Discover our versatile Nut and Bolt Thread Checker, essential for professionals and DIY enthusiasts alike. Identify up to 28 sizes of bolts and nuts with ease, covering metric sizes from M4 x 0.7 to M14 x 2.0 and imperial sizes from #6 – 32 Coarse to 1/2 – 20 Fine. Its compact, one-hand-friendly design features clear, laser-etched measurements for quick screw length identification. Crafted from durable 304 stainless steel screws and lightweight 6061 aluminum, each pillar meets Go & No Go Class 2B ANSI Standard gauge specifications. Choose between wall-mounting for accessibility or freestanding with stable foot pads. Keep your workspace organized and efficient with this practical tool, perfect for avoiding mismatched or lost screws.