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Class 4.8 8.8 10.9 12.9 Blue Zinc PlatedCross Recessed Countersunk Head Drilling Screws

Product Details

Place of Origin: China

Brand Name: JIA SHAN

Payment & Shipping Terms

Minimum Order Quantity: 10pcs

Price: 0.05USD-0.15USD

Packaging Details: Plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film.

Delivery Time: 15days

Supply Ability: 50000 pcs a week

Get Best Price

Product Details

Product Description

Highlight:

Name:	Metal Screw	Standard:	DIN,ASME,ASNI,ISO
Material:	Steel,Stainless Steel,Brass,Copper,Titanium Alloy,,Plastic	Place Of Origin:	China
Finish:	Polish,Passication,black ,galvanization,Chromate,Dacromet	Certificate:	ISO9001:2008,ROHS
Used:	Building Industry Machinery	Thread Type:	Coarse, Fine
Usage:	Fastening	Function:	Connection,Fastening And Decoration
Strength:	High	Size:	Various Sizes Available
Measurement System:	INCH,metric System

Name:	Metal Screw
Standard:	DIN,ASME,ASNI,ISO
Material:	Steel,Stainless Steel,Brass,Copper,Titanium Alloy,,Plastic
Place Of Origin:	China
Finish:	Polish,Passication,black ,galvanization,Chromate,Dacromet
Certificate:	ISO9001:2008,ROHS
Used:	Building Industry Machinery
Thread Type:	Coarse, Fine
Usage:	Fastening
Function:	Connection,Fastening And Decoration
Strength:	High
Size:	Various Sizes Available
Measurement System:	INCH,metric System

Class 4.8 8.8 10.9 12.9 Blue Zinc PlatedCross Recessed Countersunk Head Drilling Screws

Class 4.8 8.8 10.9 12.9 Blue Zinc Plated Cross Recessed Countersunk Head Drilling Screws

Product Specifications

Attribute	Value
Name	Metal Screw
Standard	DIN, ASME, ANSI, ISO
Material	Steel, Stainless steel, Brass, Copper, Titanium Alloy, Plastic
Place of Origin	China
Finish	Polish, Passivation, Black, Galvanization, Chromate, Dacromet
Certificate	ISO9001:2008, ROHS
Used	Building Industry Machinery
Thread Type	Coarse, Fine
Usage	Fastening
Function	Connection, Fastening and Decoration
Strength	High
Size	Various sizes available
Measurement System	INCH, Metric system

Product Description

These drilling screws feature a countersunk head with cross recess and blue zinc plating. The drilling tail design eliminates the need for pre-drilling, providing superior hardness and connection strength compared to standard screws. Their self-drilling capability significantly improves work efficiency across various applications.

Key Features

High-strength steel construction with multiple class options (4.8, 8.8, 10.9, 12.9)
Blue zinc plating for enhanced corrosion resistance
Countersunk head design for flush mounting
Cross recess drive for secure fastening
Self-drilling capability eliminates need for pre-drilling
Superior hardness and connection strength
Available in various materials including stainless steel, brass, and titanium alloy

Applications

Industry	Usage
Automotive	High-strength applications in engines, transmissions, and heavy-duty components
Mechanical	Connection of mechanical parts, circuit boards, and structural components
Energy	Power generation equipment and transmission line fixtures
Construction	Building structures, shipbuilding, and petrochemical equipment
General Industry	Electronics, machinery, electrical equipment, and various industrial products

Material Specifications

Material	Characteristics
Aluminum	Excellent thermal/electrical conductivity; requires proper processing techniques
Titanium	High strength-to-weight ratio; requires specialized machining
Steel	Exceptional strength; generates heat during machining
Brass	High tensile strength; easy to machine with proper cutting speed

Corrosion Resistance

Our stainless steel screws feature advanced corrosion prevention through surface treatments including:

Blue zinc plating for enhanced protection
Passivation treatments for stainless steel variants
Special coatings like Dacromet for extreme environments

The 316 and 316L variants contain 2-3% molybdenum for superior chloride resistance, making them ideal for marine and chemical applications.

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