Screw Thread Pitch Gauge | Metric & Imperial Bolt Measuring Tool

Screw Thread Pitch Gauge — Your All-in-One Bolt & Nut Identifier

Whether you're a professional mechanic, machinist, or dedicated DIYer, this Screw Thread Pitch Gauge is the compact, reliable tool you've been missing from your kit. Quickly identify thread pitch, bolt diameter, and screw length for both metric and imperial fasteners — all from a single, wallet-sized stainless steel card.

Key Features

• Industrial-Grade Stainless Steel Construction: Built from solid, durable metal, this gauge is designed for demanding garage, shop, or field use — delivering consistent, dependable thread and bolt identification over years of use.
• Accurate All-in-One Bolt & Thread Identifier: Uses both inner and outer thread slots to quickly check screw pitch, diameter, and length. An indispensable bolt sizer for mechanics, machinists, and field professionals.
• Clear Laser-Etched Markings: High-contrast, permanently etched scale markings allow fast, accurate readings — even in low-light workspaces or outdoor environments. No fading, no guessing.
• Compact & Portable Design: Slim and wallet-sized, this gauge card fits easily in any tool pouch, pocket, or glove box — giving you instant access to metric thread checking anytime, anywhere.
• Metric & Imperial Compatibility: Covers a wide range of bolt and screw specifications, making it a versatile gauge checker for assembly, repair, and maintenance tasks across multiple standards.

Specifications

• Material: Metal (Stainless Steel)
• Thread Standards: Metric & Imperial
• Folded: No (rigid card format)
• Country of Origin: Made in China

Who Is This For?

This thread pitch gauge is perfect for mechanics, automotive technicians, machinists, fabricators, engineers, and serious hobbyists who regularly work with bolts and screws. It's also a great addition to any home workshop or toolbox.

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For more information on fastener standards and thread specifications, visit the National Institute of Standards and Technology (NIST), the authoritative resource for U.S. measurement standards and precision tooling guidelines.

Notice: Due to varying monitor settings and lighting conditions, actual product color may differ slightly from images. Please allow a 0.5–1 cm measurement tolerance due to manual measurement.

Frequently Asked Questions

Q: What thread standards does this screw thread pitch gauge support?

A: This screw thread pitch gauge supports both metric and imperial thread standards, making it versatile for a wide range of bolts, nuts, and screws used in automotive, machining, and general repair applications.

Q: Is this bolt gauge card durable enough for professional shop use?

A: Yes! The gauge is constructed from industrial-grade stainless steel with laser-etched markings that resist wear and fading, making it suitable for continuous professional use in garages, machine shops, and outdoor field environments.

Q: How do I use this thread pitch gauge to identify a bolt?

A: Simply align the bolt or screw into the matching inner or outer thread slot on the gauge card. The laser-etched scale markings will show you the thread pitch, diameter size, and length — quickly and accurately, without any additional tools required.

Q: Is this gauge compact enough to carry in a tool pouch?

A: Absolutely. The gauge is slim and wallet-sized, designed to fit easily into any tool pouch, pocket, or glove box so you always have it on hand when you need it most.