UL 498 Figure 136.2 Large Test Probe

This UL 498 Figure 136.2 Large Test Probe is precision-manufactured to verify the structural and dimensional compliance of plugs and sockets with UL 498 standards, specifically aligning with the requirements of Figure 136.2. It features strict adherence to standard specifications for key attributes including dimensions, tolerances, material quality, and surface finish, with high hardness tool steel construction and minimal thermal expansion to ensure stable, reliable performance in electrical component inspection.

Specifications:
• Applicable standard: UL 498 “Attachment Plugs and Receptacles” (Figure 136.2)
• Material: Tool Steel
• Rockwell hardness: C58 to C60
• Radius (R): 0.125 in ± 0.005 (3.175 mm ± 0.127 mm)
• Key diameter (1): 0.030 in ± 0.002 (0.762 mm ± 0.0508 mm)
• Key diameter (2): 0.060 in ± 0.001 (1.524 mm ± 0.0254 mm)
• Angle: 45°
• Length segment: 0.150 in ± 0.005 (3.81 mm ± 0.127 mm)
• Overall length: 1.00 in ± 0.030 (25.4 mm ± 0.762 mm)
• Material thermal expansion coefficient: Small, ensuring dimensional stability
• Dimensional tolerances: Compliant with UL 498 standard requirements
• Surface roughness: Meets UL 498 specified criteria

Test Procedures:
• Inspect the test probe for cleanliness, no visible damage, or dimensional irregularities before use.
• Secure the plug or socket under test in a stable fixture to prevent displacement during inspection.
• Align the probe with the designated testing position of the product as outlined in UL 498 Figure 136.2.
• Conduct structural and dimensional inspection by guiding the probe through the relevant features of the test sample.
• Verify if the product’s structure and size match the tolerances and specifications of UL 498.
• Document the test results and confirm whether the product meets the standard’s compliance requirements.

Applications:
• Structural and dimensional inspection of plugs and sockets to ensure conformity with UL 498 standards.
• Quality control processes in the electronics and electrical appliance manufacturing industries.
• Conformity testing for plug and socket products on production lines and workshops.
• R&D testing for optimizing the design of plug and socket components.
• Compliance verification in third-party testing laboratories and certification institutions.

UL498 Figure 136.2 SU0196 Large Test Probe