This M20x81mm brass hex head cap screw offers excellent corrosion resistance and non-magnetic properties. Engineered for reliable fastening in challenging industrial settings, ensuring long-term performance and safety.
| Standard | ASTM A106 |
| Material | Brass |
| Finish | Plain |
| Grade | N/A |
| Size | M20 |
| Length | 81mm |
| Head Width | 10mm |
Designed for demanding industrial environments, this M20x81mm hex head cap screw is precision-manufactured from high-grade brass, renowned for its superior corrosion resistance against a wide range of chemicals and moisture. The hex head design facilitates secure tightening with standard tooling, while the M20 thread size and 81mm length provide robust joining capabilities. Its non-magnetic and non-sparking characteristics make it an ideal choice for applications in volatile or sensitive environments, such as marine hardware, electrical assemblies, and chemical processing equipment where material integrity and safety are paramount.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate wrench or socket for the M20 hex head. 2. Align the screw with the pre-drilled or tapped hole, ensuring threads engage smoothly. 3. Apply consistent torque to achieve a secure fastening without over-tightening, which could damage the threads or the workpiece.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ASTM A106 |
| 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 excessive force during tightening. | Apply torque gradually and evenly. Refer to material specifications for recommended torque values if available. |
| Cross-threading the screw into the mating component. | Ensure the screw is started straight and threads engage easily by hand before applying any torque. |
A: This Hex Head Cap Screw, Brass is manufactured from Brass.
A: Marine hardware and fittings, Electrical panel enclosures, Chemical processing equipment, 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. | ||||