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ITP Straight Styli - Type A - Ruby Ball - M3 Thread x 42mm Overall Length - THM3040H4042
| Styli Type | Type A |
| Thread Size | M3 |
| Ball Diameter (DK) | 4 |
| Overall Length (L) | 42 |
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Description
The ITP Straight Styli - Type A with Ruby Ball (M3 Thread x 42mm Overall Length) is a precision measurement stylus designed for production and inspection environments. Its carbide stem and integrated break point protect your measuring system from accidental collisions while delivering reliable, repeatable contact with tested surfaces.
- Thread: M3 threaded connection for secure, quick attachment to compatible probes and fixtures.
- Overall Length: 42 mm from base to ruby sphere for reaching into tight measurement pockets.
- Ruby Ball Diameter: High-quality ruby balls available in Ø4.0 mm to Ø8.0 mm to suit a range of probing needs.
- Stem Material: Carbide stem provides stiffness, wear resistance, and dimensional stability during repeated use.
- Integrated Break Point: Built-in break point absorbs shocks and helps prevent damage to the measuring system in production settings.
- Geometry: Type A straight design optimized for consistent contact and repeatable measurements.
- Customization: Other dimensions can be requested via the configurator or by e-mail.
In production and metrology workflows, this stylus offers dependable performance: the hard carbide core maintains precise contact geometry, the ruby ball delivers a smooth, enduring probing surface, and the protective break point reduces downtime from accidental bumps. The option to choose ball diameters from 4.0 to 8.0 mm expands use cases from fine-feature probing to broader contact areas, while the standard 42 mm length suits many fixture layouts. If your setup requires a specific dimension beyond the standard, consult the configurator or contact support for tailored options. This stylus is well-suited for high-precision QA, assembly inspection, and routine calibration tasks on demanding production lines.
Part Numbers
- Protool Part Number
- ITP-THM3040H4042
- 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.


