This M21x144mm brass hex head cap screw offers superior corrosion resistance and excellent electrical conductivity. Its inherent ductility ensures reliable fastening in demanding environments. Engineered for longevity and performance.
| Standard | ASME B18 |
| Material | Brass |
| Finish | Passivated |
| Grade | N/A |
| Size | M21 |
| Length | 144mm |
| Head Width | 21mm |
A high-performance industrial component, this M21x144mm brass hex head cap screw is manufactured from solid brass, providing exceptional resistance to corrosion, particularly in marine and humid environments. The M21 metric thread size, combined with a length of 144mm and a nominal head width of 21mm, ensures robust mechanical fastening. Brass's inherent ductility allows for slight deformation under load without fracturing, making it suitable for applications where vibration or thermal expansion is a factor. Furthermore, its excellent electrical conductivity makes it a preferred choice for electrical and electronic assemblies.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Ensure the mating threads are clean and free from debris. 2. Engage the cap screw by hand to verify thread alignment and prevent cross-threading. 3. Tighten the cap screw using an appropriate wrench, applying steady torque to the desired specification, avoiding overtightening.
| 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) |
|---|---|---|
| M21 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M21 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Moderate |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Cross-threading the fastener by forcing it into the mating component. | Always start threading by hand to confirm proper alignment before using a tool. |
| Using excessive torque, which can strip the threads or damage the component. | Refer to torque specifications for the specific application and materials, and use a calibrated torque wrench. |
A: This Hex Head Cap Screw, Brass is manufactured from Brass.
A: Marine hardware and fittings, Electrical connectors and grounding systems, Architectural decorative elements and fixtures.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||