Double-Sided Bolt & Nut Thread Gauge | Stainless Steel

Identify Any Bolt or Nut Thread in Seconds

Stop guessing and wasting time hunting for the right fastener. This double-sided stainless steel bolt and nut thread gauge gives you fast, accurate identification of metric and imperial thread sizes — right in the palm of your hand. Whether you're in the workshop, on a construction site, or mid-repair in the garage, this compact tool keeps you working efficiently and confidently.

Key Features

• Double-Sided Design: Identifies both bolt and nut sizes on a single card, cutting task time dramatically with intuitive ruler alignment and clear size markings.
• Crystal-Clear Markings: Precisely calibrated scale with high-contrast markings for reliable readability — even in low-light workshop environments.
• Solid Stainless Steel Construction: Built from rust-resistant, heavy-duty stainless steel for long-lasting durability across demanding environments.
• Metric & Imperial Compatible: Supports both standard thread systems, making it universally useful across a wide range of professional and DIY applications.
• Ultra-Compact & Portable: Weighing just 30g and measuring 15×6 cm (5.91×2.36 in), it slips easily into a toolbox, apron pocket, or work bag.
• Wide Application Range: Perfect for mechanical assembly, automotive repair, furniture installation, construction engineering, woodworking, and general workshop use.

Product Specifications

• Material: Stainless Steel
• Size: 15 × 6 cm / 5.91 × 2.36 inches
• Net Weight: 30g
• Thread Standards: Metric & Imperial
• Suitable For: Adults / Professional Use
• Country of Origin: Made in Mainland China

Note: Due to different lighting and screen settings, item colour may appear slightly different from the pictures. Please allow a 1–2 cm measurement tolerance due to manual measurement methods.

Package Contents

• 1 × Stainless Steel Bolt & Nut Thread Gauge Card

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Authoritative Reference

For safety guidance on hand tools and workshop equipment, visit the OSHA Hand and Power Tools Safety Page.

Learn more: List of tools and equipment

Frequently Asked Questions

Q: What thread standards does this bolt thread gauge support?

A: This double-sided bolt and nut thread gauge supports both metric and imperial (SAE) thread standards, making it suitable for a wide range of fasteners used in automotive repair, mechanical assembly, furniture installation, and construction engineering.

Q: Is this thread gauge tool suitable for professional workshop use?

A: Absolutely. The stainless steel bolt gauge is designed for professional use in workshops, construction sites, repair shops, and automotive environments. Its rust-resistant build and precise calibration make it reliable for everyday heavy-duty use.

Q: How portable is this bolt measuring tool?

A: Very portable. The thread gauge card weighs only 30g and measures 15×6 cm, making it easy to carry in a toolbox, tool belt, or work apron. It's ideal for on-the-go fastener identification without bulky equipment.