This M4 x 147mm Hex Head Cap Screw, constructed from premium 304 stainless steel, offers superior corrosion resistance and mechanical strength for critical fastening applications. Engineered for reliability.
| Standard | DIN 933 |
| Material | 304 Stainless Steel |
| Finish | Anodized |
| Grade | N/A |
| Size | M4 |
| Length | 147mm |
| Head Width | 31mm |
Manufactured under strict quality controls, this M4 x 147mm hex head cap screw is forged from high-grade 304 stainless steel, renowned for its excellent corrosion resistance, particularly in saline and acidic environments, and its robust tensile strength of approximately 500 MPa. The substantial 31mm head width ensures efficient torque application and secure seating. Its non-magnetic properties and suitability for wide temperature ranges make it ideal for marine, chemical processing, food and beverage, and outdoor infrastructure projects where long-term durability is paramount.
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. Align the screw with the pre-drilled or tapped hole. 3. Using an appropriately sized hex wrench or socket, tighten the screw to the required torque specification, avoiding overtightening.
| 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) |
|---|---|---|
| M4 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M4 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Excellent |
| Marine / Saltwater | Good |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using a wrench that does not fully engage the hex head. | Always use a wrench or socket that precisely fits the 31mm head width to prevent cam-out and damage to the fastener. |
| Applying excessive torque, leading to thread stripping or fastener fatigue. | Consult engineering specifications or use a torque wrench to apply the recommended torque value for M4 threads in the specific substrate material. |
A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.
A: Marine hardware and equipment, Chemical processing plant components, Food and beverage machinery, Outdoor structural assemblies.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||