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Finish : Black, ZINC, Black Oxide, ZINC PLATED
Material : Stainless steel, Steel, Steel/SUS304
Measurement system : Metric
Head Style : Hexagon socke
Place of Origin : Guangdong, China
Brand Name : JUHAO
Model Number : Hexagon socket head screws
Standard : DIN,ISO,GB
Certificate : ISO9001:2015
Delivery time : 7-25 Days
Package : PE Bag+Carton+Pallet
Advantage : OEM Customized Service Provided
Quality control : 100% Inspection Berore Shipment
MOQ : 1000 pieces
Price : $0.10/pieces 1000-19999 pieces
Certificate  | ISO9001:2015  | 
Color  | Customized Colors  | 
Delivery time  | 7-25 Days  | 
Package  | PE Bag+Carton+Pallet  | 
QUALITY control  | 100% Inspection Berore Shipment  | 
Advantage  | OEM ODM Customized Service Provided  | 
Material  | Carbon steel/Stainless steel/Brass  | 
Screws type  | Allen Bolts  | 






















                                                                                                                                                                  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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                        DIN912 Zinc Hexagon Hex Socket Head Screws in Metric Measurement System for Control Images |