This M18 x 69mm hex head cap screw, crafted from premium 304 stainless steel, provides robust and corrosion-resistant fastening for critical industrial assemblies, ensuring long-term structural integrity.
| Standard | ASME B18 |
| Material | 304 Stainless Steel |
| Finish | Black Oxide |
| Grade | N/A |
| Size | M18 |
| Length | 69mm |
| Head Width | 34mm |
Engineered for reliability and performance, this M18 x 69mm hex head cap screw features a nominal diameter of 18mm and a thread pitch suitable for robust engagement. The 304 stainless steel composition offers excellent resistance to a wide range of corrosive environments, including atmospheric, food, and industrial chemicals, due to its chromium and nickel content. The substantial head width of 34mm ensures optimal torque transfer and load distribution, making it ideal for high-stress applications where vibration and environmental exposure are significant concerns. Its precise manufacturing tolerances guarantee consistent fit and function.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate mating thread or tapped hole with the correct thread pitch (M18). 2. Apply a suitable lubricant or anti-seize compound to the threads if the application environment warrants it. 3. Insert the cap screw and engage the threads by hand to prevent cross-threading. 4. Use a calibrated torque wrench to tighten the cap screw to the specified torque value for the application, ensuring the 34mm hex head is securely engaged by the wrench.
| 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) |
|---|---|---|
| M18 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M18 | 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 or thread pitch wrench, leading to stripped heads or improper seating. | Always use a wrench that precisely fits the 34mm hex head and is appropriate for M18 threads. |
| Over-torquing the screw, which can lead to thread damage or fastener failure. | Refer to engineering specifications or torque charts for the correct tightening torque for M18 screws in the specific material being joined. |
| Not cleaning the threads of both the screw and the mating hole, potentially causing galling or reduced clamping force. | Ensure both the screw threads and the mating hole are clean and free of debris or old threadlocker before installation. |
A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.
A: Structural steel connections, Marine and offshore equipment, Food processing machinery, Chemical processing equipment, Automotive components.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||