This M21 x 70mm Nylon Hex Head Cap Screw provides a lightweight, corrosion-resistant, and electrically insulating fastening solution. Its robust nylon construction ensures reliable performance in demanding environments.
| Standard | ASME B18 |
| Material | Nylon |
| Finish | Zinc Plated |
| Grade | N/A |
| Size | M21 |
| Length | 70mm |
| Head Width | 35mm |
Engineered for reliability and performance, this M21 x 70mm hex head cap screw is manufactured from high-strength, durable nylon. With a head width of 35mm, it offers a broad bearing surface for secure fastening. Nylon's inherent properties include excellent chemical resistance to many solvents and acids, low friction, and non-conductivity, making it suitable for applications where galvanic corrosion is a concern or electrical insulation is required. Its temperature range and tensile strength are optimized for general-purpose industrial and commercial use, providing a lightweight alternative to metal fasteners.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Ensure the mating threads are clean and free from debris. 2. Manually thread the M21 x 70mm Nylon Hex Head Cap Screw into the receiving component until snug. 3. Using an appropriately sized wrench or socket, tighten the screw to the desired torque, avoiding over-tightening to prevent thread stripping.
| 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) |
|---|---|---|
| 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 | Excellent |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Over-tightening the nylon screw, which can lead to thread deformation or head cracking. | Use a torque wrench to apply the recommended torque value for nylon fasteners. If a torque wrench is unavailable, tighten until snug and then apply an additional quarter turn. |
| Using the screw in applications exceeding its maximum temperature rating, compromising material integrity. | Consult the technical data sheet for the specific nylon grade to confirm its operating temperature range and ensure it aligns with the application's environmental conditions. |
A: This Hex Head Cap Screw, Nylon is manufactured from Nylon.
A: Electrical enclosures and equipment mounting, Chemical processing equipment, Lightweight structural assemblies, Medical device manufacturing.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||