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ITP Straight Styli - Type A - Ruby Ball - M5 Thread x 40.75mm Overall Length - THM501510040
| Styli Type | Type A |
| Thread Size | M5 |
| Ball Diameter (DK) | 1.5 |
| Overall Length (L) | 40.75 |
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Description
The ITP Straight Styli Type A with Ruby Ball is a precision, straight-contact stylus designed for demanding measurement tasks. Built for engineers and technicians who rely on repeatable, high-accuracy probing, it pairs a rigid carbide stem with a premium ruby ball for dependable results on small features.
- Part Number: THM501510040
- Thread: M5 thread compatible with standard probe heads
- Overall Length: 40.75 mm
- Stem Material: Carbide for exceptional rigidity and minimal deflection
- Ruby Ball Size Range: Diameters from Ø0.7 mm to Ø3.0 mm
- Ball Material: Ruby, offering hardness and wear resistance
- Design: Straight stylus profile for predictable contact and repeatability
- Custom Sizing: Other sizes available on request via configurator or by email
With its carbide stem and ruby ball, this stylus delivers stable, repeatable measurements across a wide range of features. The high-hardness ruby ball minimizes wear and maintains accurate contact geometry over time, while the carbide core reduces deflection under load—translating to tighter tolerances and more reliable inspection data. The 40.75 mm length offers practical reach for accessing recessed features, edges, and fine details without compromising stability. This makes it ideal for CMM probing, toolmaking, and precision metrology tasks where consistent, high-quality readings matter.
Part Numbers
- Protool Part Number
- ITP-THM501510040
- 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.


