When you're designing bolted joints, always use a washer under the head of the bolt to prevent galling between the bolt head and the material you're bolting down.
Metric Socket Cap Screws are available from Zhuocheng in sizes M1. 4 to M30, and lengths of between 2mm and 300mm. Both partially threaded and fully threaded varieties are available.
Socket Head Cap Screws are made of a high grade alloy steel. These class 3A coarse type screws have a high tensile strength and a surface hardness of 38 - 43 Rc.
However, Zhuocheng fasteners are different as they offer the best of both worlds – corrosion resistance and ultra-high strength. Zhuocheng products such as socket head cap fasteners provide engineers with ground-breaking solutions for the most demanding fastener applications.
| Salt Spray test | 12H | |||
Finish | Nickel Plated | |||
Material | steel, carbon steel | |||
Measurement system | Metric | |||
Brand name | Zhuocheng | |||
Standard | DIN,ASTM/ANSI JIS EN ISO,AS,GB | |||
| Head type | Cap Head | |||
| Drive type | Hexagon Socket | |||
Size | M4-M64 | |||
Certificate | ISO9001-2008 | |||
Sample | Provided | |||
Customization | Provided | |||
Single packaging size | 25*25*16CM | |||
Singe gross weight | 25kg | |||
Package type | carton+plastic bags | |||
(1)Small box packging | ||||
(2)25-30kgs/ctn in bulk, 36-48cartons/pallet | ||||
(3)Assortment in poly bag or plastic box | ||||
Delivery time | Quantity | Delivery time | ||
1-1000pcs | 3 days | |||
1001-5000pcs | 7 days | |||
5001-10000pcs | 9 days | |||
>10000pcs | To be negotiated | |||




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They are all manufactured according to the strictest international standards. Our products have received favor from both domestic and foreign markets.
They are now widely exporting to 200 countries.
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