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Finish : Black, ZINC, Plain, Black Oxide, ZINC PLATED, BLUE DYED, Zinc-aluminum Coated, Silver Plated, Blue Anodized
Material : Stainless steel, Steel
Measurement system : Metric
Head Style : Pan, Truss, Flat, Oval, Round, HEX, Cheese
Place of Origin : Guangdong, China
Brand Name : JUHAO
Model Number : hex head self drilling screws
Standard : DIN,ISO,GB
Surface treatment : Plain.Black.yellow,blue,white,green,Zinc Plate. HDG
Package : Buyer's Requirement
Advantage : OEM Customized Service Provided
Quality control : 100% Inspection Berore Shipment
Certificate : ISO9001:2015 ISO14000 TS16949
MOQ : 500 pieces
Price : $0.10/pieces 500-9999 pieces













| item | value | 
| Finish | black, ZINC, Plain, Black Oxide, ZINC PLATED, BLUE DYED, Zinc-aluminum Coated, Silver Plated, Blue Anodized | 
| Material | Stainless steel, Steel | 
| Measurement system | INCH, Metric | 
| Head Style | HEX,TRUSS,FLAT,PAN,TORX | 
| Model Number | hex head self drilling screws | 
| Standard | DIN,ISO,GB | 
| Surface treatment | Plain.Black.yellow,blue,white,green,Zinc Plate. HDG | 
| Application | Building | 
| Package | Buyer's Requirement | 
| Advantage | OEM Customized Service Provided | 
| Quality control | 100% Inspection Berore Shipment | 









|                                                                                                                                                                   Question 1 | 1.Why is stainless steel magnetic? | 
| 304 stainless steel belongs to austenitic stainless steel, austenite in the cold working process in part or a small amount of transformation into martensite, martensite is magnetic, so 304 stainless steel is non-magnetic or slightly magnetic. | |
|                                                                                                                                                                                                                                         Question 2 | 2. How to identify authentic 304 stainless steel products? | 
| ①Support 304 stainless steel special test potion detection, if not discoloured for the authentic 304 stainless steel | |
| ② support chemical composition analysis, spectral analysis | |
| ③ support salt spray test, simulate the actual use of the environment | |
|                                                                                                                                                                                                                                                                                                                Question 3 | 3. What are the most commonly used stainless steel? | 
| ① 201 stainless steel, suitable for use in dry environments, easy to rust in water | |
| ② 304 stainless steel, outdoor or wet environment, corrosion resistance and acid resistance | |
| ③ 316 stainless steel, plus molybdenum, more corrosion resistance and pore erosion resistance, especially for seawater and chemical media | 


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