M3-M18 Stainless Steel Thread Checker & Screw Pitch Gauge
M3-M18 Stainless Steel Thread Checker & Screw Pitch Gauge
M3–M18 Stainless Steel Thread Checker & Screw Pitch Gauge
Identify metric threads quickly and accurately with this professional-grade M3–M18 Thread Checker and Screw Pitch Measurement Ruler. Constructed from durable stainless steel, this compact caliper-style gauge lets you verify thread pitch on bolts, nuts, screws, and bits in seconds — no guesswork, no costly mis-ordering of fasteners.
Whether you're a machinist, mechanic, engineer, or dedicated DIYer, this tool belongs in every toolbox. Its clear metric markings cover a full M3 to M18 range, making it an indispensable reference for workshops, fabrication benches, and job sites alike.
Made in Mainland China.
Key Features
- Wide Metric Range: Covers M3 through M18 thread sizes for versatile application across fastener types.
- Stainless Steel Construction: Corrosion-resistant and built to withstand daily workshop use.
- Caliper-Style Design: Ergonomic ruler format for easy one-handed operation and fast thread identification.
- Accurate Screw Pitch Measurement: Instantly determine thread pitch for bolts, nuts, screws, and drill bits.
- No Battery Required: Fully mechanical — always ready when you need it.
- CE & DOT Certified: Meets recognized quality and safety standards.
- Compact & Portable: Slim profile fits easily in a tool belt, apron pocket, or drawer.
Specifications
- Material: Stainless Steel
- Thread Range: M3 – M18 (Metric)
- Battery: Not required
- Certification: CE, DOT
- Origin: Made in Mainland China
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Frequently Asked Questions
Q: What thread sizes does this screw pitch gauge cover?
A: This thread checker covers the full metric range from M3 to M18, making it suitable for identifying the thread pitch of the most common bolt, nut, and screw sizes used in automotive, mechanical, and general workshop applications.
Q: Is this gauge compatible with imperial (inch) threads?
A: This tool is designed specifically for metric (ISO) thread measurement (M3–M18). For imperial thread measurement, a separate inch-standard gauge would be required.
Q: Does the thread checker require any batteries or calibration?
A: No — this is a fully mechanical stainless steel measurement tool. It requires no batteries, no charging, and no electronic calibration. Simply match the gauge to your fastener for an instant, accurate reading.
Q: What is the thread checker made of, and is it durable?
A: The gauge is crafted from corrosion-resistant stainless steel, ensuring long-lasting durability even in demanding workshop or job-site environments. It is built to withstand regular heavy-duty use without warping or wearing down.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.