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ITP Straight Styli - Type A - Ruby Ball - M4 Thread x 20.5mm Overall Length - THM401007020
| Styli Type | Type A |
| Thread Size | M4 |
| Ball Diameter (DK) | 1 |
| Overall Length (L) | 20.5 |
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Description
The ITP Straight Stylus Type A with Ruby Ball is a precision probing accessory designed for metrology professionals who need reliable, repeatable touch measurements. Its rigid carbide stem and high-quality ruby ball deliver consistent contact on micro-features in CMM setups and other measurement rigs.
- Thread Mount: M4 thread at the top for secure attachment to standard probing equipment.
- Overall Length: 20.5 mm from base to ball, offering a compact, controllable probing geometry.
- Tip Material: Ruby ball tip chosen for high hardness and low wear, available in diameters from Ø1.0 mm to Ø8.0 mm.
- Stem Material: Carbide stem provides exceptional rigidity and dimensional stability under load.
- Assembly: Hand-tightened with an SW5.5 open-end spanner for quick, tool-assisted setup.
- Custom Sizes: Additional tip diameters and lengths can be requested via configurator or by e-mail to fit unique measurement needs.
Designed to minimize deflection and wear, this stylus enables repeatable measurements across multiple cycles. The standard M4 threading ensures compatibility with a wide range of probing systems, while the 20.5 mm length keeps access to tight features straightforward. The ruby ball tip provides precise contact geometry, helping reduce measurement error on delicate or micro-scale features. When your project requires different radii, simply explore configurator options or contact support to tailor the setup without sacrificing accuracy or speed.
Part Numbers
- Protool Part Number
- ITP-THM401007020
- 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.
