Engineered for superior performance, this M4x13mm Hex Cap Screw, crafted from premium 316 stainless steel, offers exceptional corrosion resistance and durability for critical fastening needs.
| Standard | DIN 933 |
| Material | 316 Stainless Steel |
| Finish | Black Oxide |
| Grade | N/A |
| Size | M4 |
| Length | 13mm |
| Head Width | 21mm |
Designed for demanding industrial environments, this M4x13mm hex head cap screw features a robust 316 stainless steel construction, providing superior resistance to corrosion, pitting, and crevice attack in harsh marine, chemical, and food processing applications. The M4 thread size ensures precise engagement, while the 13mm length offers ample fastening depth. Its 21mm head width allows for secure tightening with standard hex drivers, ensuring reliable joint integrity under significant stress and environmental exposure.
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 driver for the 21mm head width. 2. Insert the M4x13mm screw into the pre-drilled or tapped hole. 3. Tighten the screw to the required torque specification, ensuring a secure and stable fastening.
| 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 standard stainless steel in highly corrosive environments. | Always specify 316 stainless steel for superior corrosion resistance in marine, chemical, or saltwater applications. |
| Overtightening with excessive force. | Use a calibrated torque wrench to achieve the manufacturer's recommended torque to prevent thread stripping or material fatigue. |
A: This Hex Head Cap Screw, 316 Stainless Steel is manufactured from 316 Stainless Steel.
A: Marine hardware and equipment, Chemical processing equipment, Food and beverage processing machinery, Outdoor and coastal structures.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||