This M21 x 55mm Nylon Hex Head Cap Screw provides robust, corrosion-resistant fastening. Its non-conductive and chemically inert properties make it ideal for environments where metal fasteners would degrade or interfere.
| Standard | DIN 933 |
| Material | Nylon |
| Finish | Anodized |
| Grade | N/A |
| Size | M21 |
| Length | 55mm |
| Head Width | 35mm |
Built to exacting engineering tolerances, this M21 x 55mm Nylon Hex Head Cap Screw (35mm head width) is manufactured from high-grade engineering nylon, offering exceptional tensile strength and resistance to a wide range of chemicals, solvents, and moisture. Its dielectric properties eliminate electrical conductivity, making it suitable for sensitive electronic assemblies and environments where galvanic corrosion is a concern. The material's inherent flexibility absorbs vibration and shock, extending the service life of connected components. Ideal for applications requiring lightweight, durable, and non-reactive fastening solutions in marine, chemical processing, and electrical industries.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate mating hole and ensure it is clean and free of debris. 2. Thread the M21 x 55mm Nylon Hex Head Cap Screw into the mating component by hand or with a suitable driver, ensuring smooth engagement of threads. 3. Tighten the fastener to the required torque using a calibrated torque wrench, avoiding overtightening to prevent thread stripping or material deformation.
| 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 |
|---|---|
| Overtightening nylon fasteners. | Use a calibrated torque wrench and adhere to recommended torque specifications for nylon fasteners to prevent thread damage and material compromise. |
| Using in applications exceeding temperature or chemical resistance limits. | Verify the operating temperature range and chemical compatibility of engineering nylon against the specific application environment before deployment. |
A: This Hex Head Cap Screw, Nylon is manufactured from Nylon.
A: Chemical Processing Equipment, Marine Hardware, Electrical Enclosures, Medical Devices, Food Processing Machinery.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||