Engineered for robust fastening in demanding environments, this M20x49mm Hex Head Cap Screw is manufactured from high-strength Aluminum 6061. It offers superior corrosion resistance and a lightweight profile for diverse industrial applications.
| Standard | ASME B18 |
| Material | Aluminum 6061 |
| Finish | Galvanized |
| Grade | N/A |
| Size | M20 |
| Length | 49mm |
| Head Width | 15mm |
Specified by design engineers worldwide, this M20x49mm Hex Head Cap Screw leverages the exceptional properties of Aluminum 6061, a precipitation-hardened alloy known for its excellent strength-to-weight ratio, corrosion resistance, and good weldability. The M20 thread provides substantial load-bearing capacity, while the 49mm length ensures adequate grip in medium-thickness components. The 15mm hex head width is optimized for standard tooling, facilitating efficient assembly and disassembly. This fastener is ideal for applications requiring a balance of mechanical performance and material lightness, such as aerospace, marine, and general structural fabrication.
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. Insert the M20x49mm Hex Head Cap Screw through the components to be joined. 3. Tighten the screw using appropriate tooling to the recommended torque specification for Aluminum 6061, avoiding over-tightening.
| 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 |
| 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 | Excellent |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using excessive force, leading to thread stripping or material deformation. | Consult material specifications and torque charts for Aluminum 6061 to determine the correct tightening torque. Utilize a torque wrench for precise application. |
| Inadequate thread engagement due to insufficient screw length. | Verify that at least 1.5 to 2 times the screw's nominal diameter (M20) is engaged within the receiving thread for optimal holding power. |
A: This Hex Head Cap Screw, Aluminum 6061 is manufactured from Aluminum 6061.
A: Structural framing in aerospace and automotive industries, Marine hardware and equipment assembly, Lightweight machinery and robotics construction.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||