


This 40mm (4cm) black screw is a high-grade industrial fastener manufactured with premium steel and black oxide finish for corrosion resistance and durable performance. It is designed for wide use in machinery assembly, equipment maintenance, and general industrial fastening applications, providing reliable clamping force and long service life even in harsh working environments.
| Parameter | Value |
|---|---|
| Product Type | Industrial Machine Screw |
| Length | 40mm (4cm) |
| Surface Finish | Black Oxide |
| Material | High Strength Carbon Steel |
| Color | Black |
| Application | Machinery Assembly, Equipment Maintenance |
This 40mm black screw is widely used across multiple industrial sectors, including general machinery manufacturing, industrial equipment maintenance, automation equipment assembly, metal structure fabrication, and HVAC system installation. It is an ideal choice for OEM production lines, MRO (Maintenance, Repair and Operations) inventory, and custom engineering projects that require dependable fastening solutions.
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