Hex Head Bolts

Custom Bolts Manufacturer


Best Hex Bolts Manufacturers

  • ISO9001, IAFT16949 Certificated
  • High precision CNC MACHINE
  • Precision+/-0.05mm CNC+/-0.02
  • 22Year Experience
  • In House Lab: Sclerometer, Hardness tester, Caliper, Torsion meter, Salt atmosphere testing machine, Projector, Die gage, Image screening instrument spectrometer


Hex Bolts Details

Bolts are indispensable in daily life and industrial manufacturing. Bolts are also known as industrial meters. It can be seen that the bolts are widely used. The application scope of bolts and nuts includes automotive, construction, electronic products, mechanical products, digital products, electrical equipment, electromechanical mechanical products. Bolts and nuts are also useful in ships, vehicles, water conservancy projects, and even chemical experiments. Anyway, bolts are used in many places. Precision bolts used on special digital products. Miniature bolts for DVDs, cameras, glasses, watches, electronics, etc .; general bolts for TVs, electrical products, musical instruments, furniture, etc .; for engineering, construction, and bridges, large bolts and nuts are used; transportation appliances, aircraft, trams, automobiles The equivalent is the combination of large and small bolts.

There are many types of bolts and hardware nuts. Most, if not all, bolt types have machine threads, A threaded bolt screws into nuts to hold or fasten materials together.

Hex Bolts(Six-sided Heads) are the industry standard for fasteners with forged heads, for specifications such as A307 Grade B, A325, and A490 that require a heavy hex pattern.

Hex Bolts also called Hex Head Bolts to have hexagonal heads and machine threads for use with a nut or in a tapped hole. as hex cap screws or machine bolts

Many bolts are held fixed in place during assembly, either by a tool or by a design of non-rotating bolt, and only the corresponding nut is turned


Hex Bolt Chart

Nominal thread(d) Pitch(P) K(max) K(min) S(max) S(min)

Custom Hex bolts are available, no matter what materials, stainless steel, carbon steel, titanium, brass, plastic, aluminum etc

Grade 4.6, 4.8, 5.6, 6.8, 8.8,9.8, 10.8,10.9, 12.9


Hex Bolts Application

Hex bolts can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as docks, bridges, highway structures, and buildings. Hex bolts with forged heads are also commonly used as headed anchor bolts.

Types Of Hex Head Bolts

Hex bolts can be either fully threaded or partially threaded (featuring a clear shank along part of the body) and are suitable for use in a wide range of applications, typically machinery and construction. automotive, vehicles, and more. types include

  • Fully Threaded Hex Bolts.
  • Partial Threaded Hex Bolts.
  • Metric Hex Bolts.
  • Imperial Hex Bolts.

They are called partial thread bolts because of the part that has no threading. This non-thread area of a bolt, also known as the bolt shank or shoulder of the fastener, will vary in length depending on the bolt’s application. Also partially threaded shank to protect them against loosening. When driven into an object or surface, they’ll stop automatically after reaching the end of the threading. And like fully threaded screws, they can be used either with or without nuts and washers

Fully threaded bolts have threads that run the entire length of the bolt whereas partially threaded bolts have an unthreaded area just beneath the head and then have partial threading the rest of the bolt length. They are ideal for use in heavy-duty fastening applications and are best suited to installation in pre-threaded holes

How do you remove a hex bolt?

Use a hammer to tap against the hex-key wrench in extreme cases. Pour a few drops of household oil or spray a shot of aerosol lubricant on screw heads that do not come loose with the additional tools. Allow 20 minutes for the lubricant to work in between the threads before attempting removal.

Not Find What You Need?

As a 20-year industry experience manufacturer with a factory equipped with precision machines, we can provide, from consultation to production, a one-stop solution for you. For an accurate quotation, You can tell us specifications, quantities, applications. Then we can offer you.

Best Quality

We have rich experience in the manufacture, design, and application of custom fasteners, and served more than 10000 customers worldwide

Competitive Price
we have an absolute advantage in the cost of raw materials. Under the same quality, our price is generally 10%-30% lower than the market.

With more than 22 years, we already have completed the control system and test equipment, we can provide all tests you need


Any feedback will be replied to within 24hours, We provide a 3-5 years guarantees policy. And all costs by us will be on our account.

Fast delivery

If you need urgently, we can deliver samples within 8hours. Bulk order can be within one week

Frequently Asked Questions

Hex bolts, or hex cap screws, are large bolts with a six-sided head (hexagonal!) used to fasten wood to wood, or metal to wood.

Hex bolts, also called hexagon screw head bolts, hex cap bolts, hex cap screws, or machine bolts, are a very common choice when it comes to construction and repair. Hexagon screw head bolts come in a large variety of sizes and diameters.

Hex Bolts are bolts with external threading and a hex head designed to be driven by a wrench.

Machine screw sizes (diameters #4 – #12) of hex bolts are known as “trim head hex screws” and are always fully threaded

Allen wrenches, which are also called hex-key wrenches or hex keys, have a hexagonal cross-section to fit various machine screws and set screws that have hexagonal-shaped recessed holes

About Us

Shenzhen Heat Hardware Co., Ltd is a leading custom screw manufacturer in China founded in 2000 years. We are specializing in custom screws, security screws, Sems screws, Chicago Screws, Weld Screws, Long screws, Micro Screws, Thumb Screws, Set Screws, Custom bolts, carriage bolts, nuts, and other custom Fasteners. With more than 20years of industry experience. We have serviced over 20000customers including the aerospace industry, automotive industry, electronics, mechanical and electrical products, robots, the Medical industry, communications industry, Outdoor sports products, smart appliances, etc. we can provide one-stop fastener customized service for you no matter what kind of custom fastener you need.

Why Choice us

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Production Process

We have a variety of production requirements of equipment, can meet any customized demands. can provide comprehensive fastener solutions. Anything you need can make by Heatscrew.

Material Preparation

Threading Rolling

Automatic Lathe

CNC Process

Final Test