Tight-tolerance datum faces and flatness control for inspection and reference blocks.
Precision CNC machining of inspection and datum blocks for repeatable, production-ready inspection. We hold flatness and squareness within ±0.0005″ to protect measurement integrity. Fast quoting keeps you out of fire-drill scrambling when existing fixtures fail.
Precision CNC Machining for Inspection / Datum Blocks
We machine inspection and datum blocks used as stable references for CMM setups, surface plate work, inspection fixtures, and alignment tooling. Typical geometries include precision-ground faces, stepped or pocketed datum surfaces, threaded and dowel patterns, and features that must stay locked to a defined coordinate system over time and across batches.
CMM inspection and reference blocks
Datum blocks for fixture and tooling locations
Surface plate inspection / layout blocks
Pocketed inspection blocks with mounted components
Stepped datum blocks for multi-height referencing
Threaded and doweled inspection fixture bases
Hardened wear datum blocks for repetitive clamping
How We Deliver Consistent, High-Accuracy Results
Single-setup machining keeps critical datum faces aligned, minimizing stack-up and feature relationship drift across the block.
Stable processes deliver batch-to-batch repeatability so replacement blocks match your master within microns, not thousandths.
Standardized workflows and fixtures reduce re-clamping, cutting opportunities for human error and missed datum callouts.
Committed lead times and clear communication prevent last-minute inspection crises and schedule surprises.
Industries That Rely on T&D for Inspection / Datum Block Machining
Inspection and datum blocks support critical measurement in demanding environments.
Industrial machinery OEMs
Fluid power and hydraulics
Automotive and off-highway equipment
Aerospace and defense support equipment
Mining and bulk material handling
Rail and heavy transportation
Power generation and energy
General fabrication and weld fixture builders
Technical Capabilities
Materials
4140, 4340, and 1018 steel blocks for durable datum references
6061 and 7075 aluminum for lighter inspection and fixture blocks
Stainless steels for corrosion-resistant metrology and washdown environments
Ductile iron and tooling plate for stable, vibration-damping bases
Common Features
Batch sizes from one-off masters to recurring production runs with identical setups
Controlled single- and dual-setup workflows to protect datum, parallelism, and squareness
Documented inspection routines, including surface plate checks and CMM reports when specified
Frequently Asked Questions
Request a Fast Quote
T&D Machine
Serious Machining for Serious Parts.
Contact
Email: sales@tdmachine.net
Phone: (262) 781-3870
Location
Wisconsin, USA