This M4 x 51mm brass hex head cap screw offers superior corrosion resistance and a polished aesthetic. Engineered for demanding environments, it ensures reliable fastening in diverse applications.
| Standard | ISO 9001 |
| Material | Brass |
| Finish | Passivated |
| Grade | N/A |
| Size | M4 |
| Length | 51mm |
| Head Width | 27mm |
Precision-manufactured to tight tolerances, this M4 x 51mm brass hex head cap screw features a robust M4 thread and an overall length of 51mm. The large 27mm hexagonal head provides ample surface area for secure engagement with wrenches, ensuring consistent torque application. Constructed from high-grade brass, it exhibits excellent resistance to corrosion, tarnishing, and galvanic action, making it ideal for use in humid, saline, or chemically aggressive environments. Its non-magnetic properties are also advantageous in sensitive electrical applications.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select an appropriate wrench or socket that fits the 27mm hex head. 2. Carefully thread the screw into the pre-tapped hole or nut, ensuring it engages properly. 3. Tighten the screw to the required torque specification, avoiding over-tightening which could damage the brass material or the mating components.
| 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) |
|---|---|---|
| M4 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M4 | 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 during tightening, leading to thread stripping or material deformation. | Employ a torque wrench to adhere to specified torque values for the M4 thread size. Brass is a softer metal and requires controlled tightening. |
| Using incompatible fasteners in corrosive environments, leading to premature failure. | Ensure the brass material is suitable for the specific corrosive elements present in the application. For extremely harsh conditions, consider specialized alloys. |
A: This Hex Head Cap Screw, Brass is manufactured from Brass.
A: Marine hardware and fittings, Electrical connectors and enclosures, Decorative trim and architectural fixtures, Food 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. | ||||