The JBO Thread Ring Gauge (GO) - UNC - Right Hand - 2A - 2 3/4 x 4 is a precision inspection tool designed to verify external UNC thread diameters with speed and reliability. It’s ideal for engineers, machinists, quality inspectors, and workshop technicians who need to confirm thread dimensions meet standard requirements and ensure proper mating in assemblies.

Crafted from hardened steel, this GO thread ring gauge delivers lasting accuracy in demanding environments. The knurled exterior provides a secure grip for quick handling and precise alignment, helping you keep inspections moving smoothly in busy shops.

• UNC GO Verification for Right-Hand Threads: Precisely checks external UNC right-hand thread diameters to quickly confirm parts meet the minimum diameter standard, streamlining inspections.
• Exact 2A Size (2 3/4 x 4): Matches the 2A class specification, providing consistent acceptance criteria across parts and batches.
• Hardened Steel with Knurled Finish: Durable construction resists wear in busy workshops while the knurled grip aids handling and repeated measurements.

This gauge supports faster, more reliable quality control by delivering clear pass/fail checks and helping teams reduce rework. With precise dimensions and robust materials, it enhances workflow efficiency, improves measurement consistency, and gives you confidence in every threaded assembly you produce or inspect.