Test Finger Nail for IEC 60335-1 Figure 7

Product No: SMT-335F7

Leave a Message

Description
Download

This Test Finger Nail is a specialized tool built to verify the security of snap-together parts in household and similar electrical appliances, fully compliant with IEC 60335-1:2020. It features a hardened stainless steel tip (for precise force application) and a nylon insulating handle, with an integrated spring that calibrates to 10N-50N—ensuring consistent testing of how well 卡扣 components resist detachment. Compact and ergonomic, it’s designed for easy handling, making it essential for manufacturers, labs, and certifiers checking if appliance parts stay secure under standard stress, preventing hazards from loose components.

Standards:

Standards No.	Clause/Figure	Standards Name
IEC 60335-1:2020	Clause 22.11, Figure 7	Household and similar electrical appliances – Part 1: General requirements
UL 60335-1:2024	Clause 8.4	Standard for Safety of Household and Similar Electrical Appliances – Part 1: General Requirements
CSA C22.2 No. 60335-1:2024	Clause 22.11	Household and Similar Electrical Appliances – Part 1: General Requirements
IRAM 4220-1:2022	Clause 6.4	Electrical Appliances – Safety Requirements – Part 1: General Provisions
UL 60335-1:2024	Clause 8.1.1	Standard for Safety of Household and Similar Electrical Appliances – Part 1: General Requirements

Specification:
Applicable Force Range: 10N, 20N, 30N, 40N, 50N (calibrated via integrated spring for consistent force output)
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; – Angle: 37° (matches IEC 60335-1 Figure 7); – Handle Diameter: ø12-0.05mm; – Overall Length: 80mm; – Radius (R2): ±0.05mm
Functional Design: Built-in spring (delivers push force per Clause 22.11); Smooth tip (avoids damaging snap-together parts); M3 thread (for accessory compatibility)
Dimensional Tolerances Linear dimensions: ≤25mm: ±0.1mm; Tip thickness: ±0.02mm; Angles: ±1°
Compatibility: Works with household appliances (e.g., refrigerators, small kitchen tools) and force gauges for enhanced precision

Test Procedures:
1. Inspect the probe for worn tips, cracked nylon handles, or loose springs; confirm force range and dimensions meet specs.
2. Calibrate the integrated spring to the required force (e.g., 50N for critical snap parts like appliance covers).
3. Power off the appliance under test and secure it on a flat, stable surface; identify snap-together components (e.g., knobs, panels).
4. Hold the nylon handle, align the stainless steel tip with the edge of the snap part.
5. Apply steady push force until reaching the set value; check if the component stays attached (no detachment).
6. Record results to verify compliance with safety standards.

Applications:
1. Security testing of snap-fit door panels on household refrigerators and freezers per IEC 60335-1:2020 Figure 7.
2. Compliance checks for control knobs on small kitchen appliances (e.g., blenders, coffee makers) to meet UL 60335-1:2024.
3. Quality control for snap-together casings on electric fans and space heaters during production, following CSA C22.2 No. 60335-1:2024.
4. Safety testing of detachable filter covers on air purifiers to ensure they don’t loosen under standard force.
5. Pre-certification testing (e.g., CE, UL) for appliances seeking global market entry, validating snap part reliability.