Engineered for robust fastening, this M12 x 31mm hex cap screw is crafted from high-grade 304 stainless steel. Its superior corrosion resistance and strength make it ideal for critical joints in demanding environments.
| Standard | ISO 9001 |
| Material | 304 Stainless Steel |
| Finish | Plain |
| Grade | N/A |
| Size | M12 |
| Length | 31mm |
| Head Width | 27mm |
Built to exacting engineering tolerances, this M12 x 31mm hex head cap screw features a nominal diameter of 12mm and a shank length of 31mm. The hexagonal head presents a wrenching surface with a measured width of 27mm, ensuring secure torque application. Fabricated from premium 304 stainless steel, it offers exceptional resistance to corrosion, oxidation, and a wide range of chemicals, making it suitable for outdoor, marine, and food-grade environments. The inherent tensile strength of 304 stainless steel ensures reliable load-bearing capacity in structural assemblies and mechanical equipment.
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 (27mm for this screw). 2. Ensure the mating threads are clean and free of obstructions. 3. Thread the screw into the component by hand to verify proper engagement and prevent cross-threading. 4. Tighten the screw to the specified torque using a calibrated torque wrench.
| 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) |
|---|---|---|
| M12 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M12 | 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 cam-out and damaged screw heads. | Always use a wrench or socket that precisely matches the 27mm head width of the screw. |
| Over-tightening, which can strip threads or compromise the integrity of the components being joined. | Refer to engineering specifications or torque charts for the correct tightening torque for M12 fasteners in the specific application. |
| Using a steel screw in a corrosive environment, leading to premature rust and failure. | Utilize 304 stainless steel for its superior corrosion resistance in environments prone to moisture or chemical exposure. |
A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.
A: Structural steel connections, Machinery and equipment assembly, Outdoor and marine hardware installations.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||