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

Compact reference pair of hardened chrome steel, 11 mm diameter and 0.003 mm accuracy for repeatable inspection contacts; ideal for comparative checks and gauge master assemblies. The paired design and tight diameter tolerance support consistent measurement chains and reduced uncertainty. Order the set directly via Metav Werkzeuge or consult our metrology specialists for integration advice.

Gauge sphere pair M318.421 — hardened chrome steel, 11 mm, 0.003 mm accuracy (Metav IndustryLine)

Gauge sphere pair M318.421 for precision reference and comparative measurements in inspection, gauging and fixture verification.

• Hardened chrome steel >HRC 62
• 11 mm precision diameter
• Accuracy 0.003 mm, tolerance 0.00008 mm

Engineered for consistent reference contacts

The paired spheres are manufactured from hardened chrome steel, delivering dimensional stability and surface integrity that matter in repeatable inspections. The 11 mm diameter combined with an accuracy of 0.003 mm and a tight diameter tolerance of 0.00008 mm reduces variability when used as masters or reference contacts. The high hardness (> HRC 62) preserves form under frequent use, so reference points remain reliable over time, translating into fewer rechecks and less scrap.

Minimise uncertainty in measurement chains

A controlled surface finish and fine geometric tolerances make these spheres suitable for transmission of contact points in comparative setups and gauge calibration workflows. The documented surface roughness value of 0.00001 and the pair arrangement support stable repeatability when comparing workpieces or checking gauge balls, pins and seats. This technical consistency improves throughput by shortening inspection cycles and supporting confident go/no-go decisions on the shop floor.

Practical advantages for workshop and laboratory use

Supplied as a two-piece set, the pair is lightweight (0.05 kg) and easy to position in gauge fixtures, holders or custom jigs. The small footprint and high hardness enable use in confined setups and with tactile probing systems without rapid wear. The paired format facilitates direct comparative measurement and quick interchange between master and test items. For precision assemblies and toolroom benches, the spheres act as compact, robust reference elements that integrate with existing gauge stacks.

Traceability and fit for purpose

The item is supplied with clear identifiers for inventory and documentation (SKU M318.421, GTIN included), aiding traceability in quality records and audit trails. Designed for use in gauging, master checks and fixture alignment, the spheres contribute to a reliable measurement chain when combined with calibrated instruments. Choosing a hardened, dimensionally stable reference like this supports overall process capability and consistent product quality.

Contact Metav Werkzeuge in Emmerich for expert advice on integrating the M318.421 gauge sphere pair into inspection routines or to arrange supply directly from our stock.

Technical Data

• Article number: M318.421
• GTIN: 4054469184098
• Material: hardened chrome steel
• Set contents: 2 pieces

Core specifications

• Diameter: 11 mm
• Accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Surface roughness: 0.00001
• Hardness: > HRC 62
• Weight: 0.05 kg

Applications & features

• Intended use: gauges / master measurements
• High surface finish for repeatable contact
• Paired set for comparative checks
• SKU: M318.421

FAQ

What measurement accuracy does the M318.421 gauge sphere pair provide?
The M318.421 gauge sphere pair from Metav IndustryLine is specified with an accuracy of 0.003 mm, suitable for high-precision reference and comparative measurements.

Are the spheres supplied as a set and how many pieces are included?
The delivery comprises a paired set: the M318.421 is supplied as 2 pieces for direct use in comparative checks and fixture setups.

What material and hardness are used for these reference spheres?
These spheres are made of hardened chrome steel and are specified at > HRC 62, offering wear resistance and long-term dimensional stability.

How are these gauge spheres typically used in a workshop environment?
The M318.421 gauge sphere pair is used as compact reference contacts for gauges, master assemblies and fixture alignment, enabling repeatable contact points for inspection and comparative testing.

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