Shanghai Genrui Industry Co., Ltd.: Shanghai, China; Main products: Stud Bolt, A193 B7 Bolt, Hex Bolt, Nut, Washer

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m24 stud bolt, Zinc Nickel Bichromate Coating

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Product Details

Place of Origin	Shanghai, China		Brand Name	Genrui
Model Number	ASTM A 193 B7		Standard	ANSI

The ASTM standard covers alloy steel and stainless steel bolting materials for high temperature

or high pressure service. This specification includes fasteners intended for use in pressure vessels,

valves, flanges, and fittings. Although, this material is often available in inational coarse (UNC) thread pitches,

if being used in traditional applications, threads are specified 8 threads per inch (tpi) for diameters

above one inch.

Below is a basic summary of a few of the common grades. ASTM A193 covers a number of other

standard specifications not covered in this description including B5, B6, and B16.

B7	Alloy steel, AISI 4140/4142, quenched and tempered
B8	Class 1 Stainless steel, AISI 304, carbide solution treated.
B8M	Class 1 Stainless steel, AISI 316, carbide solution treated.
B8	Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened
B8M	Class 2 Stainless steel, AISI 316, carbide solution treated, strain hardened

Shanghai Genrui Industry Co., Ltd.: Contact nameLg Zheng
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