This M20 x 134mm Brass Hex Head Cap Screw offers superior corrosion resistance and excellent electrical conductivity. Engineered for demanding applications where strength and aesthetic appeal are paramount.
| Standard | ASME B18 |
| Material | Brass |
| Finish | Passivated |
| Grade | N/A |
| Size | M20 |
| Length | 134mm |
| Head Width | 34mm |
Specified by design engineers worldwide, this M20 x 134mm Hex Head Cap Screw is manufactured from high-grade brass (typically UNS C26000 or C36000 alloy) for its inherent corrosion resistance, non-magnetic properties, and excellent machinability. The M20 nominal diameter, 134mm length, and 34mm head width conform to industry standards, ensuring compatibility with standard tools and mating components. Brass offers moderate tensile strength suitable for many structural and electrical applications, and its antimicrobial properties are advantageous in specific environments.
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 component with a tapped hole or nut for an M20 thread. 2. Insert the cap screw, ensuring threads engage smoothly. 3. Tighten the cap screw using a standard 34mm hex wrench or socket to the specified torque, avoiding overtightening. 4. Verify secure fastening and proper alignment.
| 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) |
|---|---|---|
| M20 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M20 | 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 a steel fastener in a corrosive environment, leading to premature failure. | Always specify brass or other corrosion-resistant materials for environments prone to oxidation or chemical attack. |
| Overtightening brass fasteners, which can lead to galling or thread damage. | Adhere to recommended torque specifications for brass fasteners, which are generally lower than for steel. |
A: This Hex Head Cap Screw, Brass is manufactured from Brass.
A: Marine hardware and fittings, Electrical connectors and grounding, Architectural and decorative fixtures, Corrosive chemical 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. | ||||