This M7x138mm Hex Head Cap Screw, constructed from high-performance polycarbonate, offers superior chemical resistance and electrical insulation. Its robust design ensures secure fastening in demanding industrial applications where traditional metal fasteners are unsuitable.
| Standard | ASME B18 |
| Material | Polycarbonate |
| Finish | Passivated |
| Grade | N/A |
| Size | M7 |
| Length | 138mm |
| Head Width | 18mm |
Precision-manufactured to tight tolerances, this M7x138mm Hex Head Cap Screw is engineered for reliable performance. The polycarbonate material exhibits excellent resistance to a broad spectrum of chemicals, including acids, bases, and solvents, making it ideal for corrosive environments. Its inherent non-conductive properties are crucial for applications involving electrical insulation, preventing short circuits and ensuring operator safety. The M7 thread size and 138mm length provide ample engagement for secure assembly, while the 18mm head width allows for effective torque application with standard tools. This fastener is designed for applications requiring a lightweight, durable, and non-metallic fastening solution.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate M7 tool (e.g., hex wrench or socket) for the head. 2. Ensure the mating threads are clean and free of debris. 3. Insert the screw into the pre-tapped hole or nut, turning clockwise by hand initially to avoid cross-threading. 4. Tighten the screw using the M7 tool to the required torque specification, taking care not to overtighten, as polycarbonate has a lower yield strength than metal.
| 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) |
|---|---|---|
| M7 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M7 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Moderate |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Overtightening, leading to stripping of threads or cracking of the polycarbonate head. | Use a torque wrench to adhere to recommended torque values for polycarbonate fasteners. Avoid excessive force. |
| Using inappropriate tools that could damage the hex head of the polycarbonate screw. | Always use tools designed for hex head fasteners, such as properly sized hex wrenches or sockets, ensuring a snug fit to prevent slippage and damage. |
A: This Hex Head Cap Screw, Polycarbonate is manufactured from Polycarbonate.
A: Electrical enclosures and insulation, Medical equipment assembly, Chemical processing machinery, Corrosion-resistant applications, Food processing equipment.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||