Screw Checkers | McMaster-Carr

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System of Measurement

Thread Size

Screw Size

For Use With

Thread Type

Metric Trapezoidal

Material

Stainless Steel

Thread Location

Diameter

Thread Pitch

Height

Width

Manufacturer

Drill Bit Size

Thickness

Number of Identifiers

Length

Export Control Classification Number (ECCN)

Container Type

Color

REACH

Pipe Size

Pipe Material

DFARS Specialty Metals

RoHS

Threads per Inch

Graduation Location

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41 Products

Measuring and Inspecting

Thread Size Identifiers

Thread Size Identifiers

Confirm your fastener's thread size, pitch, or threads per inch

Diameter Identifiers

Diameter Identifiers

Tighten the strap around rods, drill bits, and other small items to measure outer diameter

Communication

Reference Charts

Reference Charts

Check decimal equivalents, drill sizes, or specifications for socket screws

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