• Sourcing Solutions
  • Services & Membership
  • Help & Community

Quick Details

  • Place of Origin: Jiangsu, China (Mainland)
  • Brand Name: GJT
  • Model Number: HSB-599
  • Standard: DIN, ANSI, BS, GB, ISO, JIS, Other
  • Product name: hex socket head bolt din912 black
  • Material: Carbon Steel, Alloy Steel, Stainless Steel, Copper, Ti,brass ,Al,Mg
  • Grade: 2, 4, 4.8, 5,6, 6.8, 8, 8.8, 10.9, 12.9, 14.9
  • Surface treatment: Zinc, Zn/Ni, Ni, brass plated, dacromet, hot-dipped galvanized
  • Color: White, blue, yellow, black, OEM
  • Diameter: M1-M100
  • Length: 2mm-3000mm
  • Delivery Time: 7-60days
  • Package: Small packing+Carton Packing+Pallet

Packaging & Delivery

Packaging Details 20-25 kgs in one plastic bag per carton and 36 cartons per pallet,600-1000kgs per pallet,or according to customer's requirement
Delivery Time 7-60days after receiving your payments

hex socket head bolt din912 black

Product Description

Bolts: It is comprised of head and screw rod (cylinder with external thread), and should be used together with a nut, to connect the assembled parts with through-hole. This means of connection is called bolt connection.


We can manufacture various hex socket head bolt din912 black which meet the GB, DIN, ANSI, JIS and ISO standard. We support customized and can also manufacture HSB-599 automobile parts according to drawing.


Our fasteners have various stypes, such as Bolts, Screws, Studs(Threaded rods), Nuts, Washers, Rivets, Non standard Products, Precious parts, stampling, Casting parts, etc.


Product Show


Product parameters


Product Name  hex socket head bolt din912 black
Size Diameter: M1-M100        Length: 2mm-3000mm
Material Carbon Steel, Alloy Steel, Stainless Steel, Copper, Ti,brass, Al, Mg
Grade 2, 4, 4.8, 5, 6, 6.8, 8, 8.8,10.9,12.9,14.9
Finsh Zinc plate (white,blue,yellow,black), Zn/Ni plating, Mechanical zinc  plating, Cr3+, black oxide, Ni plate, brass plate, electrophoresis,  dacromet, hot-dipped galvanized, positive electrode oxidization, etc.
The Most Precise Tolerances  That GuJietong Can Process

 1) Shaft diameter below 6mm and maximum pore size tolerance up to  0.003mm

 2) Shaft diameter larger than 6mm and pore size tolerance is 0.005mm

 3) Linearity below 100mm distance etc, tolerance is up to 0.005mm

 4) 100mm or more distance linear tolerance is up to 0.01mm

 5) A form tolerance is up to 0.003 - 0.005mm

 6) Position tolerance is up to 0.01mm

Production Equipment

 1) CNC Machining Center;

 2) CNC Lathe;

 3) CNC Milling Machine;

 4) Precision Cutting Machine

Measuring Instruments and  Equipment

 1) micrometer

 2) smooth plug gauge

 3) thread gauge

 4) Image measuring instrument

 5) Coordinate Measuring Machine

 6) Roughness tester

 7) routine inspection of calipers

Preferred Drawing Formats JPEG, PDF, CAD, IGS, STP
Preferred Industries

 1) Communication Equipments

 2) Medical Equipments

 3) Photo electricity Equipments

 4) Auto Industry

 5) Mechanical Equipments

 6) Other customized Parts

Our advantages

 Small MOQ can be accepted


 Free samples can be provided within 1-2days if from stock.


 Samples will be send to customers for quality confirmation before  shipping and steel certificate and inspection report can be provided!


Other services are consulted in  dealing If you have any inquiry, just feel free to contact and let me know  which exactly item(type) you need, I will do my best to service








If you are interested in knowing more details, or the newest messages,  please click on the following link: 



Production Process

From the raw materials to the finished products, we can satisfy customers' requirements by high quality products and best services by means of scientific and reasonable layout of the plant, advanced automatic manufacturing equipment and digital management.



From raw materials to end product delivery, it has a strict control program. Accurate completion is done about

Standard parts: wiring- roughing – annealing- pickling - drawing – heading(cold forging or hot forging) – threading(rolling) - heat treatment -surface treatment –cleaning –inspecting-packaging  


Customization parts: heading, stamping or casting-wire cut edm machine -CNC (machining center) -grinder threading(rolling) - heat treatment -surface treatment –cleaning –inspecting-packaging.


Inspection equipment

Laboratory currently has the calliper, micrometer, depth and height gauge, thread gauge, plug and ring gauge, tension and torque gauge, hardness tester, salt spray tester, Film thickness tester, desktop direct- reading spectrometer, metallographic analyzer, carbon sulfur analyzer, multifunctional electrolysis thickness gauge, spectroscope, projector, hydraulic tensile tester, automatic screening machine, magnetic detection machines and a variety of specialized testing equipment. 


We aslo can provide series control plan document, such as incoming material quality control(IQC), in-process quality control(IPQC), statistical process control(SPC), final QC(FQC), Faliure mode & effect analysis (FMEA), PPAP.




Packaging & Shipping

Delivery Time:  7-60days after receiving your payments


The regular package is big plastic bag, cartons and pallets. 20-25 kgs in one plastic bag per carton and 36 cartons per pallet, 600-1000kgs per pallet. Also we can pack as per the requirements of clients.


Company Information

Our company is established in 1998. We are engaged in manufacturing and selling professional fastener and mechanical parts. We often make DIN, ANSI, BS, ISO and JIS standard and customization in industrial fields. We also have a professional quality control team. We have developed 10,000 kinds of non-standard parts.


We have long-term business cooperation relationships with many well-known multinational companies, and provide HSB-599 services.Our products have been exported to the UK, Germany, American, Canda, Italy, Japan and other European, Middle East and South Africa countries.


Welcome to consult, we will provide all-direction one-stop services for you. And also we are looking forward to establishing business relationship with your company in near future.

Why choose Wuxi GuJietong ?


 (1) Create value for our valuable customers

 We always provide high quality and Oem high precision design products to meet the needs of the customers. We are the leader in this field and we always provide good products and service to our valuable customers.


(2) Better Quality with Lower Price

 We always supply the better price on the same quality level, and try our best to save the client’s every cent.


(3) Never stop developing the New Product.

 Every year, our company will develop the new products to meet the market need.


(4) Manufacture & Export experts

 As we have a favorable frame and stable quality control, our products can be found in nearly all continents. 23 years of manufacture & export experience, deliver goods by different means: truck, rail and sea containers.


(5) We have enough stock in warehouses with abundant capital. We offer 24-hour services.


(6) We have professional system and rich experience to control the quality, Every process will be checked by our quality inspection department which insures every product's quality.


(7) Professional packing teams which keep every packing safely.


(8) Samples can be provided as your requirements,we can provide customer samples we have for free,and make the customized ones with lowest charge.



Wuxi GuJietong has passed ISO9001: 2008 international quality system certification in 2006 and TS/16949 automobile quality control system in 2014. We also obtained special equipment manufacturing license(for pressure pipeline ) in 2010. We have effected "global product liability insurance" for our products from People's Insurance Company of China.



Q1: What is your main products?

A1: Fasteners, bolts, screws, studs(Threaded rods), nuts, washers, rivets, non standard products, precious parts, stampling, casting parts, etc.


Q2: What is your delivery time?

A2: It depends on if we have stocks or not. If we have stock goods, we can delivery with 7 days after receiving your payments. And normally our production is 50 tons in every month.


Q3: What is the most precise tolerances that we can process?

A3: 1) Shaft diameter below 6mm and maximum pore size tolerance up to 0.003mm,

      2) Shaft diameter larger than 6mm and pore size tolerance is 0.005mm,

      3) Linearity below 100mm distance etc, tolerance is up to 0.005mm,

      4) 100mm or more distance linear tolerance is up to 0.01mm,

      5) A form tolerance is up to 0.003 - 0.005mm,

      6) Position tolerance is up to 0.01mm.


Q4: What about the warrant?

A4: We are very confident in our products, and we pack them very well to make sure the goods in good protection.

      To avoid any subsequent trouble regarding quality issue, we suggest that you check the goods once you receive them. If there is any transport damaged or quality issue, don't forget to taking the detail pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest. 


Contact Information

Gujietong Metal Manufacturing Co.,Ltd

Manager: Shirley Cheng

Tel: 86-66066069             Mobile: 0086 15951587693

Fax: 86-510-88679738


Transaction History of the Supplier

Below is the information about the supplier's transactions conducted via Alibaba.com. If you require further details regarding the transaction data, please contact the supplier directly.

Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

Shipping Destination
Transaction Value
Transaction Date
Email to this supplier
China (Mainland) | Trading Company
Transaction Level:
Supplier Assessments:
2 Transactions 5,000+
The supplier’s transactions conducted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $35,000
Learn More