Hunan Jia Shan Hardware Tech Co., Ltd.
admin@jshardwaretech.com
86-0731 -82919092
Product Details
Place of Origin: china
Certification: ISO 9001
Payment & Shipping Terms
Minimum Order Quantity: 10pcs
Price: $0.01~2.56,Piece/Pieces
Packaging Details: Plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film.
Delivery Time: about 12-18days
Payment Terms: L/C,D/A,D/P,T/T
Supply Ability: 10000,Piece/Pieces,Month
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Product Name:
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Hexagon Socket Head Metal Screw
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Service:
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OEM
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Corrosion Resistance:
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Yes
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Port:
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Shenzhen, Guangzhou
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Corrosionresistance:
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High
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Thread Type:
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Standard/Customization
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Package:
|
Plastic Bag+Chipboard Carton+Plywood Pallet Pallet With Belt&Plastic Film.
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Finish:
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Customized
|
|
Product Name:
|
Hexagon Socket Head Metal Screw
|
|
Service:
|
OEM
|
|
Corrosion Resistance:
|
Yes
|
|
Port:
|
Shenzhen, Guangzhou
|
|
Corrosionresistance:
|
High
|
|
Thread Type:
|
Standard/Customization
|
|
Package:
|
Plastic Bag+Chipboard Carton+Plywood Pallet Pallet With Belt&Plastic Film.
|
|
Finish:
|
Customized
|
M18 M22 Hdg Hot Dig Galvanized Dacromet Geomet Hex Socket Head Machine Metal Screw Din912 Grade 4.8 8.8 10.9 12.9
These large-diameter hex socket head cap screws are available in M18 and M22, designed for heavy-duty and highly corrosive environments. Material: carbon or alloy steel with property classes 4.8, 8.8, 10.9, or 12.9. Surface finishes include three high-performance options: Hot Dip Galvanized (HDG), Dacromet, and Geomet. HDG provides a thick zinc layer (40-70μm) for outdoor steel structures; Dacromet and Geomet are chromium-free zinc-aluminium coatings offering excellent salt spray resistance (up to 1000 hours) with no hydrogen embrittlement risk. Head conforms to DIN912, allowing high torque via large hex keys.
| 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 |
Wind turbine tower flange connections – Grade 12.9 + Dacromet for cyclic loads.
Bridge seismic stoppers – HDG provides 30+ years rust protection.
Chemical reactor manways – Geomet coating resists acid mist.
Mining machinery chassis – M22 high-strength bolts.
Port crane rail clips – HDG resists seawater.
Large diameters, high load capacity – M18/M22 for heavy connections.
Multiple strength grades – from 4.8 to 12.9 for design flexibility.
Premium anti-corrosion coatings – HDG, Dacromet, Geomet for various aggressivity levels.
No hydrogen embrittlement – Dacromet/Geomet safe for high-strength bolts.
DIN912 standard – hex drive allows very high torque transmission.
