This M12 x 129mm hex head cap screw, fabricated from robust carbon steel, offers superior clamping force and durability. Its hex head design ensures efficient torque application for secure fastening in demanding industrial environments.
| Standard | ISO 9001 |
| Material | Carbon Steel |
| Finish | Passivated |
| Grade | N/A |
| Size | M12 |
| Length | 129mm |
| Head Width | 26mm |
Precision-manufactured to tight tolerances, this M12 x 129mm hex head cap screw features a nominal diameter of 12mm and an overall length of 129mm. The head exhibits a nominal width of 26mm, facilitating secure engagement with standard hex wrenches or sockets. Composed of high-grade carbon steel, it provides excellent tensile strength and shear resistance, crucial for structural integrity in load-bearing applications. Surface hardness and material composition conform to industry standards, ensuring reliable performance under stress and repeated use. This fastener is ideal for assembling machinery, construction frameworks, and critical infrastructure where a strong, dependable connection 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 appropriately sized wrench or socket for the 26mm hex head. 2. Ensure threads are clean and free from debris before insertion. 3. Tighten the cap screw to the recommended torque specification for the M12 size and the connected materials, utilizing a calibrated torque wrench for accuracy.
| 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) |
|---|---|---|
| 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 |
|---|---|
| Using the wrong size wrench, leading to stripped hex heads and improper torque. | Always use a wrench or socket that precisely matches the 26mm hex head width for optimal engagement and torque transfer. |
| Over-tightening the screw, which can cause thread stripping or component damage. | Adhere to the specified torque values for the M12 thread size and the materials being joined. Employ a calibrated torque wrench. |
| Using screws with damaged threads, compromising the integrity of the connection. | Inspect all fasteners for thread damage before installation. Discard any screws that show signs of wear or damage. |
A: This Hex Head Cap Screw, Carbon Steel is manufactured from Carbon Steel.
A: Heavy machinery assembly, Structural steel connections, Industrial equipment manufacturing.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||