This M20 x 129mm Hex Head Cap Screw, constructed from robust carbon steel, offers exceptional tensile strength and durability. Engineered for secure and reliable fastening in critical industrial applications.
| Standard | DIN 933 |
| Material | Carbon Steel |
| Finish | Plain |
| Grade | N/A |
| Size | M20 |
| Length | 129mm |
| Head Width | 16mm |
A proven choice for industrial professionals, this M20 x 129mm Hex Head Cap Screw is manufactured from high-grade carbon steel, ensuring superior tensile strength and shear resistance for demanding applications. The M20 nominal diameter, coupled with a 129mm length, provides ample engagement for secure connections. Its 16mm hexagonal head width allows for high torque application with standard tooling, making it ideal for heavy machinery, structural assembly, and general engineering where reliability is paramount.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Ensure mating threads are clean and free of debris. 2. Apply appropriate lubricant or anti-seize compound if specified for the application. 3. Thread the cap screw into the designated hole, ensuring smooth engagement. 4. Tighten to the recommended torque specification using a calibrated torque wrench.
| 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) |
|---|---|---|
| M20 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M20 | 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 leading to thread stripping or material deformation. | Always adhere to the manufacturer's recommended torque specifications for the specific application and materials being joined. |
| Using a fastener with insufficient length for proper thread engagement. | Verify that the screw length provides at least 1.5 to 2 full threads beyond the point of engagement with the mating component. |
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. | ||||