This M20 x 25mm Hex Head Cap Screw, crafted from premium 304 stainless steel, offers superior corrosion resistance and exceptional tensile strength for critical industrial applications.
| Standard | ISO 9001 |
| Material | 304 Stainless Steel |
| Finish | Black Oxide |
| Grade | N/A |
| Size | M20 |
| Length | 25mm |
| Head Width | 32mm |
A high-performance industrial component, this M20 x 25mm Hex Head Cap Screw is engineered for demanding environments. Constructed from 304 stainless steel, it provides excellent resistance to corrosion and oxidation, making it suitable for wet or chemically aggressive conditions. The metric thread pitch ensures precise mating with standard M20 nuts and tapped holes. With a nominal diameter of M20 and a length of 25mm, the screw features a robust hex head with a measured width of 32mm, designed for high torque application with standard hex wrenches or power tools. Its material composition offers a balance of strength and ductility for reliable fastening in 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. Ensure mating threads are clean and free of debris. 2. Thread the hex head cap screw by hand for initial engagement to prevent cross-threading. 3. Tighten the screw to the required torque specification using a calibrated hex wrench or socket.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ISO 9001 |
| 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 screw, leading to thread stripping or material fatigue. | Adhere to the manufacturer's recommended torque values for the specific application and material combination. |
| Using a wrench or socket that does not fully engage with the hex head, causing cam-out and potential damage to the fastener. | Select a wrench or socket that precisely fits the 32mm hex head width for maximum contact and leverage. |
A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.
A: Structural steel erection, Heavy machinery assembly, Marine and offshore equipment.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||