DIN931 Grade 8.8 Hexagon Head Bolt Fluorocarbon Coating

Product Details

Product Description

Product Description
Material:Surface:Standard:Head Type:Thread:Delivery Time:Property Class:Metric Size:High Light:

Carbon Steel	HDG,Zinc Plated(Clear/Blue/Yellow/Black), Black Oxide, Nickel
DIN933, DIN931, ASME B18.2.1, ISO 4017, ISO 4014, IFI 149	Hexagonal Head
UNC,UNF,UEF,UN,UNS	8-20 Days
4.8,5.8,6.8,8.8,10.9,12.9	M6-M56
Grade 8.8 Hexagon Head Bolt, DIN931 Hexagon Head Bolt, Fluorocarbon Coating Hexagon Head Bolt

Big Black High Strength Grade 8.8,10.9 12.9 Outer Hexagon Head Bolt with Hex Nut AssemblyThe shape and connection structure of high strength bolts are basically the same as ordinary bolts.The main difference is that the normal bolt connection relies on the shaft pressure and shear resistance to transmit the shear force, while the bolt produces very little preload when tightening the nut.Whatever the impact, the working principle of high strength bolt connection is to deliberately apply a large pre-tightening force to the bolt, so that the contact surface of the connection part produces press pressure, so that there will be a great deal of friction in the direction perpendicular to the bolt.Directional force of screw.The frictional force that transmits the shearing force of the connection.The pre-tightening force of high strength bolts is achieved by tightening the nuts.Common high strength bolts generally adopt torque method and Angle method.The tail of the torsion bolt is used to control the preloading force of the high strength torsion shear bolt.
Bolts connected by high strength bolting are made of 10.9S or 8.8S high quality alloy structural steel and are made by heat treatment.Holes for high strength bolts should be drilled.Diameters of high strength bolts connected by friction are 1.5 ~ 2.0mm larger than nominal diameter D of bolts.The hole diameter of the high strength bolt under pressure connection is 1.0 ~ 1.5mm larger than the nominal diameter D of the bolt
Feature:

Product name	hex head bolt
Size	M8-M56
Material	Carbon Steel
Property class	4.8, 5.8, 6.8, 8.8, 10.9, 12.9
Thread	UNC,UNF,BSW
Finish	ZincPlated(Blue/Yellow/Black),Black,HDPE,Fluorocarbon Coating, XYLAN
Packing	Bulk in cartons on wood pallet or according to customer special demand.
Application	Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile

Advantage
1. Competitive price; 2. OEM service available
Packing
Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
Payment terms
FOB, CIF, CFR, L/C, or others.
Delivery method
by sea, by air or by express service
Application
Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating and etc.

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