Machinists' Blocks | McMaster-Carr

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System of Measurement

Width

Shape

Stepped Rectangle

Gauge Size

Material

Stainless Steel

Length

1 1/16" to 3 3/4"

Height

1 1/8" to 2 1/2"

Number of Holes

Gauge Block Grade

DFARS Specialty Metals

RoHS

Export Control Classification Number (ECCN)

Certificate Type

Accuracy Certificate Traceable to NIST

Calibration Certificate Traceable to NIST

REACH

Hole Style

Manufacturer

Hole Thread Size

Total Number of Holes

Component

Hole Diameter

Number of Pieces

Specifications Met

Fed. Spec. GGG-P-463

Thread Size

V Width

Hole Center-to-Center

V-Block Style

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1,013 Products

Fabricating and Machining

Setup Blocks

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

Fixture Squares

Fixture Squares

Build different fixtures on multiple sides of the same block

Pin Removal Blocks

Pin Removal Blocks

Remove a range of pin sizes from workpieces by tapping them into holes with a punch and hammer

Angle Plates

Ensure accurate right angles and hold workpieces and fixtures perpendicular to your machine table

V-Blocks

Hold round workpieces

Support Blocks

Support setup clamps for quick height adjustments

Fixture Keys

Locate fixtures and vises on your machine table

Sine Plates

Use with gauge blocks to measure angles on your workpiece or set up a part for precision grinding

Sine Bars

Measure, mark, and inspect exact angles on dies and other precision parts

Measuring and Inspecting

Gauge Blocks

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

Surface Plates

Extremely flat to give an accurate reference plane for layout and inspection work

Calibration Squares

Calibration Squares

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

Inspection Parallels

Inspection Parallels

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

Inspection Setup Blocks

Inspection Setup Blocks

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

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)