Engineered for superior performance, this M20 x 49mm hex head cap screw offers exceptional strength and corrosion resistance. Crafted from premium 316 stainless steel, it ensures reliable fastening in critical applications.
| Standard | DIN 933 |
| Material | 316 Stainless Steel |
| Finish | Zinc Plated |
| Grade | N/A |
| Size | M20 |
| Length | 49mm |
| Head Width | 25mm |
A high-performance industrial component, this M20 x 49mm hex head cap screw is manufactured from high-grade 316 stainless steel, renowned for its superior resistance to pitting and crevice corrosion, particularly in saline or chemically aggressive environments. The M20 designation signifies a nominal diameter of 20mm, with a precise 49mm length from the underside of the head to the thread tip. The head features a 25mm hex width for secure engagement with standard tooling, facilitating high torque applications. This material choice makes it ideal for marine, chemical processing, food and beverage, and pharmaceutical industries where hygiene and longevity are paramount.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Ensure the mating tapped hole or nut is clean and free from debris. Verify thread compatibility. 2. Apply appropriate lubricant if specified for the application to achieve optimal torque and prevent galling, especially with stainless steel. 3. Insert the cap screw and tighten using a calibrated torque wrench to the specified torque value, ensuring even pressure application.
| 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) |
|---|---|---|
| M20 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M20 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Excellent |
| Marine / Saltwater | Excellent |
| Chemical / Acidic | Good |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using incorrect torque, leading to over-tightening (stripping threads) or under-tightening (loose joint). | Always use a calibrated torque wrench and adhere to recommended torque specifications for the screw size and material combination. |
| Improper thread engagement or cross-threading, which can damage both the screw and the mating component. | Start threading by hand for several turns to confirm alignment before using tools. If resistance is felt, back out and re-align. |
| Gallings of stainless steel threads during tightening, particularly in dry conditions. | Utilize an anti-seize compound or lubricant specifically designed for stainless steel fasteners to reduce friction and prevent galling. |
A: This Hex Head Cap Screw, 316 Stainless Steel is manufactured from 316 Stainless Steel.
A: Marine hardware and structural connections, Chemical processing equipment and piping, Food and beverage processing machinery.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||