High-quality Allen CSK Bolt supplied by Valaki Enterprise, Nashik — ISO certified, bulk supply to Nashik, Pune & Mumbai.
Allen CSK (Countersunk) Bolt – Grade 10.9 is a high-strength fastener made from alloy steel, designed for applications requiring a flush surface finish. These bolts feature a flat conical head with an internal hex drive, allowing them to sit level with the material surface. With a strength grade of 10.9, these bolts provide excellent durability, high tensile strength, and resistance to heavy loads. Widely used in automotive, machinery, fabrication, and structural applications, they ensure both strength and clean finishing.
Complete material and dimensional specifications for Allen CSK Bolt – Grade 10.9
| Parameter | Details |
|---|---|
| Material | Alloy Steel (Medium Carbon Steel) |
| Grade / Class | 10.9 |
| Size Range | M3 to M24 |
| Length Range | 6mm to 200mm |
| Head Type | Countersunk Head |
| Drive Type | Internal Hex (Allen Key Drive) |
| Thread Type | Metric Coarse / Fine Thread |
| Surface Finish | Black Oxide / Zinc Plated |
| Standard | DIN 7991 / ISO 10642 |
| Tensile Strength | 1040 MPa (minimum) |
| Yield Strength | 940 MPa (minimum) |
| Hardness | 32–39 HRC |
| Operating Temperature | Up to +250°C |
| Packaging | Box Packing / Poly Bags / Custom Packaging |