1-3/8" Alloy Steel Gr 2H Bichromate Coated Heavy Hex Nut For Flange Bolt

Product Details

Product Description

Product Description
Material:Standard:Size:Finish:Thread:Color:High Light:

A194 2HM	ASME B18.2.2
1/4"-4"	Bichromate Coated
UNC, UNF	Yellow Zinc
Bichromate Coated Heavy Hex Nut, Gr 2HM Heavy Hex Nut, Flange Bolt Hex Double Ended Bolt

Bichromate Coated Heavy Hex Nut 1/4"-4" Alloy Steel ASTM A194 Gr. 2HM For Flange Bolt
Zinc Yellow Bichromated process using electrolysis, this galvanic process deposits a zinc coating onto the product surface. The electrolytic process uses an aqueous solution in combination with electrolysis to produce a solid zinc deposit. The result is a smooth and bright layer. The layer thickness varies from 5 – 40 µm and is determined by the current density and the immersion time in the zinc bath. The galvanised layer is then treated with passivation solutions, such as chromate or dichromate, which increase the corrosion resistance and give a decorative appearance. The passivation layer is a thin zinc-chromium/zinc-oxide layer on top of the zinc coating. The zinc layer has a light blue translucent hue. This process releases hydrogen gas, which in the case of certain forged steels, can be absorbed into the material structure. There is no risk of material deformation.

Product Name	Heavy hex head Nut
Size Range	1/4"-4"
Standard	ANSI/ASME, DIN, BS,GB, ISO etc.
Size	Standard & non-standard, customized
Material	Carbon Steel/Alloy Steel
Grade	Grade 4.8/6.8/8.8/10.9/12.9
Thread	UNC,UNF,BSW
Finish	HDPE,Teflon, XYLAN, ZINC COATED
Application	Structural Steel; Metal Building; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile:
Supply Ability	About 20 tons per month
MOQ	100pcs

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