Engineered for robust fastening, this M20 x 80mm hex head cap screw is precision manufactured from premium 304 stainless steel. Offering superior corrosion resistance and high tensile strength, it ensures secure and durable connections in critical applications.
| Standard | DIN 933 |
| Material | 304 Stainless Steel |
| Finish | Passivated |
| Grade | N/A |
| Size | M20 |
| Length | 80mm |
| Head Width | 28mm |
Specified by design engineers worldwide, this M20 x 80mm hex head cap screw delivers exceptional performance in corrosive environments. Constructed from 304 stainless steel, it provides a minimum tensile strength of 515 MPa and a yield strength of 205 MPa, ensuring reliable structural integrity. The M20 nominal diameter, 80mm length, and 28mm head width facilitate secure torque application and joint assembly. Its inherent passivation layer offers excellent resistance to oxidation and chemical attack, making it ideal for marine, food processing, and chemical plant applications.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Ensure mating threads are clean and free of debris. 2. Apply a small amount of anti-seize lubricant to the threads if required by the application environment. 3. Thread the cap screw by hand to confirm proper engagement and alignment. 4. Tighten the cap screw to the specified torque value using a calibrated torque wrench, ensuring even pressure distribution.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | DIN 933 |
| 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) | 18.0 - 20.0% |
| Nickel (Ni) | 8.0 - 10.5% |
| Manganese (Mn) | 2.00% max |
| 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 | Good |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Over-tightening the cap screw, leading to thread stripping or component damage. | Always adhere to manufacturer-recommended torque specifications and utilize a calibrated torque wrench. |
| Using the wrong fastener material for the intended environment, resulting in premature corrosion. | Select fasteners made from materials like 304 stainless steel, which offer superior corrosion resistance for specific atmospheric or chemical exposures. |
A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.
A: Marine and offshore equipment, Food and beverage processing machinery, Chemical and petrochemical industry infrastructure, Automotive and aerospace structural 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. | ||||