IEC 60335 50N Test Finger Nail

IEC 60335 50N Test Finger Nail is a dedicated tool for verifying the security of snap-together parts in household and similar electrical appliances, fully compliant with IEC 60335-1 Clause 22.11 Figure 7 . It features a precision-machined stainless steel tip (hardened for durability) and a nylon insulating handle.  Designed to apply controlled force, it checks if  components stay secure under standard stress – critical for preventing loose parts that could pose hazards. Its compact, ergonomic design ensures easy handling, making it essential for manufacturers, labs, and certifiers testing appliance safety.

Specification:
• Applicable Force Range: 10N, 20N, 30N, 40N, 50N
• Material Composition – Tip: Hardened stainless steel (wear-resistant, maintains 0.2mm precision); – Handle: Nylon (insulating, flame-retardant UL94 V-0 rating)
• Key Dimensions – Tip thickness: 0.2±0.02mm; – Handle diameter: ø12-0.05mm; – Overall length: 80mm; – Angle: 37° (matches IEC 60335-1 Figure 7)
• Functional Design:  Integrated spring (provides consistent push force as specified in IEC 60335-1 Clause 22.11); Smooth tip (avoids damaging snap-together parts)
• Dimensional Tolerances:  Linear dimensions: ±0.05mm; Tip thickness: ±0.02mm; Angles: ±1°

Test Procedures:
• Inspect the probe for worn tips, cracked handles, or loose adapters; confirm dimensions and force gauge compatibility.
• Attach the test finger nail to a 10-50N force gauge, calibrating to the required force (e.g., 50N for IEC 60335-1 checks).
• Power off the appliance under test and secure it on a flat, stable surface; identify snap-together parts (e.g., appliance covers, control knobs).
• Hold the force gauge, align the stainless steel tip with the edge of the snap component.
• Apply steady, controlled force until reaching the set value; check if the component stays secured (no detachment).
• Record results to verify compliance with safety standards.

Applications:
• Safety testing of snap-together covers on household refrigerators and washing machines per IEC 60335-1 Figure 7.
• Compliance checks for small kitchen appliances (e.g., blenders, coffee makers) to ensure knobs/covers stay secure, meeting UL 507.
• Quality control for electric fans (blade guards, motor covers) during production, following UL 1025 Clause 9.2.
• Security testing of space heater casings (snap-fit panels) to adhere to UL 1278 Clause 8.4.
• Pre-certification testing (e.g., CE, UL) for appliances seeking global market entry, validating snap component reliability.

Test Finger Nail for IEC 60335-1 Figure 7