The Asimeto Plug Gauge (D/E) UNC Right Hand 2B No. 4 x 40 is a precision internal-thread measurement tool designed for quick, reliable verification of UNC, UNF, and UNEF threaded holes. Built for machinists, inspectors, and quality teams, it delivers precise go/no-go checks with a tapered insertion tip and a comfortable, controllable grip.

• Thread Standards: Conforms to UNC, UNF, and UNEF internal threads for versatile, one-tool verification.
• Right-Hand Design: Optimized for right-hand threads to ensure correct alignment and measurement orientation.
• Size and Tolerance: No. 4 x 40 with 2B tolerance class for consistent, repeatable results.
• Tapered Insertion End: A tapered nose guides entry into threaded holes, enabling rapid and accurate assessment of fit.
• Ergonomic Construction: Knurled handle and robust ends provide secure grip and durability in demanding workshop environments.
• Series: Part of the 695 Series, crafted for dependable performance in thread verification tasks.

This plug gauge offers a clear, tactile indication of thread quality, helping you identify undersized or oversized holes and prevent mismatched fasteners. It streamlines quality control, maintenance checks, and assembly workflows by delivering precise measurements with minimal interpretation. For best results, use it on clean holes, insert with a steady, gentle motion, and compare against your standard go/no-go criteria within your gauge set.