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  • Fine thread m3*6 m6 din912 zinc plated internal hex hexagonal socket head hd cap screw m12x1.5 allen type screws 5mm
Fine thread m3*6 m6 din912 zinc plated internal hex hexagonal socket head hd cap screw m12x1.5 allen type screws 5mm
Fine thread m3*6 m6 din912 zinc plated internal hex hexagonal socket head hd cap screw m12x1.5 allen type screws 5mm
Fine thread m3*6 m6 din912 zinc plated internal hex hexagonal socket head hd cap screw m12x1.5 allen type screws 5mm
Fine thread m3*6 m6 din912 zinc plated internal hex hexagonal socket head hd cap screw m12x1.5 allen type screws 5mm
Fine thread m3*6 m6 din912 zinc plated internal hex hexagonal socket head hd cap screw m12x1.5 allen type screws 5mm
Fine thread m3*6 m6 din912 zinc plated internal hex hexagonal socket head hd cap screw m12x1.5 allen type screws 5mm
Fine thread m3*6 m6 din912 zinc plated internal hex hexagonal socket head hd cap screw m12x1.5 allen type screws 5mm

Fine thread m3*6 m6 din912 zinc plated internal hex hexagonal socket head hd cap screw m12x1.5 allen type screws 5mm

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Selection Of Measurement Tools For Screws, Bolts, Nuts And Washers
It is recommended to use vernier calipers for measurement, which can be accurate to 0.01mm. Measurement with tape measure and straightedge, the error range is 1-2mm, the measurement result is easy to be wrong


                                                                                                                                                                  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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