Engineered for demanding environments, this M20 x 78mm Hex Head Cap Screw is forged from premium 316 stainless steel. Its superior corrosion resistance and robust design ensure reliable, long-lasting fastening in aggressive conditions.
| Standard | ASME B18 |
| Material | 316 Stainless Steel |
| Finish | Galvanized |
| Grade | N/A |
| Size | M20 |
| Length | 78mm |
| Head Width | 31mm |
Precision-manufactured to tight tolerances, this M20 x 78mm hex head cap screw offers exceptional performance. Constructed from 316 stainless steel, it boasts superior resistance to pitting, crevice corrosion, and general corrosion, especially in chloride-rich environments. The material's high tensile strength ensures a secure and durable connection, making it suitable for critical applications. The M20 thread pitch provides significant load-bearing capacity, while the 78mm length allows for versatile use in varying material thicknesses. The 31mm head width ensures adequate bearing surface for torque application and load distribution.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate wrench or socket for the M20 hex head. 2. Ensure mating surfaces are clean and free of debris. 3. Thread the cap screw into the designated tapped hole or nut, applying consistent torque as per design specifications.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ASME B18 |
| Tensile Strength | 75,000 psi (515 MPa) |
| Yield Strength | 30,000 psi (205 MPa) |
| Elongation in 2 in. | 40% min |
| Hardness | Rockwell B95 max |
| Carbon (C) | 0.08% max |
| Chromium (Cr) | 16.0 - 18.0% |
| Nickel (Ni) | 10.0 - 14.0% |
| Molybdenum (Mo) | 2.0 - 3.0% |
| Bolt Size | Dry Torque (ft-lbs) | Lubricated Torque (ft-lbs) |
|---|---|---|
| M20 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M20 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Excellent |
| Marine / Saltwater | Excellent |
| Chemical / Acidic | Good |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using standard stainless steel (e.g., 304) in highly corrosive environments. | Always specify 316 stainless steel for marine, chemical, or saltwater applications due to its superior molybdenum content for enhanced corrosion resistance. |
| Over-tightening the cap screw, leading to thread stripping or material fatigue. | Adhere to recommended torque values based on the material being fastened and the screw's specifications to prevent damage and ensure optimal performance. |
A: This Hex Head Cap Screw, 316 Stainless Steel is manufactured from 316 Stainless Steel.
A: Marine hardware and shipbuilding, Chemical processing equipment, Food and beverage industry machinery, Offshore oil and gas components.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||