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Product Introduction
A black oxide hex bolt is a type of bolt with a hexagonal head and a threaded shaft, that has been treated with a black oxide coating. This coating, often called "blackening", is a chemical conversion coating applied to ferrous metals to enhance both their appearance and their resistance to corrosion. The black oxide finish is typically used in conjunction with oil or wax to further improve its protective properties.
Corrosion Resistance:
Black oxide provides a degree of corrosion protection, especially when combined with oil or wax, making it suitable for applications where moisture or chemicals aren't highly corrosive.
Improved Aesthetics:
The black finish offers a sleek, non-reflective appearance, which is often preferred in visible applications or when a decorative element is desired.
Reduced Light Reflection:
The matte black finish minimizes light reflection, which can be beneficial in certain lighting conditions.
Enhanced Lubricity:
Black oxide coatings can improve the lubricity of the fastener, potentially reducing friction and making installation easier.
Cost-Effectiveness:
Compared to other corrosion-resistant finishes like stainless steel, black oxide is generally more affordable.
Dimensional Stability:
Black oxide coatings are thin and don't significantly alter the dimensions of the bolt, making them suitable for applications where tight tolerances are important.
Technical Parameters
| Material | Carbon steel/Stainless steel |
| Material Grade | 4.8/8.8/10.9/12.9 |
| Size | M6-M24 |
| Length | 10mm-160mm |
| Payment Terms | L/C,T/T |
| Packaging | Plastic woven bag, carton or according to customer requirements |
| Shipping | Container shipping |
| Port of Loading | Ningbo/Tianjin |
1. Equipment that needs to be exposed to a humid environment for a long time.
2. Occasions with high requirements on the load that bolts can withstand.
3. Occasions that need to be used in equipment manufacturing, maintenance, etc.
4. Occasions where assembly errors need to be avoided, such as airplanes, cars, etc.
Product Operate Guide
When installing hexagonal bolts, you need to select the appropriate bolt length and diameter based on factors such as the thickness of the connected parts, the hole diameter, and the required tightening force, and use appropriate tools such as wrenches or torque wrenches to tighten.
During the installation process, you need to pay attention to the preload and tightening sequence of the bolts to avoid problems such as loosening or damage.
Product Video
FAQ
Q: Why are bolts hexagonal?
A: Bolts are hexagonal primarily for practicality and efficiency. The hexagon shape offers an ideal balance between ease of manufacturing and providing a large surface area for wrenches or sockets. This shape allows for better torque transfer, reducing slippage and wear during tightening or loosening.
Q: What are the advantages of hex bolts?
A: Hex bolts, including hexagon bolt and nut pairs, are the go-to fastener that offers high strength, ease of installation, and versatility in various applications. Their key advantage is high torque transfer and the ability to be installed with a wrench perpendicular to the threaded shaft.
Q: What tool do you need for a hex bolt?
A: Typically, a wrench or a socket set is used for hex bolts, with the size depending on the hex bolt head dimensions which range from 4mm to 55mm in our selection.
Q: How do I know my hex bolt size?
A: To determine the size of your hex bolt, measure the diameter and length of the threaded shaft. Then measure the diameter and height of the head. For specific types like an M6 hex bolt, the size of the thread is indicated by the M-number. Although the length and head size can differ.
Bespoke Hex Bolts Manufacture.
High precision, bespoke manufacture of Hex Bolts to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.
