3 mm Gauge Ball Pair Chrome Steel Hardened Accuracy 0.003 mm, Tolerance 0.00008 mm - Metav IndustryLine

Combining high metrological performance with hardened material durability, this gauge ball pair delivers consistent reference values for inspection, calibration and comparator tasks. The very tight diameter tolerance and ultra‑smooth surface reduce measurement uncertainty and wear in contact applications. Order the gauge ball pair directly via Metav Werkzeuge or ask our consultants if needed.

Gauge Ball Pair M318.413 — hardened chrome steel, 3 mm, 0.003 mm accuracy

A Gauge Ball Pair (M318.413) for precision reference and gauging tasks in laboratory and workshop inspection settings.

• Hardened chrome steel (>HRC 62)
• Accuracy 0.003 mm for reference measurements
• Diameter tolerance 0.00008 mm for reproducibility
• Surface finish Ra 0.00001 mm for low friction
• Supplied as a set of two, diameter 3 mm

Consistent reference values for reliable inspection

These precision spheres serve as stable reference elements in inspection, comparator and setting operations where reproducibility matters. With an accuracy of 0.003 mm, the pair reduces measurement scatter when used in gauge assemblies or alongside optical comparators. The small diameter makes them suitable for fine features while the combination of tight tolerance and repeatable geometry helps to maintain process control and traceable inspection results.

Durable construction and surface quality that reduce uncertainty

Manufactured from hardened chrome steel, the spheres combine hardness and corrosion resistance for long service life in contact measurement tasks. The material hardness exceeds HRC 62, which, together with a diameter tolerance of 0.00008 mm and a surface finish Ra 0.00001 mm, minimises wear and variation at the contact point. These characteristics preserve reference integrity and reduce the frequency of requalification in high‑use environments.

Practical use, traceability and procurement clarity

Supplied as a set of two with a compact packaged weight of 0.05 kg, the spheres are easy to handle for fixture mounting, plug gauges or comparative checks. The small diameter (3 mm) makes them appropriate for micro‑gauging and detailed part inspections where space is constrained. Clear identifiers (M318.413, GTIN 4054469184012) simplify ordering and inventory management, and the robust finish ensures repeatable performance across measurement cycles.

Contact Metav Werkzeuge for availability, tailored technical advice and procurement of the Metav IndustryLine gauge ball pair M318.413 with 0.003 mm accuracy

Technical Data

• Article number: M318.413
• GTIN: 4054469184012
• Category: Lehren

Numbers / Core technical data

• Diameter: 3 mm
• Accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Surface roughness (Ra): 0.00001 mm
• Weight: 0.05 kg
• Hardness: >HRC 62

Special features / Material and supply

• Material: hardened chrome steel
• Pack: set of two gauge balls
• Supplied quantity: 2 pieces
• Suitable for reference and gauge applications

FAQ

What is the nominal diameter and tolerance of these gauge balls?
The pair has a nominal diameter of 3 mm with a diameter tolerance of 0.00008 mm for tight reproducibility.

What level of accuracy can be expected in reference measurements?
The gauge ball pair provides an accuracy of 0.003 mm, making it suitable as a stable reference element in inspection setups.

Are the spheres hardened and suitable for frequent contact use?
Yes, the spheres are made from hardened chrome steel with a hardness greater than HRC 62, offering wear resistance for repeated contact measurements.

How are the parts supplied and what is the quantity per set?
The product is supplied as a set of two gauge balls (M318.413) and is intended for use as paired reference elements.

How can these spheres be integrated into workshop inspection workflows?
The small 3 mm diameter and high surface quality make them suitable for fixture mounting, comparator checks and precision gauging where compact, repeatable references are required.

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