This M21x94mm brass hex head cap screw offers superior corrosion resistance and excellent conductivity. Its robust construction ensures reliable fastening in demanding environments, making it a preferred choice for specialized applications.
| Standard | ASME B18 |
| Material | Brass |
| Finish | Passivated |
| Grade | N/A |
| Size | M21 |
| Length | 94mm |
| Head Width | 18mm |
Manufactured under strict quality controls, this M21x94mm brass hex head cap screw features a nominal diameter of M21 and a length of 94mm. The head width measures 18mm, providing ample torque application with standard tooling. Composed of high-grade brass alloy, it exhibits exceptional resistance to corrosion, tarnishing, and galvanic action, particularly in marine and humid environments. Its inherent non-magnetic properties are advantageous in sensitive electronic assemblies. The material's excellent thermal and electrical conductivity also makes it suitable for electrical grounding and connection applications.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select appropriate torque wrench and socket size (18mm). 2. Ensure mating threads are clean and free of debris. 3. Engage the cap screw and tighten to the specified torque, avoiding over-tightening. 4. Verify proper seating and thread engagement for secure fastening.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ASME B18 |
| 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 | Moderate |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using excessive force leading to thread stripping or fastener fracture. | Always adhere to recommended torque specifications for brass fasteners and utilize a calibrated torque wrench. |
| Incorrect tool size for the hex head, causing cam-out and damage to the fastener. | Ensure the socket wrench precisely fits the 18mm hex head to achieve optimal grip and prevent damage. |
A: This Hex Head Cap Screw, Brass is manufactured from Brass.
A: Marine hardware and fittings, Electrical grounding and connections, Decorative architectural elements, Musical instrument manufacturing, Specialized chemical 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. | ||||