Engineered for robust connections, this M18 x 128mm hex head cap screw is crafted from high-grade carbon steel. Featuring a 25mm head width for superior torque application, it's ideal for critical structural and mechanical assemblies requiring exceptional strength and durability.
| Standard | DIN 933 |
| Material | Carbon Steel |
| Finish | Passivated |
| Grade | N/A |
| Size | M18 |
| Length | 128mm |
| Head Width | 25mm |
Trusted by engineers across multiple sectors, this M18 x 128mm hex head cap screw is manufactured from premium carbon steel, offering excellent tensile strength and durability for demanding industrial environments. The precise M18 thread specification ensures secure engagement with standard nuts and tapped holes, while the 128mm nominal length provides ample reach for varied assembly thicknesses. The 25mm hexagonal head is designed for optimal wrench grip, facilitating controlled tightening and maximizing torque transfer, crucial for applications in construction, heavy machinery, and automotive manufacturing where structural integrity 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 wrench size (25mm) for the hex head. 2. Ensure the mating thread or nut is clean and free of debris. 3. Insert the screw and engage the threads, tightening to the required torque specification for the application.
| 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) |
|---|---|---|
| M18 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M18 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Moderate |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using an undersized or incorrect wrench, leading to head stripping. | Always use a properly sized 25mm wrench or socket to ensure maximum engagement and prevent damage to the hex head. |
| Over-tightening, which can lead to thread damage or screw fracture. | Adhere to the recommended torque values for the specific application and material being fastened. Consult engineering drawings or torque charts. |
A: This Hex Head Cap Screw, Carbon Steel is manufactured from Carbon Steel.
A: Structural steel connections, Heavy machinery assembly, Automotive chassis and powertrain 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. | ||||