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DIN912 Guaranteed 8.8 12.9 Black Zinc Plated Half Thread Hex Socket Head Cup Screw Bolt

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DIN912 Guaranteed 8.8 12.9 Black Zinc Plated Half Thread Hex Socket Head Cup Screw Bolt

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Brand Name :	JUHAO
Model Number :	allen cap screw bolt
Price :	$0.13/pieces 1000-9999 pieces

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DIN912 Guaranteed 8.8 12.9 Black Zinc Plated Half Thread Hex Socket Head Cup Screw Bolt

Specification

item	value
Finish	Black Oxide, ZINC PLATED
Material	stainless steel, Steel
Measurement system	INCH
Head Style	Pan, Flat, Oval, HEX
Place of Origin	China
Brand Name	OEM&ODM
Standard	DIN
Material:	Steel/SUS304

Products Description

DIN912 Guaranteed 8.8 12.9 Black Zinc Plated Half Thread Hex Socket Head Cup Screw Bolt

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COMPANY PROFILE

Shenzhen Juhao Hardware Technology Co.Ltd, established in 2018 and located in Shenzhen, China. SHENZHEN Juhao Hardware Technology Co.Ltd is a professional manufacturer of standard and non-standard fasteners more than a decade. Our company mainly produces and sells fasteners of GB,DIN,ISO and JIS series,and provides all kinds of stainless steel materials wih lower price.We have more than 15 years experience in fastener manufacture.

Our company has over 100 production equipment and 20 testing equipment. Therefore, we can provide customers with customized services such as OEM/ODM very well.We have a professional research and develop ment team to meet the diversified and personalized requirements of our customers. Our goal is to provide customers with thoughtful service, strict quality control, competitive price and aim to commit one-stop service.

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?
Question 1		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

DIN912 Guaranteed 8.8 12.9 Black Zinc Plated Half Thread Hex Socket Head Cup Screw Bolt

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