This M8 x 124mm hex head cap screw, crafted from robust carbon steel, provides exceptional tensile strength and durability for demanding industrial applications. Its precise dimensions ensure reliable performance in critical assemblies.
| Standard | ISO 9001 |
| Material | Carbon Steel |
| Finish | Galvanized |
| Grade | N/A |
| Size | M8 |
| Length | 124mm |
| Head Width | 25mm |
Specified by design engineers worldwide, this M8 x 124mm hex head cap screw offers a nominal diameter of 8mm and a substantial 124mm length for deep engagement. Manufactured from high-grade carbon steel, it exhibits excellent tensile and shear strength, making it suitable for load-bearing applications. The 25mm head width provides ample surface area for torque application with standard hex tooling, ensuring secure fastening. Typical applications include structural frameworks, heavy machinery assembly, and automotive components where robust and dependable joining is paramount.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate hex wrench or socket matching the 25mm head width. 2. Insert the M8 thread into the tapped hole or through the clearance hole and nut. 3. Apply torque evenly until the specified tension is achieved, avoiding over-tightening.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ISO 9001 |
| Tensile Strength | Standard Commercial Spec |
| Yield Strength | Standard Commercial Spec |
| Hardness | Varies by specific batch |
| Carbon (C) | 0.28 - 0.55% |
| Manganese (Mn) | 0.60 - 0.90% |
| Phosphorus (P) | 0.04% max |
| Sulfur (S) | 0.05% max |
| Bolt Size | Dry Torque (ft-lbs) | Lubricated Torque (ft-lbs) |
|---|---|---|
| M8 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M8 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Excellent |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using an undersized or worn hex wrench, leading to cam-out and potential stripping of the hex socket. | Always use a properly sized, high-quality hex wrench or socket that fits snugly to ensure efficient torque transfer and prevent damage to the screw head. |
| Applying excessive torque, which can lead to thread stripping, fastener fracture, or deformation of the clamped components. | Refer to torque specifications for the application or use a calibrated torque wrench to achieve the recommended tension without overstressing the fastener or joint. |
A: This Hex Head Cap Screw, Carbon Steel is manufactured from Carbon Steel.
A: Industrial Machinery Assembly, Structural Frameworks, Automotive Chassis and Engine Components.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||