Engineered for robust load-bearing applications, this M15x138mm hex head cap screw is forged from high-strength carbon steel. Its substantial 28mm head width ensures secure torque application and superior structural integrity.
| Standard | DIN 933 |
| Material | Carbon Steel |
| Finish | Zinc Plated |
| Grade | N/A |
| Size | M15 |
| Length | 138mm |
| Head Width | 28mm |
Manufactured under strict quality controls, this M15x138mm hex head cap screw is constructed from premium carbon steel, offering excellent tensile strength and resistance to deformation. The metric thread profile ensures precise and reliable engagement. The 28mm hex head width is optimized for standard tooling, facilitating efficient installation and disassembly. This screw is ideal for heavy-duty machinery, structural assemblies, and applications requiring sustained clamping force under significant mechanical stress.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Ensure the mating threads are clean and free of debris. 2. Hand-tighten the screw to verify proper thread engagement. 3. Using an appropriate wrench or socket, tighten the screw to the specified torque value for the application, ensuring even pressure distribution.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | DIN 933 |
| 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) |
|---|---|---|
| M15 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M15 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Excellent |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Over-tightening the screw, leading to thread stripping or fastener fatigue. | Always adhere to the recommended torque specifications for the application. Use a calibrated torque wrench. |
| Using the wrong size wrench, which can damage the hex head and prevent proper torque application. | Utilize a wrench or socket that precisely matches the 28mm head width of the cap screw. |
A: This Hex Head Cap Screw, Carbon Steel is manufactured from Carbon Steel.
A: Heavy machinery assembly, Structural steel framing, Automotive and aerospace 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. | ||||