This M7 x 40mm hex head cap screw, forged from corrosion-resistant 304 stainless steel, offers superior strength and durability for critical fastening applications. Its robust design ensures reliable performance in harsh environments.
| Standard | ISO 9001 |
| Material | 304 Stainless Steel |
| Finish | Galvanized |
| Grade | N/A |
| Size | M7 |
| Length | 40mm |
| Head Width | 21mm |
A high-performance industrial component, this M7 x 40mm hex head cap screw features a nominal diameter of 7mm and a thread length of 40mm. Constructed from premium 304 (A2) stainless steel, it exhibits excellent tensile strength and exceptional resistance to corrosion, rust, and oxidation, making it ideal for marine, chemical processing, and outdoor construction environments. The precisely machined hex head provides a 21mm across flats width, ensuring optimal torque transfer with standard hex wrenches or sockets for secure and reliable assembly.
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 or socket size for the 21mm hex head. 2. Thread the M7 x 40mm cap screw into the mating component, ensuring smooth engagement of threads. 3. Apply torque according to design specifications to achieve secure fastening without over-tightening.
| 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) |
|---|---|---|
| M7 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M7 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Excellent |
| Marine / Saltwater | Good |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using incorrect tool size, leading to stripping of the hex head. | Always use a properly sized 21mm hex wrench or socket for consistent torque application and to prevent damage. |
| Over-tightening, which can compromise the threads or the component being fastened. | Adhere to specified torque values; consult engineering drawings or best practices for your application. |
A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.
A: Machinery and equipment assembly, Structural steel connections, Marine hardware and fixtures.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||