These M20 x 72mm hex head cap screws, manufactured from premium 304 stainless steel, offer superior corrosion resistance and robust tensile strength for critical fastening in harsh environments.
| Standard | ASME B18 |
| Material | 304 Stainless Steel |
| Finish | Plain |
| Grade | N/A |
| Size | M20 |
| Length | 72mm |
| Head Width | 13mm |
Built to exacting engineering tolerances, these M20 x 72mm hex head cap screws are precision-engineered from AISI 304 stainless steel. This austenitic chromium-nickel alloy provides exceptional resistance to atmospheric corrosion, oxidation, and a wide range of chemical agents, making it ideal for marine, food processing, and chemical plant applications. The M20 thread form ensures high load-bearing capacity, while the 72mm length and 13mm head width are critical dimensions for specific assembly requirements, guaranteeing a secure and reliable connection in demanding structural and mechanical assemblies.
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 size (13mm for this M20 screw). 2. Thread the screw into the pre-tapped hole or nut, ensuring smooth engagement of threads. 3. Tighten to the specified torque value using a calibrated torque wrench to achieve optimal clamping force without overstressing the fastener or component.
| 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) | 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 |
|---|---|
| Using the wrong size wrench, leading to stripped hex heads. | Always use the correct size wrench (13mm for M20) to ensure proper engagement and prevent damage to the fastener head. |
| Cross-threading the screw, damaging both the screw and the mating threads. | Start threading the screw by hand to confirm proper alignment before applying any torque. |
A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.
A: Structural steel connections, Machinery and equipment assembly, Marine and offshore environments.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||