Precision Blocks | McMaster-Carr

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System of Measurement

Gauge Size

Shape

Material

Length

Width

Gauge Block Grade

Certificate Type

Accuracy Certificate Traceable to NIST

Calibration Certificate Traceable to NIST

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RoHS

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

Exempt

Number of Holes

Export Control Classification Number (ECCN)

REACH

Hole Style

Number of Pieces

Component

Total Number of Holes

Hole Thread Size

Hole Diameter

Hole Center-to-Center

Thickness

Manufacturer Model Number

Thread Size

Squareness Tolerance

854 Products

Measuring and Inspecting

Gauge Blocks

Confirm dies, fixtures, and other workpieces meet precise tolerances and calibrate measuring tools

738 products

Calibration Squares

Lay horizontally or vertically on CNC machines to check the position of tools with high precision

2 products

Bore Gauge Calibrators

Set and check the accuracy of two-point bore gauges

1 product

Height Gauge Calibrators

Ensure height gauges are accurate

3 products

Inspection Parallels

Line up workpieces for precise machining, or support them at a level height for inspecting

8 products

Inspection Setup Blocks

Line up workpieces at precise heights and angles for machining, measuring, and inspecting

2 products

Fabricating and Machining

Setup Blocks

Use as mounting bases and supports to ensure accurate angles and spacing

31 products

Parallels

Raise workpieces above your vise to create clearance for cutting tools

36 products

Alignment Locks

Precisely align your mold halves

25 products