This M17x78mm hex head cap screw is crafted from premium brass, offering exceptional corrosion resistance and moderate strength. Ideal for applications requiring a non-sparking, aesthetically pleasing, and durable fastening solution.
| Standard | DIN 933 |
| Material | Brass |
| Finish | Plain |
| Grade | N/A |
| Size | M17 |
| Length | 78mm |
| Head Width | 19mm |
Precision-manufactured to tight tolerances, this M17x78mm brass hex head cap screw features a nominal diameter of M17 and a length of 78mm. The hex head has a width of 19mm, facilitating secure tightening with standard tooling. Brass, a copper-zinc alloy, provides excellent inherent corrosion resistance, particularly in marine or chemically aggressive environments, and possesses good electrical conductivity and non-magnetic properties. Its moderate tensile strength makes it suitable for applications where extreme load-bearing capacity is not the primary requirement, such as in plumbing, electrical fixtures, and ornamental installations.
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 from debris. 2. Engage the cap screw by hand to prevent cross-threading. 3. Tighten the screw to the required torque using an appropriate wrench or socket, ensuring consistent pressure.
| 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) |
|---|---|---|
| M17 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M17 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Moderate |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Over-tightening, which can strip brass threads or deform the material. | Use a torque wrench and adhere to recommended torque values for brass fasteners, or tighten until snug and then apply an additional quarter turn. |
| Using steel tools on brass, which can cause galling or damage the fastener head. | Utilize tools made of softer materials like brass, aluminum, or nylon, or ensure adequate lubrication if steel tools are unavoidable. |
A: This Hex Head Cap Screw, Brass is manufactured from Brass.
A: Marine hardware and fittings, Electrical connectors and enclosures, Plumbing and water systems, Architectural and ornamental fixtures.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||