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ITP Straight Styli - Type A - Silicon Nitride Ball - M5 Thread x 33.5mm Overall Length - THM5S4011033/K
| Styli Type | Type A |
| Thread Size | M5 |
| Ball Diameter (DK) | 4 |
| Overall Length (L) | 33.5 |
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Description
ITP Straight Styli Type A with a silicon nitride ball is a high-precision probing stylus designed for everyday metrology tasks. Built for professionals using standard CMM interfaces, it combines rigidity, versatility, and reliable contact for consistent measurement results.
- Thread: M5 thread for secure attachment to compatible probing systems
- Overall length: 33.5 mm from tip to mounting interface
- Stem material: Carbide for exceptional stiffness and long-term dimensional stability
- Ball material: Silicon nitride ball, ideal for scanning untreated aluminium parts
- Ball size options: Available in ball diameters from Ø1.5 mm to Ø10.0 mm
- Holder diameters: Ø10.0 mm, Ø11.0 mm and Ø12.0 mm holders available
- Custom sizes: Other sizes can be requested via configurator or by e-mail
This stylus is engineered to minimize deflection during contact, enhancing repeatability across a range of part geometries. The silicon nitride ball offers durable, low-wear performance on aluminium surfaces, helping to protect both the part and the stylus during scanning. With multiple holder sizes and a broad ball-diameter spectrum, it adapts to different measurement setups and feature sizes without compromising accuracy. If you need a non-standard size, you can request it through the configurator or by contacting support to tailor the stylus to your workflow.
Part Numbers
- Protool Part Number
- ITP-THM5S4011033/K
- Brand
- ITP
- Category
- Styli
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.


