Engineered for demanding environments, this M21x32mm Polycarbonate Hex Head Cap Screw offers exceptional chemical resistance and non-conductive properties. A reliable choice for secure fastening in corrosive or electrically sensitive applications.
| Standard | DIN 933 |
| Material | Polycarbonate |
| Finish | Plain |
| Grade | N/A |
| Size | M21 |
| Length | 32mm |
| Head Width | 15mm |
A proven choice for industrial professionals, this M21x32mm Hex Head Cap Screw is manufactured from high-performance polycarbonate. Its robust chemical inertness makes it ideal for applications exposed to a wide range of acids, bases, and solvents, preventing degradation and ensuring long-term structural integrity. The M21 thread size and 32mm length provide substantial clamping force, while the 15mm head width ensures compatibility with standard tooling. Polycarbonate's inherent dielectric strength also makes it suitable for electrical assemblies where conductivity is a concern, offering a lightweight yet durable 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 tool (e.g., socket wrench) for the M21 hex head. 2. Align the screw with the pre-drilled or tapped hole in the mating components. 3. Manually thread the screw until initial engagement, ensuring no cross-threading. 4. Tighten the screw to the desired torque, avoiding over-tightening which can damage the polycarbonate material.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | DIN 933 |
| 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) |
|---|---|---|
| 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 |
|---|---|
| Over-tightening the screw, leading to cracking or stripping of the polycarbonate threads. | Use a torque wrench set to the manufacturer's recommended torque value for polycarbonate fasteners or tighten with caution until snug. |
| Using metal tools that can scratch or damage the polycarbonate surface. | Employ tools made of softer materials or ensure careful handling to prevent cosmetic damage. |
A: This Hex Head Cap Screw, Polycarbonate is manufactured from Polycarbonate.
A: Chemical processing equipment, Medical device assembly, Electrical enclosure fastening.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||