Hexagonal head screws
Standard：GB5782、GB5783、DIN931、DIN933、ISO4014、ISO4017，GB31.1，GB32.1, Flange head screws and etc
Material：alloy steel ，stainless steel，carbon steel
Coating ：Zinc plated，Dacromet, Gemoet，Zinc nickel and etc
- Features
Products
- GEMLOCK series locking nuts
- GNSAT series inserts
- RIVF series blind rivet nuts
- Standard fasteners
- Riveting bond
- locking washers
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