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ITP Straight Styli - Type A - Silicon Nitride Ball - M3 Thread x 41.5mm Overall Length - THM3S3004041
| Styli Type | Type A |
| Thread Size | M3 |
| Ball Diameter (DK) | 3 |
| Overall Length (L) | 41.5 |
| Shank Diameter (DG) | 4 |
| Measuring Length (ML) | 34 |
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The ITP Straight Styli – Type A with a silicon nitride ball is a precision straight stylus built for everyday probing and scanning tasks. Suited for metrology labs and on‑machine inspection, its rigid carbide stem and compact 41.5 mm overall length deliver dependable performance with standard M3-threaded probe heads.
- Thread: M3 thread for compatibility with common probe heads
- Overall Length: 41.5 mm for a balanced reach and stability
- Stem Material: Carbide for exceptional rigidity and minimal deflection
- Tip Material: Silicon nitride ball, offering durability and smooth contact
- Ball Size Range: Available in ball sizes from Ø1.5 mm to Ø5.0 mm within this product range
- Recommended Use: Ideal for scanning and contact measurements on untreated aluminum
- Customization: Additional dimensions can be requested via configurator or by email
Whether you’re ensuring dimensional accuracy on aluminum parts or performing repeatable surface measurements, this stylus delivers consistent contact geometry and long-lasting wear resistance. The silicon nitride ball minimizes wear on both the stylus and the workpiece, helping you achieve reliable data and smoother scans across multiple sessions. With a precise 41.5 mm length and a robust carbide stem, it pairs quickly with standard setups and supports a wide range of measurement scenarios—from simple spot checks to detailed surface mapping.
| Styli Type | Type A |
| Thread Size | M3 |
| Ball Diameter (DK) | 3 |
| Overall Length (L) | 41.5 |
| Shank Diameter (DG) | 4 |
| Measuring Length (ML) | 34 |
| Neck Diameter (DS) | 2 |
| Stem Material | carbide |
| Base Material | stainless steel |
| Prob Ball Material | silicon nitride |
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.


