This M7 x 79mm Hex Head Cap Screw offers exceptional impact resistance and chemical inertness. Manufactured from high-grade polycarbonate, it provides a lightweight, non-conductive, and corrosion-free fastening solution for diverse environments.
| Standard | ASME B18 |
| Material | Polycarbonate |
| Finish | Galvanized |
| Grade | N/A |
| Size | M7 |
| Length | 79mm |
| Head Width | 9mm |
Built to exacting engineering tolerances, this M7 x 79mm Hex Head Cap Screw features a nominal diameter of 7mm and an overall length of 79mm. The head width measures 9mm, ensuring compatibility with standard M7 hex drivers. Constructed from virgin polycarbonate resin, it exhibits superior tensile strength for its weight, excellent dielectric properties, and remarkable resistance to a broad spectrum of chemicals and UV radiation. This material also offers a high degree of impact absorption, making it ideal for applications where vibration or shock is a concern, and environments where traditional metal fasteners would corrode or conduct electricity.
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 for the hex head. 2. Align the screw with the pre-drilled or tapped hole. 3. Engage the tool and tighten the screw steadily, avoiding over-torquing to prevent stripping. 4. Ensure a secure but not excessively strained fit.
| 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 | Excellent |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Over-torquing the polycarbonate screw, leading to thread stripping or head deformation. | Use a torque wrench set to the recommended specification for polycarbonate fasteners. Tighten until snug, then apply minimal additional force. |
| Using the wrong size tool, potentially damaging the hex socket or failing to properly engage the screw. | Always verify the tool size matches the M7 specification for the hex head. Ensure the tool is fully seated in the socket before applying torque. |
A: This Hex Head Cap Screw, Polycarbonate is manufactured from Polycarbonate.
A: Electrical enclosures and equipment mounting, Corrosive chemical processing environments, Lightweight structural assembly in aerospace and automotive.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||