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Class 4.8 Metal Screw Cross Recessed Flat Carbon Steel Black Drywall Screw

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Class 4.8 Metal Screw Cross Recessed Flat Carbon Steel Black Drywall Screw

Place of Origin : China

MOQ : 10pcs

Price : 0.05USD-0.15USD

Supply Ability : 50000 pcs a week

Delivery Time : 15days

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

Brand Name : JIA SHAN

Name : Metal Screw

Standard : DIN,ASME,ASNI,ISO

Material : Steel,Stainless steel,Brass,Copper,Titanium Alloy,,Plastic

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

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Class 4.8 8.8 Cross Recessed Flat Black Drywall Screw Carbon Steel
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

Carbon Steel Class 4.8 8.8 Black Oxide Cross Recessed Flat Black Drywall Screw

Description

The performance grades of bolts used for steel structure connections range from 3.6 to 12.9, with grade 8.8 and above classified as high-strength bolts made from low-carbon alloy steel or medium carbon steel with heat treatment (quenching, tempering). Grade 4.8 bolts are typically made from 45 steel or Q235-A materials.

The performance grade label consists of two numbers representing the nominal tensile strength value and the yield ratio of the bolt material respectively.

Applications
Industry Use Case
Automotive High-strength applications including engines, heavy-duty machinery, and bridge construction
Mechanical Connecting mechanical parts, circuit boards, engines, transmissions, and building structures
Energy Connecting power generation equipment and transmission lines
Architectural Building structures, shipbuilding, and petrochemical equipment
Materials
Material Characteristics
Aluminum Excellent thermal/electrical conductivity but soft; requires proper processing
Titanium Requires EDM machining with deionized water medium
Steel Very strong; generates heat during processing
Brass High tensile strength but requires slow cutting speed
Feature Advantages

Performance grade 8.8 high-strength bolts achieve:

  • Nominal tensile strength of 640MPa grade
  • Yield-to-tensile ratio of 0.8
About Us
Class 4.8 Metal Screw Cross Recessed Flat Carbon Steel Black Drywall Screw Class 4.8 Metal Screw Cross Recessed Flat Carbon Steel Black Drywall Screw Class 4.8 Metal Screw Cross Recessed Flat Carbon Steel Black Drywall Screw Class 4.8 Metal Screw Cross Recessed Flat Carbon Steel Black Drywall Screw
Frequently Asked Questions
Q: Are you trading company or manufacturer?
A: We are factory and OEM are available.
Q: How long is your delivery time?
A: Generally 7-10 days if in stock, or 15-20 days if not in stock, depending on quantity.
Q: Do you provide samples? Is it free or extra?
A: Yes, we offer free samples but the customer pays for freight.
Q: What are your payment terms?
A: 30% T/T in advance, balance before shipment or L/C.

Product Tags:

Class 4.8 Metal Screw

      

Cross Recessed Metal Screw

      

Carbon Steel Black Drywall Screw

      
Class 4.8 Metal Screw Cross Recessed Flat Carbon Steel Black Drywall Screw Manufactures

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