Machine Screw Information

Dimensions

• US Machine Screw Diameters

Measuring Machine Screws

• Measuring Fastener Length
• Measuring Fastener Diameter
• How Fastener Measurements are Notated

• US Machine Screw Diameter and Thread Chart
  Our printable 'lay-over' sizing chart for identifying US machine screw diameter and thread count.

• Metric Machine Screw Diameter and Thread Chart
  Our printable 'lay-over' sizing chart for identifying metric machine screw diameter and thread pitch.

Drive Sizes For

• Phillips
• Star drive