Engineered for superior chemical resistance and electrical insulation, this M4 x 66mm polycarbonate hex head cap screw offers a robust and lightweight fastening solution for critical industrial applications.
| Standard | ASTM A106 |
| Material | Polycarbonate |
| Finish | Passivated |
| Grade | N/A |
| Size | M4 |
| Length | 66mm |
| Head Width | 34mm |
Designed for demanding industrial environments, this M4 x 66mm hex head cap screw is precision manufactured from high-strength, impact-resistant polycarbonate. Its excellent dielectric properties make it ideal for applications where electrical conductivity is a concern. The material exhibits exceptional resistance to a wide range of chemicals, including acids, alkalis, and solvents, ensuring longevity in corrosive atmospheres. The generous 34mm head width provides a broad bearing surface, distributing load effectively and preventing damage to delicate substrates. Its lightweight nature further contributes to ease of handling and assembly, reducing overall system weight.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select appropriate tooling for polycarbonate fasteners to avoid over-torquing or cracking. 2. Hand-thread the screw initially to ensure proper alignment and prevent cross-threading. 3. Tighten the screw to the required torque specification, ensuring a secure fit without stripping the threads or deforming the head.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ASTM A106 |
| 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) |
|---|---|---|
| M4 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M4 | 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 polycarbonate screw, leading to thread stripping or head fracture. | Use a torque-limiting screwdriver or wrench and adhere to recommended torque values for polycarbonate fasteners. |
| Using metal tools that can scratch or damage the surface of the polycarbonate screw. | Employ plastic or nylon tools when possible, or ensure metal tools are free of burrs and used with care. |
A: This Hex Head Cap Screw, Polycarbonate is manufactured from Polycarbonate.
A: Chemical processing equipment, Medical device enclosures, Electronics and circuit board mounting, Food and beverage machinery, Marine environments.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||