50mm Insert Pin Ø 1.5mm For Dial Indicators Steel - Käfer Messuhrenfabrik GmbH & Co. KG

Benefit from precise, repeatable contact points thanks to the hardened steel construction and a 1.5 mm diameter tip that ensures consistent readings; order this measuring contact pin directly via Metav Werkzeuge or consult our specialists if clarification is needed.

Käfer measuring contact pin – 1.5 mm Ø, 50 mm length, M2.5 thread

Käfer measuring contact pin for dial indicators, a slim contact probe designed for confined measuring points and reliable signal transmission in workshop and inspection environments

• Ø 1.5 mm contact tip for fine measurements
• 50 mm overall length for extended reach
• M2.5 thread for standard indicator fittings
• Solid steel construction for stability and wear resistance

Accurate contact for fine measurement points

The measuring contact pin provides a consistent contact geometry thanks to its 1.5 mm diameter tip and straight 50 mm length, which together reduce deflection and help maintain reproducible measurements. In practical terms, the small tip diameter allows access to narrow grooves and closely spaced features, while the extended shank keeps the indicator clear of nearby obstructions. The combination of those dimensions supports a reliable tactile interface between the workpiece and the measuring instrument, enabling clear analogue or digital indicator deflection with minimal lateral play. This paragraph explains why the dimensional choices matter for inspection tasks and how they translate into repeatable measurement results.

Simple compatibility with common dial indicators

Fitted with an M2.5 thread, this probe mates with a wide range of dial gauges and indicator heads that accept metric fine threads. The thread standard allows straightforward installation and secure locking, so the contact pin remains stable during short measurement cycles and vibrational conditions typical in workshops. For users unfamiliar with thread standards, M2.5 denotes a metric screw with a 2.5 mm nominal diameter; it is a frequent size for small indicator accessories. This clarity supports quick decision-making when choosing accessories for existing indicator fleets and minimises downtime for retrofitting.

Robust material choice for long service life

Manufactured in steel, the pin balances hardness with resistance to impact and surface wear, making it suited for frequent contact against ferrous and non-ferrous parts under normal inspection loads. The material selection reduces the need for frequent replacements and keeps long-term operating costs low. If surface finish is critical, the steel shank provides a stable base for adding custom tips or sleeves where applicable; however, the supplied geometry is optimised for direct contact on typical machined surfaces. The construction therefore supports dependable day-to-day use in production, maintenance and quality control contexts.

Practical handling and maintenance guidance

Routine care is straightforward: keep the contact face free of burrs and contamination to preserve reading fidelity, and inspect the 1.5 mm tip for rounding after extended service. Replacement is simple because the M2.5 thread enables quick removal and installation without requiring specialist tools. When explanations of technical terms are needed, "contact pin" or "probe" refers to the small, usually hardened element that transfers mechanical motion from the part under test to the measuring instrument. Clear maintenance guidance like this helps non-specialist staff preserve measurement accuracy and extends the functional life of the accessory.

Choose the Käfer measuring contact pin for precise, accessible measurement points — contact Metav Werkzeuge for procurement or technical advice at info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: 4000851588NW
• Designation: Measuring contact pin, Ø 1.5 mm, L 50 mm
• Manufacturer: Käfer Messuhrenfabrik GmbH & Co. KG

Facts

• Diameter: 1.5 mm
• Length: 50 mm
• Thread: M2.5
• Packaging unit: 1

Special features

• Material: Steel
• Form: Pin
• Product type: Measuring contact for dial indicators
• Suitable for fine, narrow measuring points

FAQ

What is the nominal diameter of the contact tip?
The contact tip has a nominal diameter of 1.5 mm, which is specified for the Käfer measuring contact pin and suits fine-feature measurement.

Which thread does the probe use for mounting?
The probe is fitted with an M2.5 thread, a common metric fine thread for small indicator accessories.

Is the measuring contact pin suitable for use on hardened surfaces?
The pin is made of steel and is intended for routine inspection contact; for very hard or abrasive surfaces, inspection after use is recommended to check for wear.

How long is the shank and what reach does it provide?
The overall length of the shank is 50 mm, providing extended reach for measurements in confined or recessed areas.

Can the probe be replaced individually on existing dial indicators?
Yes, the M2.5 threaded design enables individual replacement on compatible indicators without special adapters.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com