 0730 | 7.3 | 34 | 74 |
| D177 0740 | 7.4 | 34 | 74 |
| D177 0750 | 7.5 | 34 | 74 |
| D177 0760 | 7.6 | 37 | 79 |
| D177 0770 | 7.7 | 37 | 79 |
| D177 0780 | 7.8 | 37 | 79 |
| D177 0790 | 7.9 | 37 | 79 |
| D177 0800 | 8 | 37 | 79 |
| D177 0810 | 8.1 | 37 | 79 |
| D177 0820 | 8.2 | 37 | 79 |
| D177 0830 | 8.3 | 37 | 79 |
| D177 0840 | 8.4 | 37 | 79 |
| D177 0850 | 8.5 | 37 | 79 |
| D177 0860 | 8.6 | 40 | 84 |
| D177 0870 | 8.7 | 40 | 84 |
| D177 0880 | 8.8 | 40 | 84 |
| D177 0890 | 8.9 | 40 | 84 |
| D177 0900 | 9 | 40 | 84 |
| D177 0910 | 9.1 | 40 | 84 |
| D177 0920 | 9.2 | 40 | 84 |
| D177 0930 | 9.3 | 40 | 84 |
| D177 0940 | 9.4 | 40 | 84 |
| D177 0950 | 9.5 | 40 | 84 |
| D177 0960 | 9.6 | 43 | 89 |
| D177 0970 | 9.7 | 43 | 89 |
| D177 0980 | 9.8 | 43 | 89 |
| D177 0990 | 9.9 | 43 | 89 |
| D177 1000 | 10 | 43 | 89 |
| D177 1010 | 10.1 | 43 | 89 |
| D177 1020 | 10.2 | 43 | 89 |
| D177 1050 | 10.5 | 43 | 89 |
| D177 1080 | 10.8 | 47 | 95 |
| D177 1100 | 11 | 47 | 95 |
| D177 1120 | 11.2 | 47 | 95 |
| D177 1150 | 11.5 | 47 | 95 |
| D177 1180 | 11.8 | 47 | 95 |
| D177 1200 | 12 | 51 | 102 |
| D177 1220 | 12.2 | 51 | 102 |
| D177 1250 | 12.5 | 51 | 102 |
| D177 1280 | 12.8 | 51 | 102 |
| D177 1300 | 13 | 51 | 102 |
| D177 1350 | 13.5 | 54 | 107 |
| D177 1400 | 14 | 54 | 107 |
| D177 1450 | 14.5 | 56 | 111 |
| D177 1500 | 15 | 56 | 111 |
| D177 1550 | 15.5 | 58 | 115 |
| D177 1600 | 16 | 58 | 115 |
| D177 1650 | 16.5 | 60 | 119 |
| D177 1700 | 17 | 60 | 119 |
| D177 1750 | 17.5 | 62 | 123 |
| D177 1800 | 18 | 62 | 123 |
| D177 1850 | 18.5 | 64 | 127 |
| D177 1900 | 19 | 64 | 127 |
| D177 1950 | 19.5 | 66 | 131 |
| D177 2000 | 20 | 66 | 131 |
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, use a spot drill before drilling the hole; the Sutton D175 and D176 spotting drills are made for this.
- 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 size table gives the drill diameter (d1) tolerance as h8. An h8 drill diameter may be at nominal or smaller, never larger.
| Drill diameter (mm) | h8 tolerance (minus only, ISO 286-2) |
|---|---|
| 0.2 to 3 | 14 µm |
| 3 to 6 | 18 µm |
| 6 to 10 | 22 µm |
| 10 to 18 | 27 µm |
| 18 to 30 | 33 µm |
| 30 to 50 | 39 µm |
Troubleshooting
- Drill breaks. Dull point: sharpen; Drill has front taper due to wearing: sharpen; Insufficient lip clearance on point: grind correctly; Lip clearance too great: regrind to correct clearance angle.
- Outer corner breaks down. Flutes clogged with chips: remove drill from hole and clear the flutes; Cutting speed too high: reduce speed; Dry cutting, no lubricant at cutting edges: apply cutting fluid.
- Cutting edges chip. Lip clearance too great: regrind to correct clearance angle; Feed too heavy: reduce feed.
- Hole rough. Dull point: sharpen; Feed too heavy: reduce feed; Dry cutting, no lubricant at cutting edges: apply cutting fluid; Fixture/clamping not rigid: secure job firmly.
- Hole oversize. Unequal angle or uneven length of cutting edges: regrind to same lip lengths and angles; Spindle run-out / loose spindle: check machine.
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | D177 (DXS Stub Drill) |
| Material | High Speed Steel Cobalt (HSS Co, 5% cobalt) |
| Finish | Titanium aluminium nitride (TiAlN) |
| Flute geometry | 35° right-hand helix (R35) |
| Point | 130° Form A point |
| Shank | Straight shank, d1 to h8 |
| Standard | DIN 1897 |
| Drill diameter tolerance (d1) | h8 |
| Designation | WN |
| Drilling depth | up to 3 × Ø |
| Sizes in this range | 118 sizes, 1-20mm |
Related drilling products
Compare other Sutton drills: D151 CNC stub, D155 R40 UNI SPM stub, D153 Black Magic stub, D186 Blue Bullet stub and D165 DXJ jobber. Browse all Stub Drill Bits. Need help choosing? Our guide to choosing the right drill bit and drill bit selection guide cover drill types and materials, and the speeds and feeds chart and cutting tool troubleshooting guide cover speeds and common problems.
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