Flat Head Machine Screws

Custom fasteners Manufacturer

M3 M4 M5 Stainless Steel Flat Head Machine Screws

Type: Stainless steel machine screws, flat head machine screws

Material: Brass

Finish: Natural


Standard: Inches, Metric


A flat head machine screw is a type of threaded fastener that has a flat, countersunk head and a threaded shaft. The flat head design allows the screw to sit flush with the surface of the material being fastened, making it an ideal choice for applications where a low profile is desired. The flat head also provides a large bearing surface that helps to distribute the fastening force evenly, making it stronger and more secure.

Flat head machine screws are commonly used in a wide range of applications, including electronics, woodworking, metal fabrication, and many others. They are designed to be threaded into a pre-tapped hole, or used with a nut for fastening. The thread pattern on the shaft allows for efficient and accurate tightening with a screwdriver or power tool.

There are several variations of the flat head machine screw, including countersunk and rounded head styles, which offer different aesthetic options. They are also available in a range of materials, including stainless steel, brass, and steel, each with its own specific benefits.

Different Types of Machine Screws

There are four main machine screws: hex head machine screws, flat head machine screws, oval head machine screws, and cheese head machine screws.

  • Hex-head machine screws are the most common type of screw and can be used in various applications. They are available in multiple sizes and lengths to fit your specific needs.
  • Flat-head machine screws are designed to lie flush with the surface they are being installed into. This makes them ideal for applications with a desired smooth, finished look. Oval head machine screws offer a more finished look than flat head screws and are often used in decorative applications.
  • Oval head machine screws are a type of balanced screw between the more common industrial pan head (round head) machine screw and the more modern flat head machine screw. While pan head machine screws are left prominently protruding from the surface after being driven in, oval heads are less evident due to their curved undersides, which create a subtly countersunk profile. However, unlike machine screws with flat heads, they do not countersink remarkably smoothly.
  • Cheese head machine screws have a large, round head that is easy to grip. They are often used in applications requiring a large amount of torque to secure the screw.

No matter what type of machine screw you need, choosing the right size and length for your specific application is crucial. It is also essential to ensure that the head type matches the recess in the fastened part.

A stainless steel machine screw is a type of threaded fastener commonly used in various applications, ranging from small household projects to larger industrial operations. The term “machine screw” refers to the threading and shape of the screw, which is designed to be threaded into a pre-tapped hole or used with a nut for fastening.

Stainless steel machine screws come in a variety of sizes, styles, and shapes, including flat head, round head, pan head, and hex head. The type of head and the thread pattern can be chosen based on the specific requirements of the application.

MaterialStainless Steel, Alloy steel, Carbon Steel, Brass, Aluminum, and So on
FinishPlain, black, zinc plated/according to your requirement
PackagePlastic bag+Carton
SizeUS Size or Metric screws are available
StandardDIN, JIS,GB, ANSI..
PaymentT/T or Paypal
Screw Head TypeTruss Head
Drive TypeSlotted
Sizefrom M1 to M16 or customized
Product TypeM3 M4 M5 Stainless Steel Flat Head Machine Screws
Guaranteeone year
Thread typemachine thread
Lead time20days
ServiceCustomized as customer’s drawing or requirements
Deliveryby sea or Express


Plastic bag+carton+pallets


Full payment for samples order.30%deposit for bulk orders and balance paid before shipment.


1. By FedEx /DHL /UPS /TNT /EMS door-to-door services.
2. By Air or by Sea for batch goods; for FCL.
3. Customers specifying freight forwarders or negotiable shipping methods are available.

Shenzhen HeatHardware Co., Ltd are screw manufacturer with over 20 years of specializing in custom fasteners for aerospace, automobile, electronics, electronic, Robot, Outdoor sports products, smart appliances, etc, our main products are stainless steel screws, brass screws, steel screw,sems screws, security screws, Torx screw, Micro screw, precision screw, nylon patch screw, self-tapping screw. plastic head screw.electronic screw, Chicago screw. bolt, nuts, and other fasteners, we can provide a one-stop fastener custom service for you.

Why Choice us
1. A full set of advanced equipment, assuring the product quality
-Automatic screw head and thread rolling machine
-Optical automatic screening machine
2. Finish surface treatment-ROHS Compliance
-Stringent salt spray testing and environmental testing, rust free
-Stainless steel salt spray test reaches 1000 hours
3. Systematic Quality Control,100% Optimal product
-Sclerometer+Salt Spray test machine+Dynamometer
-QC+Screening Machine+Optical detection machine
-ISO certificate
4. Mass Stock, The 24-hour delivery
-More than 10000 kinds of screws in stock
-Samples can be made and sent out within 24 hours
5. Custom-made service
-We bring your drawing design to reality
-100%non-defective and friendly environmentally compliant
-SGS, ISO 9001, ROHS, IATF 16949

Frequently Asked Questions

Q1: Are you a trading company or manufacturer?
A1: We are a factory.
Q2: Can I visit your factory?
A2: Yes! Warmly welcome to visit our factory. It would be great if you can inform us in advance.

Q3:The quality of your products?
The company has advanced production and testing equipment. Every product will be 100% inspected by our QC department before shipment.

Q4:How about your price?
A4:High quality products with reasonable prices. Please give me an inquiry, I will quote you a price for you to refer at once.

Q5:Could you provide free samples?
A5:We can provide free samples for standard fasteners, But the clients will pay the Express charges.

Q6: What’s your Delivery Time?
A: Standard parts: 7-15 days, Non-standard parts: 15-25days.We will make the delivery as soon as possible with guaranteed quality.

Q7: How should I order and make payment?
A7:By T/T, for samples 100% with the order; for production, 30% paid for deposit by T/T before production arrangement, the balance to be paid before shipment.

Are You Looking For Custom Screw Manufacturer?

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 need to tell us the following information:


Please tell us the specific details, like what is material and finish do you, and the fastener size, if you have drawings or pictures, please send them to us


Normally small order quantities are acceptable, while large quantities can help us to lower the cost and get you a more competitive price.


Tell us your application or detailed information for your projects. We can offer you the best choice, meanwhile, our engineers can give you more suggestions under your budget.

What 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

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.

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

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