This M21 x 35mm Brass Hex Head Cap Screw offers exceptional corrosion resistance and non-sparking properties. Ideal for environments where traditional steel fasteners would degrade or pose a safety hazard.
| Standard | DIN 933 |
| Material | Brass |
| Finish | Plain |
| Grade | N/A |
| Size | M21 |
| Length | 35mm |
| Head Width | 33mm |
Engineered for reliability and performance, this M21 x 35mm brass hex head cap screw features a nominal diameter of M21 and a length of 35mm, with a substantial 33mm head width for secure torque application. Crafted from solid brass, it provides excellent resistance to corrosion, particularly in marine, chemical, and humid environments. Its non-magnetic and non-sparking characteristics make it suitable for sensitive electrical applications and areas with flammable materials. The material's inherent ductility allows for secure fastening without compromising structural integrity.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Ensure the mating threads are clean and free of debris. 2. Hand-thread the cap screw to confirm proper engagement and alignment. 3. Use an appropriate wrench on the hex head to tighten to the specified torque, avoiding over-tightening to prevent thread stripping.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | DIN 933 |
| 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 stripped threads in the mating component or fastener. | Apply torque incrementally, utilizing a torque wrench to adhere to recommended specifications for brass fasteners. |
| Installing in environments requiring high tensile strength, where brass may not be suitable. | Verify that the material properties of brass meet the load-bearing requirements of the application; consider alloy steel or stainless steel for higher strength needs. |
A: This Hex Head Cap Screw, Brass is manufactured from Brass.
A: Marine hardware and fittings, Electrical connectors and enclosures, Architectural and decorative fixtures, Plumbing and gas applications, 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. | ||||