Why does stainless steel have magnetism?
304 stainless steel belongs to austenitic stainless steel. Part or a small amount of austenite is transformed into martensite during cold working,The martensite is magnetic, so 304 stainless steel is non-magnetic or micro magnetic. Baidu can specifically query why 304 stainless steel is magnetic.

SS304 Stainless Steel DIN933 Hex Bolts , External hexagon bolt stainless steel full thread external hexagon screw

1. Product Description

Hexagonal bolt combined with head and the screw fastener, consisting of bolts Material iron bolts and stainless steel bolts, which can divided into full thread hex bolt and half thread hex bolt. Reasonably, these kinds of fasteners might be known as bolts, but according to the US government document DistinguishingBolts from Screws products' standard. The grade of the iron bolts are 3.6,4.6,4.8,5.6,6.8,8.8,9.8,10.9,12.9 etc, bolts Gr8.8 or above which is made of low carbon steel or carbon steel with heat treatment (quenching and tempering), normally named as high strength bolts, the rest is known as ordinary bolts. The stainless steel are SUS201 SUS304 SUS316 etc. Used with the nut for fastening two parts with hole.

Hex Head Bolts are designed for assembly into a hole. Hex Head Bolts according to SAE specifications with a designed washer face under the head and a chamfered point. Grade 9.8 has a greater tensile strength than Grade 8.8.Standard provides specifications for the thread M3 ~ M64, A and B grade hex head bolts .A level for D <= 24 and L <= 10D or L <= 150mm (according to a small value) bolts; for Class B D> 24, or L> 10D or L> 150 (by a smaller value) of the bolt
Hex bolts Dimensions (pictured)

Tags: thread size D = M12, nominal length L = 80mm, the performance rating of 8.8, the table with the oxide, marking Example A grade hex head bolts

Bolt GB / T5782-86-M12 × 80

2. Specification

3. Features

1) Surface treatment:After casting, we can do machining, polishing, oiled (rust-proof), zinc, nickel, chrome plating, hot galvanized, painted.

2) Material & mechanical properties & heat treatment: according to your requirements.

All the materials are according to GB, JIS, ISO, ANSI, ASTM, BS, DIN, which can meet the ISO9001-2008 quality control and inspection

Designed for using in high-stress and high-strength applications. General Fastening applications where need high strength and superior corrosion resistance.

4. Advantages

Common chioce for fastening, which provide high tensile, offering high holding power and corrosion resistance and don't need any coating. Durability testing and critical technical design to enhance fasteners lifetime. Competitive prices with professional factory supply. Perfect fastening solution with 10 years experiences to solve your problem: Wide range of parts selection.