Deltronic Class X Plus Heat Treated Pin Gauges .6376” – .8370” / 16.1950mm – 21.2575mm

Deltronic Class X Plus Heat Treated Pin Gauges .6376” – .8370” / 16.1950mm – 21.2575mm

The Deltronic Class X Plus Heat Treated Pin Gauges .6376” – .8370” / 16.1950mm – 21.2575mm are designed for dimensional inspection tasks requiring maximum precision, repeatability, and durability. Manufactured to Class X standards, these pin gauges are engineered to hold tight tolerances consistently across the entire size range. Each gauge pin in this series is supplied with a Certificate of Accuracy traceable to the National Institute of Standards and Technology (NIST), ensuring confidence in compliance, accuracy, and traceability.

These heat treated pin gauges feature a single tolerance system—+0.000040"/-0 for inch sizes and +0.0010mm/-0 for metric sizes—with a roundness specification of 0.000020" (0.0005mm). Each gage is permanently size-marked, providing instant identification and eliminating unnecessary handling or rechecking during use. This key feature minimizes downtime while reducing the potential for measurement errors, making these pin gauges well-suited for fast-paced inspection environments.

Every Deltronic Class X Plus gage is precision lapped to an ultra-smooth finish of approximately one microinch. This mirror-like surface improves wear resistance and ensures consistent and easy engagement during gauging operations. The relief-style handle design—exclusive to Deltronic—allows for easy use with or without AGD handles and promotes better control under oily or slippery conditions, eliminating the need for external grip enhancements.

Engineered with extended length—ranging from 1 7/8” to 3 1/2” depending on diameter—these heat treated pin gauges provide more usable measuring surface, which is especially beneficial in deep or restricted-access inspection points. Their structural integrity is reinforced through a proprietary heat treatment process that brings the hardness to Rockwell C62–64. Further stabilized through a cold stabilization process, each pin gauge maintains its dimensional reliability over time, even in variable temperature or high-cycle inspection applications.

With their robust construction, superior finish, and precision performance, these Deltronic heat treated pin gauges are trusted by quality professionals for applications ranging from layout and hole spacing validation to go/no-go gauging in high-spec environments.