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OSG Micro Carbide Drill - Micro Spiral - Long Reach - SC Coated - 2.31mm
| Drill Diameter | 2.31 |
| Flute Length | 28.2 |
| Overall Length | 62 |
| Shank Diameter | 3 |
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Description
OSG Micro Carbide Drills - Micro Spiral - Long Reach - SC Coated are precision micro-drills designed for deep or hard-to-reach holes in small-scale parts and assemblies. With a 2.31 mm diameter, they deliver consistent entry and exit quality for sensitive work across electronics, aerospace, and medical applications.
The long-reach design pairs with a micro spiral flute to access tight features while ensuring efficient chip evacuation for smooth, stable drilling, even in challenging materials.
- Long Reach Design: Access deep bores, recessed features, and interior holes without repositioning setups, improving accuracy and repeatability on complex parts.
- Micro Spiral Flute for Chip Evacuation: Promotes rapid chip clearance and better heat control, reducing clogging and delivering a cleaner hole finish.
- SC Coating for Wear Resistance: Reduces friction and wear, extending tool life in demanding materials and maintaining sharpness across extended production runs.
Designed for 2.31 mm micro holes, this drill helps you complete delicate holes with confidence, improving workflow and reducing downtime. The combination of long reach, efficient chip evacuation, and wear-resistant SC coating delivers consistent, high-quality results in electronics, aerospace, and medical components, even when access is tight or materials are tough.
Part Numbers
- Protool Part Number
- OSG-8577231
- Brand
- OSG
- Category
- Drill
Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.
Full Range: OSG Micro Carbide Drills - Micro Spiral - Long Reach - SC Coated
View full collection →You are viewing OSG-8577231. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| OSG-8577050 | 0.50 | 6 | 42 | 3 | £120.85 | 1-2 days | |
| OSG-8577054 | 0.54 | 6.6 | 42 | 3 | £120.85 | 1-2 days | |
| OSG-8577055 | 0.55 | 6.6 | 42 | 3 | £95.97 | 1-2 days | |
| OSG-8577056 | 0.56 | 7.2 | 42 | 3 | £120.85 | 1-2 days | |
| OSG-8577060 | 0.60 | 7.2 | 42 | 3 | £83.56 | 1-2 days | |
| OSG-8577063 | 0.63 | 7.8 | 46 | 3 | £120.85 | 1-2 days | |
| OSG-8577064 | 0.64 | 7.8 | 46 | 3 | £120.85 | 1-2 days | |
| OSG-8577065 | 0.65 | 7.8 | 46 | 3 | £95.97 | 1-2 days | |
| OSG-8577070 | 0.70 | 8.4 | 46 | 3 | £83.56 | 1-2 days | |
| OSG-8577071 | 0.71 | 9 | 46 | 3 | £120.85 | 1-2 days | |
| OSG-8577072 | 0.72 | 9 | 46 | 3 | £120.85 | 1-2 days | |
| OSG-8577073 | 0.73 | 9 | 46 | 3 | £120.85 | 1-2 days | |
| OSG-8577074 | 0.74 | 9 | 46 | 3 | £120.85 | 1-2 days | |
| OSG-8577075 | 0.75 | 9 | 46 | 3 | £95.97 | 1-2 days | |
| OSG-8577080 | 0.80 | 9.6 | 46 | 3 | £83.56 | 1-2 days | |
| OSG-8577081 | 0.81 | 10.2 | 46 | 3 | £120.85 | 1-2 days | |
| OSG-8577082 | 0.82 | 10.2 | 46 | 3 | £109.92 | 1-2 days | |
| OSG-8577090 | 0.90 | 10.8 | 46 | 3 | £83.56 | 1-2 days | |
| OSG-8577091 | 0.91 | 11.4 | 46 | 3 | £120.85 | 1-2 days | |
| OSG-8577092 | 0.92 | 11.4 | 46 | 3 | £120.85 | 1-2 days | |
| OSG-8577100 | 1.00 | 12 | 46 | 3 | £77.37 | 1-2 days | |
| OSG-8577110 | 1.10 | 13.2 | 50 | 3 | £77.37 | 1-2 days | |
| OSG-8577111 | 1.11 | 13.8 | 50 | 3 | £95.97 | 1-2 days | |
| OSG-8577112 | 1.12 | 13.8 | 50 | 3 | £95.97 | 1-2 days | |
| OSG-8577115 | 1.15 | 13.8 | 50 | 3 | £77.37 | 1-2 days | |
| OSG-8577120 | 1.20 | 14.4 | 50 | 3 | £77.37 | 1-2 days | |
| OSG-8577127 | 1.27 | 15.6 | 50 | 3 | £95.97 | 1-2 days | |
| OSG-8577128 | 1.28 | 15.6 | 50 | 3 | £95.97 | 1-2 days | |
| OSG-8577129 | 1.29 | 15.6 | 50 | 3 | £95.97 | 1-2 days | |
| OSG-8577130 | 1.30 | 15.6 | 50 | 3 | £77.37 | 1-2 days | |
| OSG-8577140 | 1.40 | 16.8 | 54 | 3 | £77.37 | 1-2 days | |
| OSG-8577145 | 1.45 | 17.4 | 54 | 3 | £77.37 | 1-2 days | |
| OSG-8577146 | 1.46 | 18 | 54 | 3 | £95.97 | 1-2 days | |
| OSG-8577147 | 1.47 | 18 | 54 | 3 | £95.97 | 1-2 days | |
| OSG-8577150 | 1.50 | 18 | 54 | 3 | £77.37 | 1-2 days | |
| OSG-8577151 | 1.51 | 18.6 | 54 | 3 | £95.97 | 1-2 days | |
| OSG-8577152 | 1.52 | 18.6 | 54 | 3 | £95.97 | 1-2 days | |
| OSG-8577153 | 1.53 | 18.6 | 54 | 3 | £95.97 | 1-2 days | |
| OSG-8577155 | 1.55 | 18.6 | 54 | 3 | £95.97 | 1-2 days | |
| OSG-8577156 | 1.56 | 19.2 | 54 | 3 | £95.97 | 1-2 days | |
| OSG-8577157 | 1.57 | 19.2 | 54 | 3 | £95.97 | 1-2 days | |
| OSG-8577160 | 1.60 | 19.2 | 54 | 3 | £77.37 | 1-2 days | |
| OSG-8577170 | 1.70 | 20.4 | 58 | 3 | £83.56 | 1-2 days | |
| OSG-8577180 | 1.80 | 21.6 | 58 | 3 | £83.56 | 1-2 days | |
| OSG-8577181 | 1.81 | 22.2 | 58 | 3 | £102.16 | 1-2 days | |
| OSG-8577182 | 1.82 | 22.2 | 58 | 3 | £102.16 | 1-2 days | |
| OSG-8577183 | 1.83 | 22.2 | 58 | 3 | £102.16 | 1-2 days | |
| OSG-8577190 | 1.90 | 22.8 | 58 | 3 | £83.56 | 1-2 days | |
| OSG-8577198 | 1.98 | 24 | 58 | 3 | £102.19 | 1-2 days | |
| OSG-8577199 | 1.99 | 24 | 58 | 3 | £102.19 | 1-2 days | |
| OSG-8577200 | 2.00 | 24 | 58 | 3 | £83.56 | 1-2 days | |
| OSG-8577210 | 2.10 | 25.2 | 62 | 3 | £89.79 | 1-2 days | |
| OSG-8577212 | 2.12 | 25.8 | 62 | 3 | £108.40 | 1-2 days | |
| OSG-8577213 | 2.13 | 25.8 | 62 | 3 | £108.40 | 1-2 days | |
| OSG-8577214 | 2.14 | 25.8 | 62 | 3 | £108.40 | 1-2 days | |
| OSG-8577220 | 2.20 | 26.4 | 62 | 3 | £89.79 | 1-2 days | |
| OSG-8577229 | 2.29 | 27.6 | 62 | 3 | £108.40 | 1-2 days | |
| OSG-8577230 | 2.30 | 27.6 | 62 | 3 | £89.79 | 1-2 days | |
| OSG-8577231 Viewing | 2.31 | 28.2 | 62 | 3 | £108.40 | 1-2 days | |
| OSG-8577239 | 2.39 | 28.8 | 62 | 3 | £108.40 | 1-2 days | |
| OSG-8577240 | 2.40 | 28.8 | 62 | 3 | £89.79 | 1-2 days | |
| OSG-8577241 | 2.41 | 29.4 | 66 | 3 | £108.40 | 1-2 days | |
| OSG-8577242 | 2.42 | 29.4 | 66 | 3 | £108.40 | 1-2 days | |
| OSG-8577250 | 2.50 | 30 | 66 | 3 | £89.79 | 1-2 days | |
| OSG-8577255 | 2.55 | 30.6 | 66 | 3 | £108.40 | 1-2 days | |
| OSG-8577256 | 2.56 | 31.2 | 66 | 3 | £108.40 | 1-2 days | |
| OSG-8577257 | 2.57 | 31.2 | 66 | 3 | £108.40 | 1-2 days | |
| OSG-8577260 | 2.60 | 31.2 | 66 | 3 | £89.79 | 1-2 days | |
| OSG-8577270 | 2.70 | 32.4 | 66 | 3 | £89.79 | 1-2 days | |
| OSG-8577277 | 2.77 | 33.6 | 66 | 3 | £108.40 | 1-2 days | |
| OSG-8577278 | 2.78 | 33.6 | 66 | 3 | £108.40 | 1-2 days | |
| OSG-8577279 | 2.79 | 33.6 | 66 | 3 | £108.40 | 1-2 days | |
| OSG-8577280 | 2.80 | 33.6 | 66 | 3 | £89.79 | 1-2 days | |
| OSG-8577290 | 2.90 | 34.8 | 66 | 3 | £89.79 | 1-2 days | |
| OSG-8577300 | 3.00 | 36 | 66 | 3 | £89.79 | 1-2 days |
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