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Grade Class 12.9 Black Oxide Cadmium Plated Cross Recessed Round Head Wood Tapping Screw

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

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Product Details

Product Description

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                                                                                                                                                                                                                                                                                                                                                            black oxide wood tapping screw, cadmium plated metal screw, class 12.9 round head screw
                      

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

Grade Class 12.9 Black Oxide Cadmium Plated Cross Recessed Round Head Wood Tapping Screw

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

The Grade 12.9 Black Oxide Cadmium Plated Wood Tapping Screw features a drilling tail design for superior performance. With exceptional hardness and durability, these screws provide secure fastening without requiring pre-drilling, significantly improving work efficiency.

Key Applications

Industry	Application
Automotive	High-strength applications in engines and heavy-duty machinery
Mechanical	Connecting mechanical parts, circuit boards, and building structures
Energy	Power generation equipment and transmission line fixtures
Construction	Building structures, shipbuilding, and petrochemical equipment

Material Specifications

Material	Characteristics
Aluminum	Excellent thermal/electrical conductivity, requires careful processing
Titanium	Requires EDM machining with deionized water medium
Steel	High strength, generates heat during processing
Brass	High tensile strength, requires slow cutting speed

Technical Advantages

Grade 12.9 requires specialized smelting processes:

8.8 grade: Medium carbon steel (45 steel or 40Cr) with heat treatment
10.9 grade: Alloy structural steel (40Cr or 42CrMo) with quenching/tempering
12.9 grade: High-grade alloy steel (34CrMo4 or 42CrMo) with strict heat treatment

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