Sutton 3mm D355 90° Carbide Spotting Drill Bit - VHM
Available
The Sutton D355 is a solid carbide spotting drill with a 90° point angle and a bright (uncoated) finish. The drill diameter (d1) is h6 and the shank is h9, and the drill is made to approximately DIN 1897.
Precision drill for machine use; rigid design for "seat" position accuracy; 90° offers hole chamfering and spotting with the one tool; only drill to the depth of the point.
This is the metric range: 9 sizes from 3 to 20 mm, with flute lengths of 9 to 35 mm and overall lengths of 46 to 131 mm.
Where this product is used
- Spotting holes before drilling, with the drill used only to the depth of its point. The 90° point also chamfers the hole in the same operation.
- Materials rated Optimal for this drill: wrought aluminium and magnesium alloys; cast aluminium and magnesium alloys (up to 12% Si); aluminium and magnesium cast alloys over 12% Si; and copper alloys, brass and bronze.
- Also rated Effective: non-alloy steels; low-alloy steels; high-alloy and tool steels; austenitic stainless steel; duplex stainless steel; precipitation-hardening stainless steel; grey cast iron; nodular cast iron; malleable cast iron; thermosetting and fibre-reinforced plastics; titanium and titanium alloys; hardened steel (45 to 62 HRC); and chilled and hardened cast iron.
Finish
Bright (uncoated). The bright finish is for general-purpose applications.
Cutting speeds and feeds
Cutting speeds (Vc) and feed numbers for this drill are from the Sutton High Performance catalogue application guide. The table lists the material groups covered. Optimal ratings are shown in bold and Effective ratings in regular type. 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 0.45 %C, quenched and tempered (250 HB) | Effective | 65 | 5 | 3,450 rpm / 0.12 mm/rev | 2,070 rpm / 0.19 mm/rev |
| Non-alloy steel, about 0.75 %C, annealed (270 HB) | Effective | 65 | 5 | 3,450 rpm / 0.12 mm/rev | 2,070 rpm / 0.19 mm/rev |
| Non-alloy steel, about 0.75 %C, quenched and tempered (300 HB) | Effective | 50 | 4 | 2,650 rpm / 0.1 mm/rev | 1,590 rpm / 0.16 mm/rev |
| Low-alloy steel, quenched and tempered (275 HB) | Effective | 60 | 5 | 3,180 rpm / 0.12 mm/rev | 1,910 rpm / 0.19 mm/rev |
| Low-alloy steel, quenched and tempered (300 HB) | Effective | 50 | 4 | 2,650 rpm / 0.1 mm/rev | 1,590 rpm / 0.16 mm/rev |
| High-alloy, cast and tool steel, annealed (200 HB) | Effective | 50 | 4 | 2,650 rpm / 0.1 mm/rev | 1,590 rpm / 0.16 mm/rev |
| Austenitic stainless steel, age hardened (180 HB) | Effective | 40 | 3 | 2,120 rpm / 0.08 mm/rev | 1,270 rpm / 0.12 mm/rev |
| Duplex stainless steel (250 HB) | Effective | 35 | 3 | 1,860 rpm / 0.08 mm/rev | 1,110 rpm / 0.12 mm/rev |
| Precipitation-hardening stainless steel (250 HB) | Effective | 30 | 3 | 1,590 rpm / 0.08 mm/rev | 955 rpm / 0.12 mm/rev |
| Grey cast iron, ferritic / pearlitic (180 HB) | Effective | 70 | 5 | 3,710 rpm / 0.12 mm/rev | 2,230 rpm / 0.19 mm/rev |
| Grey cast iron, pearlitic (260 HB) | Effective | 70 | 4 | 3,710 rpm / 0.1 mm/rev | 2,230 rpm / 0.16 mm/rev |
| Nodular cast iron, ferritic (160 HB) | Effective | 70 | 4 | 3,710 rpm / 0.1 mm/rev | 2,230 rpm / 0.16 mm/rev |
| Nodular cast iron, pearlitic (250 HB) | Effective | 70 | 4 | 3,710 rpm / 0.1 mm/rev | 2,230 rpm / 0.16 mm/rev |
| Malleable cast iron, ferritic (130 HB) | Effective | 70 | 4 | 3,710 rpm / 0.1 mm/rev | 2,230 rpm / 0.16 mm/rev |
| Malleable cast iron, pearlitic (230 HB) | Effective | 70 | 4 | 3,710 rpm / 0.1 mm/rev | 2,230 rpm / 0.16 mm/rev |
| Wrought aluminium and magnesium alloy, non heat treatable (60 HB) | Optimal | 200 | 5 | 10,610 rpm / 0.12 mm/rev | 6,370 rpm / 0.19 mm/rev |
| Wrought aluminium and magnesium alloy, heat treatable (100 HB) | Optimal | 200 | 5 | 10,610 rpm / 0.12 mm/rev | 6,370 rpm / 0.19 mm/rev |
| Cast aluminium and magnesium alloy (up to 12% Si), non heat treatable (75 HB) | Optimal | 180 | 4 | 9,550 rpm / 0.1 mm/rev | 5,730 rpm / 0.16 mm/rev |
| Cast aluminium and magnesium alloy (up to 12% Si), heat treatable (90 HB) | Optimal | 180 | 4 | 9,550 rpm / 0.1 mm/rev | 5,730 rpm / 0.16 mm/rev |
| Aluminium and magnesium cast alloy over 12% Si (130 HB) | Optimal | 180 | 4 | 9,550 rpm / 0.1 mm/rev | 5,730 rpm / 0.16 mm/rev |
| Copper alloys, free cutting, Pb over 1% (110 HB) | Optimal | 130 | 4 | 6,900 rpm / 0.1 mm/rev | 4,140 rpm / 0.16 mm/rev |
| Brass (CuZn, CuSnZn) (90 HB) | Optimal | 150 | 4 | 7,960 rpm / 0.1 mm/rev | 4,770 rpm / 0.16 mm/rev |
| Bronze (CuSn) (100 HB) | Optimal | 200 | 4 | 10,610 rpm / 0.1 mm/rev | 6,370 rpm / 0.16 mm/rev |
| Thermosetting and fibre-reinforced plastics | Effective | 60 | 4 | 3,180 rpm / 0.1 mm/rev | 1,910 rpm / 0.16 mm/rev |
| Titanium, commercially pure (400 MPa) | Effective | 40 | 3 | 2,120 rpm / 0.08 mm/rev | 1,270 rpm / 0.12 mm/rev |
| Titanium alpha alloys (860 MPa) | Effective | 40 | 3 | 2,120 rpm / 0.08 mm/rev | 1,270 rpm / 0.12 mm/rev |
| Titanium alpha / beta alloys, annealed (960 MPa) | Effective | 40 | 3 | 2,120 rpm / 0.08 mm/rev | 1,270 rpm / 0.12 mm/rev |
| Titanium alpha / beta alloys, age hardened (1170 MPa) | Effective | 35 | 3 | 1,860 rpm / 0.08 mm/rev | 1,110 rpm / 0.12 mm/rev |
| Titanium beta alloys, annealed (830 MPa) | Effective | 40 | 3 | 2,120 rpm / 0.08 mm/rev | 1,270 rpm / 0.12 mm/rev |
| Titanium beta alloys, age hardened (1400 MPa) | Effective | 35 | 3 | 1,860 rpm / 0.08 mm/rev | 1,110 rpm / 0.12 mm/rev |
| Hardened steel, 45 HRC | Effective | 40 | 3 | 2,120 rpm / 0.08 mm/rev | 1,270 rpm / 0.12 mm/rev |
| Hardened steel, 55 HRC | Effective | 30 | 3 | 1,590 rpm / 0.08 mm/rev | 955 rpm / 0.12 mm/rev |
| Hardened steel, 58 HRC | Effective | 30 | 3 | 1,590 rpm / 0.08 mm/rev | 955 rpm / 0.12 mm/rev |
| Hardened steel, 62 HRC | Effective | 30 | 3 | 1,590 rpm / 0.08 mm/rev | 955 rpm / 0.12 mm/rev |
| Chilled cast iron (400 HB) | Effective | 70 | 3 | 3,710 rpm / 0.08 mm/rev | 2,230 rpm / 0.12 mm/rev |
| Cast iron, hardened and tempered, 55 HRC | Effective | 30 | 3 | 1,590 rpm / 0.08 mm/rev | 955 rpm / 0.12 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) |
|---|---|---|---|
| 2 | 0.03 | 0.04 | 0.05 |
| 3 | 0.045 | 0.055 | 0.07 |
| 4 | 0.06 | 0.075 | 0.09 |
| 5 | 0.07 | 0.09 | 0.11 |
| 6 | 0.08 | 0.1 | 0.12 |
| 8 | 0.1 | 0.13 | 0.16 |
| 10 | 0.12 | 0.16 | 0.19 |
| 12 | 0.15 | 0.18 | 0.23 |
| 16 | 0.19 | 0.23 | 0.29 |
| 20 | 0.23 | 0.28 | 0.34 |
| 25 | 0.27 | 0.33 | 0.41 |
Drilling notes
- Only drill to the depth of the point.
- 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).
Accuracy
The drill diameter (d1) tolerance is h6 and the shank tolerance is h9.
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | D355 |
| Range | 90° Carbide Spotting Drill |
| Material | Solid carbide (VHM) |
| Finish | Bright (uncoated) |
| Point | 90° |
| Shank | Plain cylindrical shank, d2 to h9 |
| Standard | approx. DIN 1897 |
| Drill diameter tolerance (d1) | h6 |
| Shank tolerance | h9 |
| Designation | NC |
| Sizes in this range | 9 sizes, 3-20mm |
Related drilling products
Compare other Sutton drills: D364 90° spotting (AlCrN), D365 142° spotting, D366 142° spotting (AlCrN) and D318 centre drill. Browse all Spotting Drill Bit Sets. 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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