Shenzhen Feitai Hardware Products Co., Ltd.
Shenzhen Feitai Hardware Products Co., Ltd.
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Iron Plated Black Zinc Round Head With Washer Triple Set Screw ,Pan Head Cross Slot Flat Spring Washer Combination Screw
Iron-plated black zinc round head with washer triple set screw,
Pan head cross slot flat spring washer combination screw bolt M4-M8
Standard
GB/T 9074.11-1988
material
Plain carbon steel
Surface treatment
Black zinc plating
Strength class
Class 4.8
Head shape
Round head
Product name: black zinc plated screw combination
Product specifications: Complete specifications
Product standard: National standard
Material: plain carbon steel
Surface treatment: black zinc plating
Packing instructions: Bag/box
Standard manufacturing process:
The standard manufacturing process is not easy to appear in the installation process,
which greatly saves the installation time.
Spiral thread: the surface is smooth and flat,
the thread is sharp and the tapping speed is fast,
it is not easy to lose teeth,
and it is not easy to be pulled into a jack.
Smooth and no burrs: smooth and smooth surface without burrs, quality workmanship,
durable, not easy to slip wire is not easy to slip.
Scope of use: construction engineering, mechanical equipment, rail transit, shipbuilding