Metric Bolt Nut Screw Thread Gauge Inspection Ruler | Qme

The Metric Bolt Nut Screw Thread Gauge Inspection Ruler is an essential measuring tool for engineers, mechanics, machinists, and DIY enthusiasts. Quickly and accurately identify thread pitch, bolt size, and nut dimensions — all with one compact, durable gauge ruler designed to metric engineering standards.

Whether you're sorting fasteners on a workbench, verifying hardware specs on a job site, or building out your toolkit, this screw gauge delivers the precision you need without the guesswork.

Key Features

• Comprehensive Metric Coverage: Accurately measures a wide range of bolt, nut, and screw sizes to metric standards, making it ideal for professional and home workshop use.
• Thread Pitch Identification: Quickly determine thread pitch and gauge for bolts and screws — no more trial-and-error fitting.
• Durable Construction: Built from sturdy materials designed to withstand repeated use in workshop, automotive, or industrial environments.
• Compact & Portable: Slim, lightweight design fits easily in a toolbox, apron pocket, or parts drawer.
• Clear Metric Markings: Clearly etched or printed metric scale ensures fast, accurate readings at a glance.
• Versatile Application: Compatible with standard metric fastener sizes — ideal for automotive repair, machinery maintenance, woodworking, and general engineering tasks.

Specifications

• Type: Bolt, Nut & Screw Thread Gauge / Inspection Ruler
• Standard: Metric (G-series thread sizes)
• Use Cases: Fastener identification, thread inspection, engineering measurement
• Brand: Qme

Who Is This For?

This metric screw gauge is perfect for professional engineers, auto mechanics, hobbyist machinists, hardware store staff, and anyone who regularly works with metric fasteners. It's also a practical, thoughtful gift for the workshop enthusiast in your life.

For more guidance on fastener standards and safe tool use, visit the OSHA Hand & Power Tools resource and the NIST Weights & Measures reference for authoritative measurement standards information.

Frequently Asked Questions

Q: What does a bolt nut screw gauge metric ruler measure?

A: This metric gauge ruler is designed to measure and identify bolt diameter, nut size, and screw thread pitch according to metric engineering standards. It allows you to quickly match fasteners to their correct metric specification without needing calipers or specialized equipment for every measurement.

Q: How do I use the metric screw thread gauge inspection ruler?

A: Simply align the bolt, nut, or screw against the corresponding gauge slot or scale on the ruler. Match the fastener to the slot that fits snugly without forcing — this indicates the correct metric thread size or diameter. The clearly marked metric increments make reading fast and straightforward.

Q: Is this gauge compatible with standard metric fastener sizes?

A: Yes. This inspection ruler covers a range of standard metric fastener sizes (G-series), making it broadly compatible with the metric bolts, nuts, and screws most commonly used in automotive, engineering, and general workshop applications.

Q: Is this suitable for professional use?

A: Absolutely. The Qme Metric Bolt Nut Screw Gauge is built for both professional tradespeople and dedicated hobbyists who need reliable, repeatable measurements when working with metric hardware.