The pocket depth for the button punch snap lock when applied to 24 gauge sheet metal is 1/2 inch. Which gauge is used?

• A. 22 gauge
• B. 24 gauge
• C. 26 gauge
• D. 28 gauge

Answer: (B)

The pocket depth is tied to the metal’s thickness (gauge). Since this pocket depth is given specifically for sheet metal of a certain gauge, the gauge in use is the one mentioned—24 gauge. In sheet metal, thicker (lower-number) gauges require different pocket depths than thinner (higher-number) gauges, so the stated 1/2 inch pocket depth corresponds to the 24 gauge metal. The other gauges would not match this pocket depth.