This M8x139mm brass hex head cap screw provides superior corrosion resistance and aesthetic appeal. Ideal for applications requiring a strong, visually appealing, and durable fastening solution.
| Standard | ISO 9001 |
| Material | Brass |
| Finish | Passivated |
| Grade | N/A |
| Size | M8 |
| Length | 139mm |
| Head Width | 9mm |
Precision-manufactured to tight tolerances, this M8x139mm brass hex head cap screw ensures reliable and secure fastening. Constructed from high-grade brass (typically UNS C26000 or similar), it exhibits excellent resistance to corrosion, tarnishing, and many chemicals, making it suitable for marine, architectural, and electrical applications. The M8 thread provides a robust connection, while the 139mm length offers significant reach. The 9mm hex head width is compatible with standard M8 hex drivers for efficient installation and removal.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate M8 hex driver or wrench. 2. Insert the screw into the pre-drilled or tapped hole, ensuring threads engage properly. 3. Tighten the screw to the required torque specification, avoiding over-tightening to prevent damage to the brass material or the mating components.
| 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 |
| 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) |
|---|---|---|
| M8 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M8 | 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 excessive force during tightening, which can strip the brass threads or damage the fastener head. | Always use a torque wrench to apply the manufacturer-recommended torque. For brass, lower torque values are generally advisable compared to steel. |
| Incorrect thread engagement, leading to cross-threading and damaged components. | Start the screw by hand for at least two full turns to ensure proper thread alignment before using a tool. |
A: This Hex Head Cap Screw, Brass is manufactured from Brass.
A: Marine hardware and fittings, Architectural trim and fixtures, Electrical enclosures and connectors.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||