This industrial-grade M12 x 129mm hex head cap screw, crafted from robust carbon steel, offers superior tensile strength and durability. Featuring a 35mm head width for reliable torque application, it's engineered for critical structural and mechanical assemblies.
| Standard | ASME B18 |
| Material | Carbon Steel |
| Finish | Plain |
| Grade | N/A |
| Size | M12 |
| Length | 129mm |
| Head Width | 35mm |
Precision-manufactured to tight tolerances, this M12 x 129mm hex head cap screw is constructed from high-grade carbon steel, ensuring exceptional tensile strength and shear resistance. The nominal thread diameter is M12, with a nominal length of 129mm. The head width measures 35mm, providing ample surface area for secure tightening with standard hex drivers or wrenches. This material composition offers a balance of strength and cost-effectiveness, making it suitable for a wide range of industrial environments. Its robust design facilitates secure connections in applications subjected to significant mechanical stress and vibration.
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 from debris. 2. Insert the cap screw through the assembled components, verifying proper thread engagement. 3. Apply torque incrementally using a calibrated torque wrench to the specified value for the application, ensuring a secure and stable joint.
| 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 component damage. | Always use a calibrated torque wrench and adhere to recommended torque specifications for the specific application and materials being joined. |
| Using a screw of the incorrect size or length, compromising the integrity of the joint. | Carefully verify the required screw diameter and length against the design specifications before installation. |
A: This Hex Head Cap Screw, Carbon Steel is manufactured from Carbon Steel.
A: Structural steel framing and connections, Heavy machinery and equipment assembly, Automotive and transportation chassis 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. | ||||