Hunan Jia Shan Hardware Tech Co., Ltd.
| Payment Terms | L/C,D/A,D/P,T/T |
| Product name | Hexagon Socket Head Metal Screw |
| Finish | customized |
| Delivery Time | about 12-18days |
| Port | Shenzhen, Guangzhou |
| Package | Plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film. |
| Supply Ability | 10000,Piece/Pieces,Month |
| Corrosionresistance | High |
| Packaging Details | Plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film. |
| Corrosion Resistance | Yes |
| Thread Type | Standard/Customization |
| Service | OEM |
| Place of Origin | china |
| Certification | ISO 9001 |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T | Product name | Hexagon Socket Head Metal Screw |
| Finish | customized | Delivery Time | about 12-18days |
| Port | Shenzhen, Guangzhou | Package | Plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film. |
| Supply Ability | 10000,Piece/Pieces,Month | Corrosionresistance | High |
| Packaging Details | Plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film. | Corrosion Resistance | Yes |
| Thread Type | Standard/Customization | Service | OEM |
| Place of Origin | china | Certification | ISO 9001 |
| High Light | knurled hex socket cap screw ，black zinc plated metal screw ，galvanized carbon steel screw | ||
Knurled Hex Socket Head Cap Metal Screw With A Hole M8 M9 M10 Black Zinc Plated Galvanized Carbon Steel
This hex socket head cap screw combines knurling under the head and a transverse hole through the head. The knurling aids hand starting, while the hole allows safety wire or cotter pin insertion for positive mechanical locking against loosening. Material: carbon steel with black zinc plating (black passivated zinc). Strength class typically 8.8 or 10.9. Sizes M8, M9, M10 suit medium-duty industrial connections. The drilled hole design is essential in high-vibration environments such as engine peripherals, railway equipment, and mining machinery. Black zinc provides a uniform dark finish and moderate corrosion protection.
| Industry | Usage |
|---|---|
| Automotive | High-strength applications in engines, heavy-duty machinery, and bridge construction |
| Mechanical | Connecting mechanical parts, circuit boards, engines, transmissions in various industries |
| Energy | Connecting power generation equipment and transmission lines |
| Architectural | Building structures, shipbuilding, and petrochemical equipment |
Construction machinery engine mounts – safety wire through hole prevents loosening.
Mining vibrating screens – transverse hole with cotter pin.
Railway vehicle bogie access covers – double security against vibration.
Large fan rotor locking rings – wire-locked drilled screws.
Agricultural harvester blade holders – black zinc resists mud and wear.
Dual function: knurling + hole – hand starting convenience plus wire-locking anti-loosening.
Black zinc finish – dark, non-reflective appearance.
Medium diameters M8-M10 – common for moderate loads.
Positive mechanical locking – safety wire outperforms spring washers.
High-strength carbon steel – Grade 10.9 for high preload.
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2007
Total Annual:
15000000-20000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Hunan Jiashan Hardware Tech as a branch company of J AND R METALWORK,established in 2007 and located in Changsha, Hunan, China.After almost 17 years management development and technical improvement, Jiashan is willing to be a leading supplier in hardware industry. Meanwhile, we are one of member of ... Hunan Jiashan Hardware Tech as a branch company of J AND R METALWORK,established in 2007 and located in Changsha, Hunan, China.After almost 17 years management development and technical improvement, Jiashan is willing to be a leading supplier in hardware industry. Meanwhile, we are one of member of ...
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