This M9 x 91mm hex head cap screw, forged from high-grade 316 stainless steel, offers superior corrosion resistance and exceptional tensile strength for critical fastening needs.
| Standard | ISO 9001 |
| Material | 316 Stainless Steel |
| Finish | Anodized |
| Grade | N/A |
| Size | M9 |
| Length | 91mm |
| Head Width | 17mm |
Purpose-built for heavy-duty applications, this M9 x 91mm hex head cap screw features a robust M9 thread size and a substantial 91mm length, ensuring deep and secure engagement in demanding structural assemblies. The 17mm hex head width provides ample surface area for high torque application with standard tooling. Constructed from premium 316 stainless steel, it exhibits excellent resistance to pitting, crevice corrosion, and general corrosion, making it ideal for marine, chemical processing, and outdoor environments where exposure to aggressive media or saltwater is a concern. Its inherent strength and durability guarantee reliable performance under significant load and stress, crucial for maintaining structural integrity.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate torque wrench and socket size (17mm). 2. Clean both the screw threads and the mating tapped hole or nut to remove any debris or contaminants. 3. Insert the screw and engage the threads by hand for at least two full turns to prevent cross-threading. 4. Apply torque according to the designed assembly specifications, ensuring proper preload is achieved without over-tightening.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ISO 9001 |
| 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) |
|---|---|---|
| M9 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M9 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Excellent |
| Marine / Saltwater | Excellent |
| Chemical / Acidic | Good |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Cross-threading the screw during initial engagement. | Always start threading by hand for at least two full turns to ensure proper alignment before applying any torque. |
| Using excessive force leading to thread stripping or over-stressing the fastener. | Adhere to specified torque values for the application. Consult engineering drawings or torque charts for accurate settings. |
| Improper cleaning of mating surfaces, leading to reduced clamping force. | Ensure both the screw threads and the receiving threads (or nut) are free from dirt, grease, or debris before assembly. |
A: This Hex Head Cap Screw, 316 Stainless Steel is manufactured from 316 Stainless Steel.
A: Marine hardware and deck fittings, Chemical processing equipment, Outdoor structural assemblies, Food 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. | ||||