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ITP Straight Styli - Type A - Ruby Ball - M4 Thread x 21.5mm Overall Length - THM403007021
| Styli Type | Type A |
| Thread Size | M4 |
| Ball Diameter (DK) | 3 |
| Overall Length (L) | 21.5 |
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Description
The ITP Straight Styli Type A with a Ruby Ball is a precision probing stylus designed for everyday metrology tasks. Built around a carbide stem for exceptional rigidity, it pairs a high-quality ruby ball with a compact 21.5 mm overall length for reliable, repeatable measurements.
- Thread: M4 threaded shank for secure mounting on standard probe heads and fixtures.
- Ball end: Ruby ball tip—hard, wear-resistant contact suitable for precise scanning and edge measurements; available in sizes Ø1,0 mm to Ø6,0 mm, with custom sizes offered on request.
- Stem material: Carbide for stiffness and dimensional stability under probing forces.
- Overall length: 21.5 mm, compact profile ideal for tight spaces and hard-to-reach features.
- Customization: Other ruby ball sizes can be requested via the configurator or by email.
This straight stylus delivers dependable performance for routine dimensional checks, datum establishment, and feature probing. The combination of a rigid carbide stem and a durable ruby ball minimizes deflection and wear, enhancing measurement consistency over time. Its M4 mount and concise length make it a practical choice when access is limited or detailed surface contact matters. If your measurements require a different ball diameter, you can tailor the tool by selecting another size through the configurator or by contacting support for a custom option.
Part Numbers
- Protool Part Number
- ITP-THM403007021
- 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.
