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Q:In the fastener industry, 1018 refers to what material: Low carbon steel, can only be used to produce the general screw class, and 102A almost

Q:Fasteners often say that the nature of galvanized oxidation is what it means: Fasteners, is a fastening connection with the application of a very wide range of mechanical parts. Fasting, widely used in industries such as energy, electronics, electrical appliances, machinery, chemical, metallurgy, mold, hydraulic, etc., in various machinery, equipment, vehicles, ships, railways, bridges, construction, structure, tools , Chemical, instrumentation and supplies, etc., can see a wide range of fasteners, is the most widely used mechanical base pieces. It is characterized by a wide variety of specifications, performance purposes vary, and standardization, serialization, the degree of generalization is also very high. Therefore, some people have a national standard of a class of fasteners called standard fasteners, or simply referred to as standard parts.

Q:For the commonly used standard parts, for some of the quality of good or bad, how to distinguish,: If it is important, random to do one or two destructive pull test, their own press with a simple tooling, pay attention to safety, if their own, to the physical and chemical test units or heat treatment of the brothers can do. You can also go to the supplier to monitor the sampling of such a similar test (contract agreed).

Q:A194 GR3 is what style fasteners: GR3 is GRADE 3 abbreviation, A194 GR3 is carbon steel red or cold beat nut, the minimum tempering temperature of 565 degrees. High pressure and high temperature conditions with the bolt alloy steel nut.

Q:Who include who btween them?: Fasteners are said from the point of view of the action, which contains both standard parts (GB ANSI ASME DIN EU JIS, etc.) and non-standard parts (according to the drawings) is not entirely a concept

Q:Bolts and other connection fasteners some points A B C grade what it means: Grade is not the same, the tolerance range is not the same, A-level tolerance of the smallest, C-class tolerance of the largest

Q:Are there categories of fasteners classified by material?: Low carbon steel Q235, low carbon alloy steel Q345, 10B21 medium carbon steel 35K 45K, high carbon alloy steel 40CR 435crmo, stainless steel 303 304 316. Stainless steel 201. etc., the number of materials, but generally determine the amount of carbon fasteners, etc. To what level. Of course, like 10B21 this low-carbon alloy steel can reach 8.8 level

Q:Will the stainless steel fastening standard parts of the national standard code and name?: Because the fastener is a standard part, so the size of stainless steel fasteners and ordinary fastener size is the same, other standard GB / T 5267.4-2009 fastener surface treatment corrosion-resistant stainless steel passivation treatment

Q:The main meaning is that the design to make some specific requirements to achieve consistency.: Easy to install, disassemble; to ensure long-term solid does not fail (life); do not exceed the standard selection, cost savings;

Q:What is the fastener and others?: Fasteners are collectively referred to as a class of mechanical parts used to fasten two or more parts (or components) into a unit. Fasteners include bolts, studs, screws, nuts, washers, Pin, etc.,

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