Engineered for superior performance, this M20x40mm hex head cap screw is crafted from high-grade 316 stainless steel, offering exceptional corrosion resistance and mechanical strength for critical applications.
| Standard | ASTM A106 |
| Material | 316 Stainless Steel |
| Finish | Black Oxide |
| Grade | N/A |
| Size | M20 |
| Length | 40mm |
| Head Width | 15mm |
Specified by design engineers worldwide, this M20x40mm hex head cap screw features a nominal diameter of M20 and a length of 40mm. The head width is precisely machined to 15mm, ensuring compatibility with standard tooling. Constructed from 316 stainless steel, it exhibits excellent resistance to pitting and crevice corrosion in aggressive environments, including saltwater and chemical processing. Its robust design provides high tensile strength and reliable load-bearing capabilities, making it ideal for marine, chemical, food processing, and outdoor infrastructure projects where durability and longevity are paramount.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate socket wrench or driver for the 15mm hex head. 2. Ensure the mating threads are clean and free from debris. 3. Thread the cap screw by hand to start, then use the wrench to tighten to the specified torque, avoiding over-tightening.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ASTM A106 |
| 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 the wrong size wrench, leading to stripped head corners. | Always use a correctly sized socket or wrench that fully engages the hex head flats. |
| Cross-threading the screw, damaging both the screw and the receiving thread. | Initiate threading by hand for at least two full rotations to confirm proper alignment before applying mechanical force. |
A: This Hex Head Cap Screw, 316 Stainless Steel is manufactured from 316 Stainless Steel.
A: Marine hardware and offshore structures, Chemical processing equipment, Food and beverage industry machinery, Architectural and construction projects in corrosive 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. | ||||