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  1. Black Oxide High Strength Gr12.9 Hex Head Bolt
  2. Black Oxide High Strength Gr12.9 Hex Head Bolt
  3. Black Oxide High Strength Gr12.9 Hex Head Bolt
  4. Black Oxide High Strength Gr12.9 Hex Head Bolt

Black Oxide High Strength Gr12.9 Hex Head Bolt

        Black A325 hex head bolt1). Standard: ASTM A325 bolt, A490 bolt, DIN6914 bolt, AS1252 bolt, BS43952). Material: Carbon steel, alloy steel, stainless steel, etc.3). Sur

  1. Detailed information

        
Black Oxide High Strength Gr12.9 Hex Head Bolt

Black Oxide High Strength Gr12.9 Hex Head Bolt


Standard:

DIN,AMST,ISO


Size:

M5-M100


Material:

Alloy steel


Grade:

12.9


 Thread:

METRIC


Finish:

Plain,Nickel, Chrome


Packing:

bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand


Application:

Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating


Test Equipments:

Caliper,Go&No-go gauge,Tensile test machine,Hardness tester,Salt spraying tester, H.D.G thickness tester, 3D detector,Projector,Magnetic flaw detecter


 Supply Ability:

1000 tons per month

 MinimumOrder:

 500kgs for each specification

Trade Term:

FOB/CIF/CFR/CNF/EXW/DDU/DDP

  Payment

T/T, L/C

Market:

South&north Amrica/Europe/East&South east Asia/ Australia and ect.

Professional:

More than 10 years experience in fasteners industry

Our Main market is North&South America and proficient in IFI standard.

Our advantage:

One-stop shopping;

High quality;

Competitive price;

Timely delivery;

Technical support;

Supply Material and Test Reports;

Samples for free

With 2 years quality guarantee period after shippment.

                Notice:

Welcome your inquiry!!!

Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us



The performance grades of bolts for steel structure connection are divided into more than 10 grades, such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, among which bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel and are heat-treated (Quenching and tempering), commonly known as high-strength bolts, and the rest are commonly known as ordinary bolts. The bolt performance grade label consists of two numbers, which respectively indicate the nominal tensile strength value and the yield ratio of the bolt material. E.g: The meaning of bolts of performance class 4.6 is: 1. The nominal tensile strength of the bolt material reaches 400MPa; 2. The yield ratio of bolt material is 0.6; 3. The nominal yield strength of the bolt material reaches 400×0.6=240MPa Performance grade 10.9 grade high-strength bolts, after heat treatment, can reach: 1. The nominal tensile strength of bolt material reaches 1000MPa; 2. The yield ratio of bolt material is 0.9; 3. The nominal yield strength of the bolt material reaches 1000×0.9=900MPa The meaning of the bolt performance grade is the international standard. The bolts of the same performance grade have the same performance regardless of the difference in material and origin. Only the performance grade can be selected in the design. The so-called strength grades of 8.8 and 10.9 refer to the bolts’ shear stress resistance grades of 8.8GPa and 10.9GPa