Shenzhen Qiangtuo Fastener Co., Ltd
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Financial industry

Financial industry

Our QT screws are widly used in financial cabinet such as ATM machine,safe machine etc. The fastener parts of a financial carbinet including:screws,bols,nuts,washers,E-ring/retaining ring,key,rivets,spring pins,tubular spacer etc. QT is a professional financial carbinets fastener factory, can provide clients one-stop products and service. QT products in this field has over 17 years experience,can supply qualified products and reliable service .

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Engineering &construction  industry

Engineering &construction industry

Outdoor billboard  projects with high demand of all kinds of screws,bolts and nuts.

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Transportation industry

Transportation industry

We have supplied Shenzhen Metro  many bolts with high quality.

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Machinery & equipment industry

Machinery & equipment industry

In the machinery industry ,QT has provided large amount of fasteners. QT screws can be widely used in all kinds of machines and equipments. Qualified screws and bolts are sustainable available. The below pictures are from one of our clients using QT screws assembly their products.

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China factory Auto Black Hex Head Bolts

High quality,rapid distribution, competitive prices and first class services.



  • item no.:

    QT039
  • payment:

    T/T, L/C,or others
  • market price:

    $0.005
  • price:

    $0.003
  • product origin:

    China
  • MOQ:

    1000
  • color:

    Customized
  • shipping port:

    Shenzhen
  • lead time:

    Based on the quantity
product details

China factory Auto Black Hex Head Bolts


The auto black hex head bolt is a fastener with a hex head and mechanical threads,can be used with a nut or a threaded hole. It can also be called a hex cap screw or a mechanical bolt.
The high-strength steel construction of the Auto Black Hex Heads bolt ensures the strength and flexibility of the fasteners and is widely used in construction and maintenance projects.


Auto Black Hex Head Bolts Feature


Product name:Auto black hex head bolt

Brand:QT

Place of Origin:Shenzhen,China

Finish:Plain,ZP,YZP,HDG,or customized

Material:Carbon Steel,stainless steel or customized

Samples:Samples are free

Hardness:Grades customized

Payment:T/T,L/C,or others

Standards:DIN,GB,JIS,KS,CNS,ANSI/ASME,BS,AS,EN,GOST,ISO,UNI,Q,NF,IFI

Non-standards:OEM is available,according to drawings or samples

Package:In standard exported packing,or according to customers' requirement

Auto Black Hex Head Bolts Application



machine screws application


Auto Black Hex Head Bolts Series Show


Auto Black Hex Head Bolts


Machine screws:a machine screw is usually described as small diameter bolt. It features a straight ,untapered  shank and a blunt end. QT supplys various kinds of machine screws.Standard and non-standard are available.
Self tapping screws:self tapping screws series including drywall screws,chipboard screws,self drilling tapping screws,sheet metal screws,wood screws.
Hex & Hex socket screws:both hex and hex socket screws are available. We have rich experience over 17 years.
Nuts: metric nuts  and customized sizes for your choosing.
Bolts: metric bolts and customized sizes, all kinds of types such as wing bolts,eye bolts,expasion bolts etc.


Company profile


Auto Black Hex Head Bolts

FAQ-Auto Black Hex Head Bolts


Q1: How does the payment process work?

A1: Payment terms are flexible for us in accordance with specific conditions. Generally we advise 50%TT deposit, balance be paid before shipment.


Q2: What do you need to provide a quote?

A2: Please kindly send us the drawing of your product. Details below should be included,

A. Materials B. Surface Finish C.Specifications D.Quantity


Q3: What will you do for after sales?

A3: When our metal parts apply to your products, we will follow up and await you feedback. Any question related to our metal parts, our experienced engineers are ready to help.



Best Auto Black Hex Head Bolts in QT manufacturer,we can provide high quality and customized service,any questions or need more information, please feel free to contact with us.welcome to visit our factory!

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You can contact us any way that is convenient for you. We are available 24/7 via fax, email or telephone.

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