1/2-13UNC | American Thread Ring Gauge | 4121-1A1Insize GO Thread Ring Gauge Wallers Industrial Hardware is your local authorised distributor for the complete range of INSIZE Measuring Equipment products. Every INSIZE product comes with a 12 month professional warranty which is honored directly through our store for accurate and hassle free measuring for the professional and novice alike. Specifications: UNC American Go Class 2A Standard ANSI B1. 2 Well designed, durable high precision tools that

✅ Reliable & Consistent Performance – ISO 2 (2B) tolerance ensures precise UNC threads every time

Thread Length (l2): 20 mm

TiAIN coated

Part Number: 15418

Trusted by Professionals – Perfect for machining

Reliable Standard Repair: The 1D insert height provides a solid repair solution for less demanding applications where moderate stress and usage are expected

Featuring a straight flute design and right-hand cutting direction

even in demanding industrial environments

and toolmakers for precision work in a variety of industries

Trusted by Professionals – Ideal for machining

Its optimized X and Y dimensions enhance chip control

Automotive: Ideal for repairing damaged threads in engine components