Engineered for demanding applications, this M4 x 138mm hex head cap screw is crafted from superior 316 stainless steel. Its robust design ensures exceptional corrosion resistance and superior mechanical performance in harsh industrial settings.
| Standard | DIN 933 |
| Material | 316 Stainless Steel |
| Finish | Anodized |
| Grade | N/A |
| Size | M4 |
| Length | 138mm |
| Head Width | 30mm |
A high-performance industrial component, this M4 x 138mm hex head cap screw features a nominal diameter of M4 and a substantial length of 138mm, providing excellent reach for deep-threaded assemblies. The generous 30mm head width allows for high torque application and secure fastening, even under significant load. Constructed from premium 316 stainless steel, it offers exceptional resistance to a wide range of corrosive agents, including chlorides, making it ideal for marine, chemical processing, and food-grade applications where material integrity is paramount. Its austenitic structure ensures good ductility and toughness at cryogenic temperatures.
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 from debris. 2. Hand-thread the screw to confirm alignment and prevent cross-threading. 3. Tighten the screw to the specified torque using an appropriate hex socket wrench.
| 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) | 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) |
|---|---|---|
| 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 | Excellent |
| Chemical / Acidic | Good |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using the wrong size wrench, leading to fastener damage. | Always use a properly sized hex socket wrench that fits snugly to the head. |
| Overtightening, which can strip threads or compromise material integrity. | Adhere to recommended torque specifications for the specific application and materials being joined. |
A: This Hex Head Cap Screw, 316 Stainless Steel is manufactured from 316 Stainless Steel.
A: Marine equipment assembly, Chemical processing machinery, Food and beverage industry equipment, Outdoor structural components.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||