Head Style：Dome Head, Countersunk, Large Flange
| Dimension Code | Specification (mm) | Dimension Code | Specification (mm) | ||
|---|---|---|---|---|---|
| d | Diameter | Φ2.4 | L | Length | 4 |
| L(max) | Lmax | 4.24 | L(min) | Lmin | 3.76 |
| d(max) | dmax | 2.48 | d(min) | dmin | 2.3 |
| dk(max) | dkmax | 5 | dk(min) | dkmin | 4.3 |
| k(max) | kmax | 0.7 | k(min) | kmin | 0.4 |
| L1(min) | L1(min) | 27 | |||
| Material | Type | Steel | General Technical Conditions | ||
|---|---|---|---|---|---|
| Grade | |||||
| Thread | Tolerance | Mechanical Property | Class | ||
| Standard | Standard | ||||
| Tolerance | Product Grade | Surface Treatment | |||
| Standard | |||||
| Surface Roughness | Surface Defect | ||||
| Acceptance & Packing | Reference Weight per 1000 (kg) | ||||
Retail Packaging Small color boxes (500 or 1000 pcs) with EternalFast branding, 10-20 boxes per master carton.
Bulk Packaging 25kg double-layer woven bags or heavy-duty cartons on fumigated pallets.
Protection Aluminum rivets are naturally corrosion-resistant, but steel mandrels are zinc-plated (Cr3+) to prevent rust.
Shear & Tensile Strength Test Every batch is tested for breaking load to ensure compliance with DIN 7337 standards.
Riveting Performance 100% inspection of the mandrel-head connection to prevent "mandrel fallout."
Certification Full MTC 3.1, Salt Spray Test Report (for mandrels), and RoHS/REACH compliance certificates are provided.