Please log in here to access all benefits, including promotional discounts and faster checkouts.

ITP Disc Styli stainless steel Prob Ball Material - M5 Thread x 20mm Ball Diameter - Type N - KIM504020M50
| Thread Size | M5 |
| Ball Diameter (DK) | 20 |
| Styli Type | Type N |
| Prob Ball Material | stainless steel |
Learn more about Klarna
Description
The ITP Disc Styli stainless steel Prob Ball is a precision spherical disc probe designed for reliable measurement of large inside diameters and integrated undercuts. It’s ideal for metrology work with coordinate measuring machines (CMMs) and inspection setups, offering robust mounting and stable contact with a 20 mm ball.
- Ball Diameter: 20 mm ball provides ample contact area for stable readings on large internal features.
- Thread: M5 male thread enables secure, quick mounting into compatible probe heads or holders.
- Material: Stainless steel construction delivers durability, wear resistance, and corrosion resistance in demanding environments.
- Geometry: Type N spherical disc design optimized for accessing large inside diameters and integrated undercuts.
- Application Focus: Specifically suited for inside-diameter measurement tasks where standard disks fall short; note that normal disks are unsuitable for probing in the Z direction unless used with radius end-roller variants.
- Part Number: KIM504020M50 for precise ordering and compatibility tracking.
This disc stylus delivers consistent, high-precision contact geometry that helps you capture true dimensional data in challenging interiors. The combination of a generous 20 mm ball and robust stainless steel construction minimizes wear while maintaining accuracy across repeated scans. The M5 thread keeps integration straightforward with common probe systems, helping you reduce setup time and keep your measurement workflow efficient. Ideal for aerospace, automotive, and tooling components where inner bore verification and undercut features are critical, the ITP Disc Styli Type N delivers dependable performance when you need it most.
Part Numbers
- Protool Part Number
- ITP-KIM504020M50
- 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.


