A high-performance M4 x 42mm hex head cap screw crafted from premium 316 stainless steel. Engineered for exceptional corrosion resistance and superior strength in demanding environments.
| Standard | DIN 933 |
| Material | 316 Stainless Steel |
| Finish | Galvanized |
| Grade | N/A |
| Size | M4 |
| Length | 42mm |
| Head Width | 20mm |
Specified by design engineers worldwide, this M4 x 42mm hex head cap screw offers robust fastening capabilities. Constructed from marine-grade 316 stainless steel, it provides exceptional resistance to pitting, crevice corrosion, and general corrosion, particularly in saline and chemical-laden atmospheres. The M4 thread ensures precise engagement, while the 42mm length offers versatile application depth. The generous 20mm head width facilitates secure torque application with standard hex tools, making it ideal for structural assemblies in marine, food processing, chemical processing, and pharmaceutical industries where hygiene and material integrity 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 hex wrench for the M4 thread and 20mm head width. 2. Align the screw with the pre-drilled or tapped receiving hole. 3. Turn the screw clockwise to engage the threads and tighten to the specified torque value, ensuring a secure fit without over-tightening.
| 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 hex wrench, leading to head damage or incomplete tightening. | Always use the correct size hex wrench that fits snugly into the screw head recess. |
| Cross-threading the screw by forcing it into the receiving hole, damaging both the screw and the mating threads. | Start threading the screw by hand for the first few turns to ensure proper alignment and prevent cross-threading. |
A: This Hex Head Cap Screw, 316 Stainless Steel is manufactured from 316 Stainless Steel.
A: Marine hardware and fittings, Chemical processing equipment, Food and beverage machinery, Pharmaceutical manufacturing, Outdoor and 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. | ||||