This M21 x 92mm hex head cap screw, forged from premium 304 stainless steel, delivers superior tensile strength and corrosion resistance. Its robust design ensures secure fastening in critical applications.
| Standard | ASME B18 |
| Material | 304 Stainless Steel |
| Finish | Anodized |
| Grade | N/A |
| Size | M21 |
| Length | 92mm |
| Head Width | 17mm |
Engineered for reliability and performance, this M21 x 92mm hex head cap screw boasts a nominal diameter of M21, a precise length of 92mm, and a head width of 17mm. Constructed from 304 stainless steel, it offers excellent corrosion resistance, making it ideal for environments exposed to moisture, chemicals, or marine conditions. The 304 alloy provides a balance of strength and ductility, ensuring long-term integrity under significant load. Its hex head design facilitates high torque application with standard wrenches, crucial for securing heavy machinery, structural components, and critical assemblies where vibration resistance and durability 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 threads are clean and free from debris or damage. 2. Apply a suitable lubricant or anti-seize compound if required by the application. 3. Insert the screw and thread it by hand for at least two full turns to prevent cross-threading. 4. Tighten the screw using an appropriate torque wrench to the specified torque value for the mating component and the screw's grade.
| 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) |
|---|---|---|
| M21 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M21 | 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 head stripping. | Always use a wrench that properly fits the 17mm hex head to avoid damage and ensure accurate torque application. |
| Over-torquing the screw, causing thread damage or material fatigue. | Utilize a calibrated torque wrench and adhere to recommended torque specifications for the fastener and the assembly. |
| Cross-threading the screw during installation. | Start threading by hand for several turns to confirm proper alignment before using a tool. |
A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.
A: Heavy machinery assembly, Structural steel connections, Marine and offshore equipment, Chemical processing plants, Food and beverage processing equipment.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||