I am your go-to source for the square head bolt m8 x 20, built to resist vibration and torque in demanding projects. I stock mil-spec finishes and metric threads, ensuring fit on rails, machines, and frames. When you buy for a production line or design studio, you want reliable material, fast delivery, and consistent tolerances. I offer competitive pricing for bulk orders with no hidden fees, perfect for {Wholesale} inquiries and built to satisfy {Manufacturers} who push for uptime. Each bolt features a square head for easy wrenching and a shank that resists galling. We can provide QA certificates, packaging options, and standard lengths or custom counts. If you need fast samples or a steady supply, I can arrange stock that ships quickly to your warehouse or job site. Let me help you scale your operations with precision driven fasteners, backed by responsive service and warranty.
Square head bolts in M8 x 20 are a compact, reliable option for fastenings in machinery, electronics enclosures, and furniture frames. The 8 mm diameter fits tight spaces, while the 20 mm length provides solid engagement in thin panels and cross-members. Pros across industries favor this size for its strong drive stability: the square head reduces cam-out in confined spots and allows precise torque control with standard tools. Material choices typically include carbon steel with zinc plating for cost-effective corrosion resistance, or stainless steel for harsher environments, all manufactured to tight tolerances that meet global standards. For global buyers, selecting a supplier with consistent quality, traceability, and dependable lead times is essential. Look for rigorous quality control, material certificates, and 100% final inspection. Flexible packaging, batch traceability, and customization options such as finish and length deviations can streamline your assembly line. A capable production base in major manufacturing regions can support steady supply for multinational projects, reducing risk of stockouts and delays. Before shipping, request installation guidance and performance data to ensure safe, efficient assembly and long-term reliability in diverse operating conditions.
| Model | Material | Grade | Finish | Thread | Length (mm) | Head Type | Drive Type | Tensile Strength (MPa) | Standard |
|---|---|---|---|---|---|---|---|---|---|
| SHB-M8-020-01 | Carbon Steel | 8.8 | Zinc Plated | M8 x 1.25 | 20 | Square Head | External square drive | 800 | ISO 898-1 |
| SHB-M8-025-02 | Stainless Steel 304 | 304 | Passivated | M8 x 1.25 | 25 | Square Head | External square drive | 520 | ISO 898-1 |
| SHB-M8-030-03 | Carbon Steel | 4.6 | Black Oxide | M8 x 1.25 | 30 | Square Head | External square drive | 260 | ISO 898-1 |
| SHB-M8-035-04 | Alloy Steel | 5.6 | Zinc Plated | M8 x 1.25 | 35 | Square Head | External square drive | 420 | ISO 898-1 |
| SHB-M8-040-05 | Stainless Steel 316 | 316 | Passivated | M8 x 1.25 | 40 | Square Head | External square drive | 520 | ISO 898-1 |
| SHB-M8-045-06 | Alloy Steel | 10.9 | Zinc Plated | M8 x 1.25 | 45 | Square Head | External square drive | 1040 | ISO 898-1 |
| SHB-M8-050-07 | Carbon Steel | 8.8 | HDG | M8 x 1.25 | 50 | Square Head | External square drive | 800 | ISO 898-1 |
| SHB-M8-060-08 | Stainless Steel 304 | 304 | Brushed | M8 x 1.25 | 60 | Square Head | External square drive | 520 | ISO 898-1 |
| SHB-M8-070-09 | Carbon Steel | 4.6 | Black Oxide | M8 x 1.25 | 70 | Square Head | External square drive | 260 | ISO 898-1 |
| SHB-M8-080-10 | Alloy Steel | 5.6 | Zinc Plated | M8 x 1.25 | 80 | Square Head | External square drive | 460 | ISO 898-1 |
| SHB-M8-100-11 | Stainless Steel 316 | 316 | Polished | M8 x 1.25 | 100 | Square Head | External square drive | 520 | ISO 898-1 |
| SHB-M8-120-12 | Carbon Steel | 8.8 | Zinc Plated | M8 x 1.25 | 120 | Square Head | External square drive | 800 | ISO 898-1 |