Heavy-Duty Elevator Bolts for Conveyor Belt | DIN 1523 / ASME B18.5 | Flat Head | Carbon Steel & Stainless Steel | Metric & Inch
Product Title
- Heavy-Duty Elevator Bolts for Conveyor Belt | DIN 1523 / ASME B18.5 | Flat Head | Carbon Steel & Stainless Steel | Metric & Inch
Product Summary
Longze Heavy-Duty Elevator Bolts are specifically engineered for securing buckets to conveyor belts in grain handling, mining, and industrial material transport. Manufactured in Yongnian, China,
our bolts feature an ultra-flat head design to minimize belt wear and a precision square neck to prevent rotation during tightening.
✔ Universal Compatibility: Fully compliant with DIN 1523 (European) and ASME B18.5 (American) standards.
✔ Belt Protection: Large-diameter flat head distributes clamping pressure to prevent belt pull-through.
✔ High-Tension Strength: Available in Grade 4.8, 8.8, and Stainless Steel 304/316 for corrosive environments.
Standards: DIN 1523, ASME B18.5, ISO 5089.
Diameter Range: M6 to M12 | 1/4" – 1/2".
Material Grade: Carbon Steel Class 4.8/8.8 | Stainless Steel A2-70/A4-80.
Surface Finish: Zinc Plated, Hot Dip Galvanized (HDG), Plain Steel, Black Oxide.
- Ensuring high stripping resistance and pull-through strength for heavy-load conveyor systems.
| Property Class | Материал | Tensile Strength (min) | Yield Strength (min) | Hardness Range |
| Class 4.8 | Low Carbon Steel | 420 MPa | 340 MPa | 71 – 95 HRB |
| Class 8.8 | Medium Carbon | 800 MPa | 640 MPa | 22 – 32 HRC |
| SS304 (A2-70) | Нержавеющая сталь | 700 MPa | 450 MPa | 200 – 280 HV |
| SS316 (A4-80) | Нержавеющая сталь | 800 MPa | 600 MPa | 240 – 320 HV |
- Precise flat-head diameter and square-neck height to ensure flush-mount belt installation.
| Thread Size | Head Diameter (D) | Head Thickness (H) | Square Width (S) | Square Height (K) |
| M6 (1/4") | 20.0 mm | 1.5 mm | 6.0 mm | 4.0 mm |
| M8 (5/16") | 25.0 mm | 2.0 mm | 8.0 mm | 5.0 mm |
| M10 (3/8") | 30.0 mm | 2.5 mm | 10.0 mm | 6.0 mm |
| M12 (1/2") | 35.0 mm | 3.0 mm | 12.0 mm | 7.5 mm |
- Matching the right bolt coating to your specific bulk material handling environment.
| Среда | Material Handled | Recommended Surface | Service Life (Est.) |
| Dry / Indoor | Grain, Feed, Flour | Zinc Plated (Blue/White) | High |
| Outdoor / Humid | Coal, Sand, Fertilizers | Hot Dip Galvanized (HDG) | Excellent |
| Marine / Chemical | Salt, Potash, Acidic Materials | Stainless Steel 316 | Maximum |
| Heavy Mining | Iron Ore, Rock, Aggregate | Grade 8.8 + HDG | Structural Grade |
Avoid Pitfalls:
Head-To-Shank Concentricity: We prevent belt wobbling by ensuring perfect alignment between the flat head and the bolt shank during our multi-station cold-forming process.
Square Neck Precision: Poorly formed square necks cause the bolt to spin during nut tightening. Longze bolts feature sharp-edged square necks for a secure, non-slip lock into the belt/bucket.
Hydrogen Embrittlement baking: For Grade 8.8 galvanized elevator bolts, we implement a strict de-embrittlement baking process to ensure zero brittle failure under high-tension loads.
Perfect Fit Assembly:
Flat-Head Flush Mount: Designed to sit perfectly level with the conveyor belt, reducing friction with the pulley and extending the life of your belt system.
Full Set Availability: We provide matching Large Fender Washers и Nylon Insert Lock Nuts to ensure the entire assembly remains vibration-resistant.
Quality Control & Logistics:
ISO 9001 Certified: 5-step QC including belt-pull simulation tests and thread gauge verification.
- Sea-Worthy Packaging: Reinforced moisture-proof boxes + Fumigation-Free Pallets for safe transport from our Yongnian hub to global ports.
Q: Can you customize the head diameter for specific belts? A: Yes, we can produce non-standard head diameters up to 40mm for specialized heavy-duty conveyor systems.
Q: Do you offer MTC (Mill Test Certificates)? A: Yes, we provide full chemical and physical MTCs for every batch, including tensile and hardness data.
- Planning a heavy-duty steel structure? Don't risk your project on low-grade fasteners. Send your requirements → Get an expert bolt recommendation + quote within 12 hours.
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