3.91mm Gauge Pin, Single, ±0.001mm Accuracy, 50mm Length, Workshop Version, Special Steel - Metav IndustryLine

Take advantage of the combination of workshop-ready robustness, sub-micrometre accuracy and compact handling for reliable end‑measurement tasks; order the component directly via Metav Werkzeuge or consult our specialists for application advice.

M323.391 Gauge pin — 3.91 mm diameter, ±0.001 mm tolerance, 50 mm length (Metav IndustryLine)

The M323.391 gauge pin is a single precision test pin designed for workshop inspection and end‑measurement tasks, offering repeatable dimensional checks in production and quality control.

• Workshop-grade precision ±0.001 mm
• Diameter 3.91 mm, length 50 mm
• Hardened special steel construction
• Single test pin for end‑measurement

Precision where repeatability reduces rework

The core advantage of this precision test pin is its ±0.001 mm tolerance, which provides a measurable benefit in reducing measurement uncertainty and downstream rework. For production environments where final dimensions matter, the very fine tolerance ensures that gauging and pass/fail checks identify out‑of‑spec parts early. The compact 3.91 mm diameter and 50 mm overall length make the pin suitable for narrow bores and confined inspection fixtures, combining precision with practical reach.

Durable construction for everyday workshop use

Manufactured in special steel and finished for inspection use, the component is intended as a workshop‑grade tool able to withstand routine handling on the shop floor. The material selection and surface treatment give reliable wear resistance and preserve the ground diameter over repeated contact cycles, so measurement drift is minimised and service intervals are extended. The single‑piece design simplifies integration into standard gauging sets and makes replacement straightforward when inventories are managed.

Integrates into standard inspection processes

Designed for end‑measurement and go/no‑go checks, the pin serves as a reference element in fitting gauges, fixture alignment and final dimensional inspection. Its small footprint and precise diameter support quick comparative measurements and feeler tests without complex setup. Traceability is supported by the product identifiers, which assist quality records and lot tracking for inspection reports and in‑house audits, improving process control and documentation.

Simple handling and storage for reliable readiness

The compact mass and geometry reduce the risk of accidental damage during handling; the small weight makes the pin easy to position in tight assemblies or on dedicated inspection racks. Routine visual checks and careful storage on a lay‑flat block or in a protective sleeve prolong service life. For procurement and inventory control, the item is supplied as a single test pin with unique identification to aid in stockkeeping and rapid replacement planning.

Contact Metav Werkzeuge for tailored advice on integrating the M323.391 gauge pin into existing inspection routines or for assistance with order quantities and delivery from our Emmerich site

Technical data

• Article number: M323.391
• GTIN: 4061905056130
• Manufacturer: Metav IndustryLine
• Material: Special steel
• Net weight: 0.007 kg

Facts

• Diameter: 3.91 mm
• Length: 50 mm
• Tolerance: ±0.001 mm
• Mass: 0.007 kg

Special features

• Workshop‑grade design
• Single test pin for end measurements
• Precision ground surface
• Traceable identification (GTIN)

FAQ

What is the intended use for this gauge pin? The M323.391 gauge pin is intended for end‑measurement checks, fixture alignment and pass/fail gauging in workshop and inspection environments.

How precise is the diameter and how does that affect measurements? The diameter is specified at 3.91 mm with a tolerance of ±0.001 mm, which provides sub‑micrometre control for detecting small dimensional deviations during final inspection.

What material is the pin made from and how durable is it? The pin is made from special steel, offering enhanced wear resistance and durability suitable for regular workshop use.

Is the pin supplied individually or as part of a set? This product is supplied as a single test pin under the article number M323.391 and is intended for individual replacement or use in bespoke gauging arrangements.

Can the pin be used for alignment of fixtures and jigs? Yes, the pin’s precision diameter and stable geometry make it suitable for fixture alignment, locating tasks and repeatable positioning in assembly or inspection setups.

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