This M13 x 21mm hex head cap screw, crafted from robust carbon steel, ensures exceptional strength and reliability. Its precise dimensions and durable material make it a cornerstone for demanding fastening applications.
| Standard | ISO 9001 |
| Material | Carbon Steel |
| Finish | Anodized |
| Grade | N/A |
| Size | M13 |
| Length | 21mm |
| Head Width | 13mm |
Precision-manufactured to tight tolerances, this M13 x 21mm hex head cap screw boasts a 13mm head width, enabling secure torque application with standard tooling. Constructed from high-grade carbon steel, it offers excellent tensile strength and resistance to deformation under load, making it suitable for structural assemblies and heavy-duty machinery. Its unthreaded shank above the threads ensures a bearing surface for controlled clamping and prevents thread galling in critical joints. The material's inherent hardness and toughness provide long-term performance in vibration-prone environments and moderate corrosive conditions.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select appropriate wrench size (13mm) to fit the hex head. 2. Ensure mating threads are clean and free from debris. 3. Apply consistent torque to achieve desired clamping force, avoiding over-tightening.
| 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) |
|---|---|---|
| M13 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M13 | 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 incorrect size wrench, leading to head stripping. | Always use a wrench that precisely matches the 13mm head width to ensure proper engagement and prevent damage. |
| Over-tightening, which can yield the bolt or damage the mating material. | Consult engineering specifications for the required torque value and use a calibrated torque wrench for accurate application. |
A: This Hex Head Cap Screw, Carbon Steel is manufactured from Carbon Steel.
A: Industrial machinery assembly, Structural steel connections, Automotive 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. | ||||