This M21 x 149mm Brass Hex Cap Screw offers superior corrosion resistance and non-sparking properties. Engineered for demanding applications where material integrity is paramount.
| Standard | ISO 9001 |
| Material | Brass |
| Finish | Zinc Plated |
| Grade | N/A |
| Size | M21 |
| Length | 149mm |
| Head Width | 30mm |
Designed for demanding industrial environments, this M21 x 149mm hex head cap screw is precision-manufactured from high-grade brass. Its inherent corrosion resistance makes it ideal for marine, chemical processing, and food-grade environments, preventing galvanic corrosion with dissimilar metals. The non-sparking characteristic is crucial in potentially explosive atmospheres. With a robust 30mm head width, it ensures a secure grip for high-torque applications and distributes load effectively across the mating surface, providing exceptional mechanical stability and longevity. This fastener meets stringent industrial standards for reliability.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Ensure mating threads are clean and free of debris. 2. Hand-thread the cap screw to verify proper engagement and alignment. 3. Utilize a calibrated torque wrench set to the specified torque value for the application, ensuring even tightening. 4. Visually inspect the secured joint for flush seating and no signs of material deformation.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ISO 9001 |
| Tensile Strength | Standard Commercial Spec |
| Yield Strength | Standard Commercial Spec |
| Hardness | Varies by specific batch |
| Copper (Cu) | 60.0 - 63.0% |
| Zinc (Zn) | Balance |
| Lead (Pb) | 2.5 - 3.7% |
| 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 | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Over-torquing the brass screw, leading to thread stripping or head deformation. | Always use a calibrated torque wrench and adhere to manufacturer-recommended torque specifications for brass fasteners. |
| Using brass screws in environments requiring high tensile strength or resistance to impact loads. | Evaluate application requirements for tensile strength and impact resistance. Consider steel or alloy fasteners if brass does not meet these criteria. |
A: This Hex Head Cap Screw, Brass is manufactured from Brass.
A: Marine hardware and equipment, Chemical processing plants, Food and beverage processing machinery, Electrical grounding systems, Corrosive atmosphere environments.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||