1. Surface Treatment | Zinc plating (environmentally friendly zinc, typically 5-8μm, special: 12μm, Cr³⁺) |
Nickel plating (higher cost, better corrosion resistance) | |
Dacro (Geomet) coating | |
2. Slot Width | Profile 20mm: Slot width 6 or 5mm |
Profile 30mm: Slot width 8 or 6mm | |
Profile 40mm: Slot width 8 or 10mm | |
Profile 45mm: Slot width 10mm | |
3. Step Size | Step height for Slot 10mm: Typically 3.0mm |
Step height for Slot 8mm: Typically 1.5mm | |
4. Material | Standard: 20# steel |
Options: Low carbon steel (Q195, Q235, C1020) or medium carbon steel (35#) | |
Stainless steel options available | |
Grade: 4/6/8/10/12 | |
5. Thread | Metric threads (common): M3, M4, M5, M6, M8, M10 |
US threads: 10-32, 1/4-20, 5/16-18 | |
6. Teeth | 2 teeth, 4 teeth, 7 teeth (fine teeth) |
Other options: T-nut, slide-in nut, ball nut, spring-loaded nut, rhombus nut, flange nut | |
7. Raised Dots | Raised dots on T-nut for electrical conductivity |
8. Inspection | 1. Compatibility with profiles |
2. Compliance with thread standards (pre-galvanized: 6G, post-galvanized: 6H) | |
3. For slot width 6 profiles, thread hole size should not exceed M6 | |
4. For slot width 8 profiles, thread hole size should not exceed M8 | |
5. For slot width 10 profiles, thread hole size should not exceed M10 | |
6. Tolerances according to ISO2768-MK |