This M21 x 71mm Nylon Hex Head Cap Screw offers superior chemical resistance and non-conductive properties. Its robust nylon construction ensures reliable fastening in corrosive environments and where electrical insulation is paramount.
| Standard | ASTM A106 |
| Material | Nylon |
| Finish | Black Oxide |
| Grade | N/A |
| Size | M21 |
| Length | 71mm |
| Head Width | 19mm |
Precision-manufactured to tight tolerances, this M21 x 71mm Nylon Hex Head Cap Screw features a nominal diameter of M21 and a total length of 71mm. The head width measures 19mm, providing ample surface area for torque application. Constructed from high-performance nylon, it exhibits excellent resistance to a broad spectrum of chemicals, solvents, and moisture, preventing corrosion and degradation common with metallic fasteners. This material also offers inherent electrical insulation, making it ideal for applications where conductivity must be avoided. Its lightweight nature further contributes to ease of handling and installation in various industrial and consumer products.
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 of debris. 2. Thread the M21x71mm Nylon Hex Head Cap Screw into the designated receptacle by hand until snug. 3. Using an appropriate wrench or socket, tighten the cap screw to the required torque specification, avoiding over-tightening 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 | 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) |
|---|---|---|
| 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 nylon screw, leading to thread stripping or head damage. | Consult application-specific torque charts or use a torque wrench set to the manufacturer's recommended limit for nylon fasteners. |
| Using the wrong size tool, which can round the hex head and impede proper tightening or removal. | Always use a properly sized hex wrench or socket that fits snugly to ensure maximum engagement with the head. |
A: This Hex Head Cap Screw, Nylon is manufactured from Nylon.
A: Chemical processing equipment, Medical device assembly, Electrical enclosures and insulation.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||