RG-7004 | External Thread Size Inspection Gages | Functional Size Gages

External Thread Roll Gage, Range: 16” - 20” (406.4 mm - 508 mm)

Heavy‑Duty Pitch Diameter Inspection for Extra‑Large Threads

The Gagemaker RG‑7004 is a robust external thread roll gage engineered for inspecting the pitch diameter of extra‑large threaded components. Designed for maximum rigidity, stability, and repeatability, the RG‑7004 is the go‑to solution for oilfield manufacturing, heavy machining operations, and calibration labs working with oversized thread forms.

RG-7004, External Functional Size Thread Roll Gauge

Range:   16″ – 20″ / (406.4 mm – 508 mm)

Indicator Travel:           .500″

Indicator Resolution:    .0005″

These functional size inspection (or “GO/NO GO”) gages measure external thread diameters ranging from ⅝” – 24″.

The gages are adjustable within a size range and use interchangeable thread rolls to measure different pitch threads.

Setting dimensions for the functional pitch diameter gages are provided by the TDWIN Thread Disk Software. 

Indicators have a .5″ travel and .0005″ resolution with higher resolutions available.

GAGEMAKER RG-7004: Thread Roll Gage, External 16" - 20" Range