Engineered for robust connections, this M8 x 81mm hex head cap screw is crafted from premium 304 stainless steel. Delivering exceptional tensile strength and superior corrosion resistance, it ensures reliable performance in challenging conditions.
| Standard | ASME B18 |
| Material | 304 Stainless Steel |
| Finish | Galvanized |
| Grade | N/A |
| Size | M8 |
| Length | 81mm |
| Head Width | 11mm |
Purpose-built for heavy-duty applications, this M8 x 81mm hex head cap screw features a precisely machined 11mm head width, facilitating secure torque application with standard tooling. Constructed from 304 stainless steel, it offers excellent resistance to rust, corrosion, and chemical degradation, making it ideal for outdoor environments, marine applications, and food processing equipment. The material's inherent toughness and ductility ensure consistent performance under significant mechanical stress, preventing premature failure. This screw meets stringent industry standards for load-bearing capacity and dimensional accuracy, guaranteeing interchangeability and dependable assembly in critical infrastructure and machinery.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate tool (e.g., socket wrench, spanner) with a size matching the 11mm hex head. 2. Ensure mating threads are clean and free from debris. 3. Thread the screw into the designated fastener hole by hand initially to prevent cross-threading, then tighten to the required torque specification using the selected tool.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ASME B18 |
| 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) | 18.0 - 20.0% |
| Nickel (Ni) | 8.0 - 10.5% |
| Manganese (Mn) | 2.00% max |
| Bolt Size | Dry Torque (ft-lbs) | Lubricated Torque (ft-lbs) |
|---|---|---|
| M8 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M8 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Excellent |
| Marine / Saltwater | Good |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using the wrong size wrench, leading to stripped head. | Always use a wrench or socket that precisely fits the 11mm hex head to ensure proper engagement and prevent damage. |
| Over-tightening, causing thread damage or material fatigue. | Refer to torque charts for M8 stainless steel fasteners and use a torque wrench to achieve the specified tightness without excessive force. |
| Cross-threading the screw during initial engagement. | Start threading the screw by hand for several turns to confirm it is engaging the mating threads correctly before applying tool torque. |
A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.
A: Structural steel connections, Marine hardware and equipment, Outdoor machinery and enclosures, Chemical processing plants, Food and beverage manufacturing.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||