Engineered for superior corrosion resistance and moderate strength, this M20 x 59mm brass hex head cap screw is ideal for environments where galvanic corrosion is a concern. It offers reliable fastening in a range of demanding applications.
| Standard | ASME B18 |
| Material | Brass |
| Finish | Black Oxide |
| Grade | N/A |
| Size | M20 |
| Length | 59mm |
| Head Width | 27mm |
Purpose-built for heavy-duty applications, this M20 x 59mm hex head cap screw is manufactured from high-grade brass, offering excellent resistance to corrosion, particularly in marine and chemical processing environments. The M20 metric thread provides robust load-bearing capacity suitable for securing heavy components. With a nominal head width of 27mm, it allows for the use of standard wrenches and sockets for secure tightening. Its brass composition also offers good electrical conductivity, making it suitable for certain electronic or grounding applications. This fastener is designed to withstand moderate tensile and shear loads, ensuring long-term structural integrity.
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 if recommended for the application. 3. Thread the cap screw by hand to prevent cross-threading. 4. Tighten using a calibrated torque wrench to the specified torque value for the M20 thread size and material strength.
| 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 |
| Copper (Cu) | 60.0 - 63.0% |
| Zinc (Zn) | Balance |
| Lead (Pb) | 2.5 - 3.7% |
| 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 the brass screw, leading to thread stripping or deformation. | Always use a calibrated torque wrench and adhere to the manufacturer's recommended torque specifications for M20 brass fasteners. |
| Using incompatible materials in direct contact, causing galvanic corrosion. | Consult galvanic corrosion charts to ensure compatibility with surrounding materials, especially in marine or high-moisture environments. |
A: This Hex Head Cap Screw, Brass is manufactured from Brass.
A: Marine hardware and fittings, Chemical processing equipment, Electrical grounding connections, Architectural metalwork.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||