Product No: GNGPL-SB0704E
SB0704E 2 oz (57 g) Ground Pin According to UL 498 Figure 119.3 is designed in strict accordance with UL 498 Figure 119.3 (revised March 15, 2006) standards and features a standard 2 oz (57 g) configuration. Its dimensions, tolerances, material properties, hardness, and surface roughness all fully comply with relevant regulatory requirements, ensuring stable and reliable dimensional accuracy thanks to its low thermal expansion coefficient material. The gauge is engineered with specific structural details including a 0.5 inch (12.7mm) diameter section, a spherical full radius on the tip (1845 inch / 4.69mm), and key length dimensions of .797 inch (20.24mm) and .792 inch (20.12mm), with a designated direction for grinding to maintain precision. It serves as a critical tool for verifying the structural and dimensional compliance of plugs and sockets.
Specifications
• Material hardness reaches more than 50HRC
• Thermal expansion coefficient of the material is small, ensuring stable and reliable dimensions and tolerances
• Equipped with a standard 2 oz (57 g) ground pin conforming to UL 498 Figure 119.3
• Key dimension: 0.5 inch (12.7mm) diameter for the specified section
• Key dimension: spherical full radius of 1845 inch (4.69mm) on the tip
• Key length dimensions: 20.24mm and 20.12mm
• Overall dimensions, tolerances, material, and surface roughness meet UL 498 standards
Test Procedures
• Prepare the plug or socket to be tested and ensure the test environment meets the standard requirements for the gauge’s stable use.
• Locate the designated grinding direction of the ground pin gauge and confirm the gauge is free of deformation or damage before testing.
• Insert the ground pin gauge into the ground pin hole of the tested plug or socket in accordance with the structural alignment requirements of UL 498 Figure 119.3.
• Verify whether the fit between the gauge and the tested component meets the dimensional tolerance range specified in UL 498.
• Check if the structural shape of the plug or socket matches the gauge’s profile, ensuring no deviations in key positions like the tip radius and diameter sections.
• Record the test results, marking whether the tested plug or socket complies with the UL 498 standard based on the gauge’s fit and alignment performance.
Applications
• Dimensional and structural compliance testing of plugs and sockets in the electronics industry
• Quality inspection of electrical appliances that involve plug and socket components
• Production line and laboratory verification of plug and socket products
• Compliance certification testing for products in industries related to plugs and sockets, to meet UL 498 regulatory requirements

SB0704E 2 oz (57 g) Ground Pin According to UL 498 Figure 119.3