Engineered for robust connections, this M12 x 138mm hex head cap screw features a durable carbon steel construction and a 17mm head width for reliable torque application in critical industrial assemblies.
| Standard | ASME B18 |
| Material | Carbon Steel |
| Finish | Passivated |
| Grade | N/A |
| Size | M12 |
| Length | 138mm |
| Head Width | 17mm |
A high-performance industrial component, this M12 x 138mm hex head cap screw is manufactured from premium carbon steel, offering superior tensile strength and shear resistance essential for heavy-duty applications. The precise 17mm head width ensures optimal engagement with standard wrenches, facilitating secure tightening and minimizing the risk of cam-out. Its robust design makes it suitable for structural connections, machinery assembly, and infrastructure projects where reliability and load-bearing capacity are 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 torque wrench calibrated to the specified torque value. 2. Ensure the mating threads are clean and free of debris. 3. Thread the cap screw into the prepared hole, applying steady torque until the desired tightness is achieved.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ASME B18 |
| 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) |
|---|---|---|
| M12 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M12 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Moderate |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Over-tightening the screw, leading to thread stripping or material deformation. | Adhere strictly to the recommended torque specifications for the application and materials involved. |
| Using a wrench that does not properly fit the hex head, causing damage to the fastener. | Utilize a correctly sized, high-quality wrench or socket that provides full engagement with the hex head. |
A: This Hex Head Cap Screw, Carbon Steel is manufactured from Carbon Steel.
A: Structural steel connections, Heavy machinery assembly, Industrial equipment mounting.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||