Hex Cap Screw | Hex Bolt Manufacturer in China | Bolt Factory

Hex Cap Screw | Hex Bolt Manufacturer in China | Bolt Factory

Hex Bolts, Hex Cap Screws, Metric Bolts, ANSI/ASME Bolts

  • Standard: DIN931, DIN933, ISO4017
  • Sizes: M3, M4, M6, M8, M10, M12 ... to M64
  • Surface: Black Hex Bolts, Galvanized Hex Bolts, Zinc Plated Bolts, Decromet Coated Bolts
  • Grade: 4.8, 6.8, 8.8, 10.9, 12.9

Hex Bolt Screw, Bolt Factory, Hex Bolt Manufacturer in China

High Strength Metric and ANSI Hex Head Bolts, HDG, Zinc or Black

Fastenwel is one of the leading hex bolt manufacturer in China, with over 15 years experience of fasteners production and technology. Our expertise are manufacturing and exporting carbon steel hex bolts and stainless steel hex bolts, both metric hex bolts and ANSI/ASME bolts, black or black oxide hex bolts, hot dip galvanized hex bolts grade 8.8 or 10.9, titanium hex bolts, customized hex bolts, high strength hex bolts, as well as structural bolts and nuts at the best factory delivery and prices.

  • Material: Carbon Steel, Alloy Steel, 1008, 1035, 1039, 1045, 4140, 
  • Grade: 4.8, 8.8, 10.9, 12.9, b7 (grade 8, grade 5 and grade 2)
  • Thread: Half Thread or Full Thread
  • Application: Industrial or Construction Fasteners for steel structures, oil and gas, valves and piping, wind energy tower, automotive etc
  • Package: 25kgs/carton, 36cartons/pallet or customized package as client's requirements
  • Delivery: 30-45 days for regular production
  • Customized hex bolts dimensions can be produced as per your samples or design.


For Hexagon head bolts dimensions, drawing and weight, please contact us at info@fastenwell.cn

Types of Hex Bolts

Hex Bolt Manufacturer /Metric Hex Bolts DIN 931, DIN 933 / ANSI Hex Bolt ISO4014, ISO4017

As one of the professional hex head bolt manufacturers in China, Fastenwell manufacture different types of hex head bolts, hex flange bolts, carriage bolts, hex structural bolts in regular dimensions and sizes, if you couldnot find the bolts you want in our page, please contact us directly with your requirements.

High Strength Hex Bolt and Nut Manufacturing / Bolt China

As a hex bolts manufacturer and hex head bolt suppliers, Fastenwell produce different types of hex bolts in our production lines, specially metric & ANSI hex bolt, black hex bolt, HDG hex bolt, stainless steel hex bolts, structural hex bolts, titanium head bolts etc. Small boxes or standard exporting cartons package are available.

Fastenwell is one of the largest China fasteners manufacturer and supplier, especially for bolt and nut  manufacturing, as well as bolt & nut supply, so if you want to figure out what is a hex bolt, where to buy metric bolts, or how to find a bolt factory in China, you can find your answer easily in our company page or write to us directly for further details like hex head bolt dimensions chart or hex head bolt weight chart.

What is a hex bolt?

Hex bolt has hexagonal head with six sides and which can be tightened with a spanner or wrench, usually work with hex nuts and washers. There are different types of hex bolts including, hex cap bolt, hex tap bolt, hex flange bolts, hex structural bolts, heavy hex bolts etc. Fastenwell is one of the leading hex bolt manufacturers and suppliers in China. If you want to find a professional and reliable factory and supplier for hex bolts, you can definitely count on us.

Where are most bolts made?

The top five fastener exporter in global market are Germany, China, the United States of America, Japan and Italy. China as the second largest exporter of iron fasteners, which account for 16% of exports of iron fasteners to globe market, including bolts, nuts, screws, studs and rods, pins, revets etc. Our Fastenwell is one of the most professional bolt manufacturers in China and provide a comprehensive fastener solution like bolt, nuts and stud set in steel structure, oil & gas, valves, piping and fittings, automotive, energy applications etc.

What are Hex Bolts Standard?

Hex bolts standard including DIN931, DIN933, ISO4014, ISO 4017, different in half or full thread hex bolts, and one is DIN and another is ISO standard.

What are the bolt standard (Properties)?

The latest standard for bolts is ISO898-1:2013, which specifies the mechanical and material properties of bolts, screws and studs made of carbon steel and alloy steel used in bolting assemblies, as well as specifies the methods to test and verify these properties.

What are the properties of a hex bolt?

Hex bolt as a hexagon head with six sides, half or full thread, metric or ANSI sizes and thread, different grade from 4.8 to 12.9, or grade 2 to grade 8, which will be show on its bolt head, and different surface or finish like hot dip galvanized, zinc plated, black, Dacromet, Geomet or Teflon etc. If you want to get formal prices for your bolt request, you should at least provide bolt standard, sizes, grade and surface requirements to hex bolt manufacturers or bolt factory.

What does M mean in bolt sizes?

"M" means metric thread, which usually follow with numbers with indicate the diameter of the bolt, for example m6 hex head bolt, m8 hex head bolt, 6 and 8 means the diameter, sometimes will also follow the pitch of the thread, which are produced as per standard.

What does 8.8 mean on a bolt?

8.8 means the grade of the bolts, there are also grade 10.9, 12.9 bolts, these high strength hex bolts or structural bolts are widely used in indstrial and construction applications like steel structure, space frame, oil & gas, valves, piping, energy etc. Fastenwell specialized in bolt & nut supply for different applications, if you need suggestions on bolts selection, please feel free to write us, and we could check quickly if our expertise could be supportful for your applications.

What does ASTM mean bolts?

ASTM means "American Society for Testing and Materials", which is one of the largest international standards organizations for bolts specifications, including carbon steel, alloy steel as well as stainless steel bolts, especially for high strength, high tensile, high pressure and temperature applications. ASTM standard bolts can be manufactured and supplied by Fastenwell's production.

What is the difference between 8.8 and 10.9 bolts?

Class 10.9 is stronger than class 8.8, both are most common seen in high strength applications like steel structure, automotive and energy industry.

What is ASTM A193 gr B7?

ASTM A193 Grade B7 refers to the properties of bolt and material, which are high tensile steel bolts used in high temperature and high pressure applications like oil & gas, valves & piping, flange and fittings etc. We have lots of customers and experiences in these applications. If you are looking bolt or rods material ASTMA193 B7, please feel free to send us RFQ list at info@fastenwell.cn.

Are hex bolts screws?

Bolts and screws are often different with each other in sizes, small screws and big bolt, but some also call hex bolts as hex cap screws, so somehow bolts are large screws which used to fasten wood to wood, or metal to wood, etc.

Are hex bolts stronger than screws?

Yes, general speaking, bolts provide greater holding strength than screws. This is partly due to the presence of the washer under the bolt head, which spreads out the load over a larger surface area to make them work well for heavy-duty, load-bearing applications in industrial and construction industry.

Why do hex bolts should not be over tightened?

Over tightened is one of the most damaging way to damage a hex bolt, which can result in stripping bolts, snapping bolt heads and damaging pre-tapped threading and reduce the lifetime of the fasteners and connections.

What bolts are the hardest to break?

Usually the higher the bolts grade, the hardest it will break, for metric bolt, grade 12.9 is the hardest, while for ANSI bolt, Grade 8 is the hardest. It depends on the requirements of application and choose which grade of bolts to be used. 

What is a hex cap screw?

Hex Cap Screw is one of the most common seen fasteners used in construction and industrial machines assembling. As its name suggest, hex cap screw usually with a hexagonal head or hex socket head, with a partial thread or fully thread screw body.

What is the difference between a hex bolt and a hex cap screw?

Hex Cap Screws vs Hex Bolts

When hex cap screw with a external hex head, then it also a hex bolt. When hex cap screw with a socket head, it will be a hex head socket cap screws. Hex head bolts work with nuts to tighten, while cap screws working with hex key to fasten. Hex cap screws mostly used in application of limited space.

What are hex bolts called? What is another name for hex bolt?

Hex bolts, also called hexagon head bolts, hex cap bolts, hex cap screws, or machine bolts, which widely used in construction and industrial assembling and repairing. Hexagon head bolts come in different sizes and dimensions. Fastenwell is a hex bolts manufacturer and supplier who produce, stock and supply hex head bolts range from size M3 to M64, length up to 300mm. For best price and delivery of metric hexagon bolts, please contact us directly at info@fastenwell.cn.

What's the difference between din 931, din 933, iso 4014 and iso 4017?

din931 vs din 933 - din 931 is a partial thread hexagon head bolts, din 933 is a fully thread hexagon head bolts.

iso 4014 vs iso 4017 - iso 4014 is half thread hex cap screw bolt, iso 4017 is full thread hex cap screw.

iso 4014 vs din 931  iso 4014 is ansi hex bolts while din 931 is a metric hex bolts, they are both partial thread hexagon head bolts.

iso 4017 vs din 933 - iso 4017 is ansi hex bolts while din 933 is a metric hex bolts, both are fully thread hexagon head bolts.

Fastenwell is a hex bolts manufacturers and suppliers in China, and produce and export all above mentioned hex bolts standards. We manufacture and supply standard bolt & nut, as well as customized bolt and nut manufacturing. 

What are hex head screws used for?

Hex bolts, or hex cap screws, especially, high strength and tensile hexagon head bolts and hex cap screws are used in construction like building, railway, bridge, oil and gas industry etc, available in grade 4.8, 8.8, 10.9, 12.9.

What are the different types of bolt heads?

Fastenwell manufacture different types of bolts including hexagon head bolts, round head bolts, square head bolts, hex flange head bolts, socket head bolts, etc.

Do Hex Bolts need washers?

Yes, hex head bolts with washers to even the surface pressure under the bolt head and nut face to secure the installation.

What material is a hex bolt?

There are carbon steel hex bolts, alloy steel hex bolts and stainless steel hex head bolts. It depends on customers' actual requirements.

Which screws is better allen screw or hexagon head?

Allen screws (Allen bolts) and hexagon head bolts are used in different application according to customers' requirements. Hexagon bolts are large bolts used in construction and industrial equipment, while allen screws are used as machine screws in applications with limited space and require strict tolerance.

When would you use a hex bolt?

Hex bolts are used to fasten wood, metal, steel, plastic and other materials. Hex head bolts (Tornillo) din 931 and din933 are commonly used in buildings, bridges, docks and highway structures etc.

What are bolts without heads called?

Bolts without heads are called set screws, studs, double end studs etc. Usually they are fully threaded and with no bolt head. Except well known as a hex bolts manufacturers, Fastenwell also produce studs and threaded rods.

Where to buy metric bolts?

No matter it's metric bolts or ANSI/ASME bolts, you can always count on Fastenwell to provide you the best quality and price bolts and nuts. Fastenwell is a bolt factory, who has both bolt & nut supply from China, if you are wondering where to buy metric bolts, you are lucky to find us and please feel free to ask us, we are here at your services.

FAQ of Hexagon Head Bolts

1. Are you a hex bolts manufacturer?

Yes, Fastenwell is a bolt factory, hex bolts manufacturers and suppliers, as well as leading fasteners manufacturers in china.

We mainly porduce black oxide hex bolts, countersunk hex head bolts, metric hex head bolts, stainless steel hex head bolts, titanium hex bolts etc.


2. How long is your delivery time for black hex head bolts?

It takes 7-10 days for stock products. For bulk order, it will be in 30-60 days according to the order quantity.


3. Can we have samples for metric hex head bolts?

Yes, free samples are available, if you have a courier acount like DHL/FEDEX/UPS to collect the samples.


4. Can we use our own head mark or customize package for hex head bolts?

Yes, Fastenwell as a hex bolts manufacturers, we can customize headmark and package, please send the requirements when place order.


5. How can we make an order for metric hex head bolts?

Just inquiry on our page or send a email to info@fastenwell.cn.


For hex head bolt dimensions or weight chart for din 931, din933, iso 4014, iso 4017 pdf, please feel free to contact us.


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