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Measuring Fasteners

Measuring Fastener Length	Measuring Fastener Diameter	How Fastener Measurements are Notated

Thread Pitches

• About Thread Pitch and Thread Count (TPI)
• US Threads Per Inch (TPI) Table (Coarse and Fine)
• Metric Thread Pitch Table (Coarse and Fine)

Printable Tools for Measuring Fasteners

• Printable US and Metric Ruler
  Print a fully functional US and Metric ruler to measure fastener length.
• Printable US and Metric Thread Gauge
  A printable paper version of our popular Thread Gauges. Use this tool to distinguish between course and fine thread bolts and machine screws, and between the many thread pitches used on metric bolts and machine screws.

Type-specific measurements

See the sections below for dimensions and measurement charts for specific fastener types.

Wood Screws	Sheet Metal Screws	Bolts
Machine Screws	Nuts and Washers	Anchoring Products
Eye Bolts and Eye Lags	Hanger Bolts	U-Bolts and J-Bolts