Engineered for superior performance in challenging environments, this M20 x 126mm hex head cap screw is crafted from robust 304 stainless steel, offering exceptional corrosion resistance and tensile strength.
| Standard | DIN 933 |
| Material | 304 Stainless Steel |
| Finish | Black Oxide |
| Grade | N/A |
| Size | M20 |
| Length | 126mm |
| Head Width | 34mm |
Purpose-built for heavy-duty applications, this M20 x 126mm hex head cap screw offers exceptional performance and durability. Constructed from premium 304 stainless steel, it exhibits superior resistance to corrosion and oxidation, making it ideal for use in harsh industrial, marine, and chemical processing environments. The M20 nominal diameter and 126mm length provide significant clamping force and structural integrity. Its robust hex head, measuring 34mm across flats, allows for high torque application with standard tooling, ensuring secure and reliable fastening. This fastener meets rigorous industry standards for strength and material composition.
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. Hand-thread the cap screw to confirm proper engagement and alignment. 3. Tighten the cap screw to the manufacturer's recommended torque specification using calibrated tooling.
| 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 bolt failure. | Always adhere to the specified torque values for the application and use a torque wrench for precise control. |
| Using the wrong size wrench or tool, which can round the hex head and prevent proper tightening. | Utilize a properly sized, high-quality wrench or socket that fits snugly onto the hex head. |
A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.
A: Structural steel connections, Marine equipment assembly, Heavy machinery mounting.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||