High Tensile Black Oxide Heavy Hexagon Head Bolt

Model NO.
Steel Structure
Tensile Strength
Yield Strength
Min. 940MPa
Tensile Load
Transport Package
Carton and Wooden Pallet
Hangzhou China
HS Code
Innovation, excellent and reliability are the core values of our business. These principles today extra than ever form the basis of our success as an internationally active mid-size company for High Tensile Black Oxide Heavy Hexagon Head Bolt, The product will supply to all over the world, such as: Georgia, Germany, Hyderabad, We welcome you to visit our company, factory and our showroom displayed various products that will meet your expectation, meanwhile, it is convenient to visit our website, our sales staff will try their efforts to provide you the best service. If you need more information, please do not hesitate to contact us by E-mail or telephone.
Hangzhou Jiaxiang Gaoqiang Bolts Co., Ltd. Diamond / Audited Supplier
High strength friction grip bolt sets for steel structures
Product name heavy hex head bolts
Standard GB/T1228-1231
Grade 10.9S
Dia. M12~M36
Length 40~300MM
Materials: Carbon steel or Alloy steel—20MnTiB,45# / 35VB 35CrMo/42CrMo B7.ect.
Available finish Dacromet, black oxide, phosphating, electronic galvanized,ect.
Bolt Set set= 1 bolt + 1 Nut (10H)+ 2 washers(10S)
Head marking HYZ+ 10.9S/8.8S or customers brand + 10.9s/8.8s
Packing Carton and wooden pallet or wooden case; barrel+wooden pallet
Certification: FPC BC1, SGS,BV,ISO, factory testing report.

Class of bolt, nut and washer

Components Bolt Nut Washer
Class  10.9 10H    HRC35~45
 8.8 8H    HRC35~45

Mechanical properties of 10.9S Bolt:

Properties    Yield strength
Tensile strength
Reduction of area



≥ 940
         ≥  10         ≥  42

Hardness of 10.9 bolt set

Bolt hardness Nut hardness Washer hardness
33HRC~39HRC 98HRB~32HRC HRC35~45

Hardness of 8.8 bolt set

Bolt hardness Nut hardness Washer hardness
24HRC~31HRC 95HRB~30HRC HRC35~45

 Pls contact us to know more detials~!

                                                                 Main packing way

We are professional in manufacturing high strength tension control bolts and heavy hex head bolts, shear studs for steel structures. All products can be manufacture as per international standard or customer drawing. for details, welcome for negotiation. 

Per Batch goods will be together with 3.1 certificate or the 3rd party inspection report.