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ITP Straight Styli - Type A - Ruby Ball - M4 Thread x 23mm Overall Length - THM406007023
| Styli Type | Type A |
| Thread Size | M4 |
| Ball Diameter (DK) | 6 |
| Overall Length (L) | 23 |
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Description
The ITP Straight Styli Type A with Ruby Ball is a precision probing stylus built for everyday metrology tasks. With a rigid carbide stem and a premium ruby ball, it delivers reliable, repeatable contact for accurate measurements in CMM and inspection workflows.
- Thread: M4 thread compatibility with standard probe holders
- Overall length: 23 mm for compact reach and stable probing
- Stem material: Carbide for extreme rigidity and minimal deflection
- Ball material: Ruby ball renowned for hardness and wear resistance
- Ball sizes: Available from Ø1.0 mm to Ø6.0 mm to suit feature size
- Design: Straight stylus optimized for everyday, standard-use probing
- Custom sizes: Other sizes can be requested via the configurator or by e-mail
Designed for metrology professionals and workshop technicians, this straight stylus provides predictable probing behavior and long wear life. The carbide stem minimizes bending under typical probe loads, while the ruby ball maintains a sharp, durable contact surface across numerous measurements. With multiple ruby ball diameters available, you can tailor the stylus to small features or larger land areas, improving feature detection and measurement speed. The 23 mm length and M4 threading ensure quick integration with existing probe systems and fixtures, reducing setup time and boosting throughput. If you need a size outside the standard Ø1.0–Ø6.0 mm range, request it through the configurator or by email.
Part Numbers
- Protool Part Number
- ITP-THM406007023
- 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.


